DIY rear window heating repair vaz 2109

In detail: do-it-yourself repair of the heated rear window of a VAZ 2109 from a real master for the site my.housecope.com.

The rear window heating element is switched on with relay 113.3747. At the same time, the control lamp 5, which is located next to the switch, comes on. It illuminates the switch key with orange light. Only when the ignition is on can the rear window heating be turned on, because voltage is supplied to the switch through an additional relay, which is triggered when the ignition is turned on.

A fuse directly connected to the power supply supplies power to the heating element through the relay contacts. If when the heated rear window of the VAZ 2109 is turned on and the glass is not heated, then the fuse, wires and connections, switch, relay should be checked.

If the heating element fails, it is advisable to replace the glass, however, it is much more convenient to purchase a kit for restoring damaged threads.

Heated rear window vaz 2109 defrosts the rear window. Consists of parallel conductors deposited on glass. Electric current is passed through them, the conductors heat up and defrost the rear window, also removing moisture from it. Power is supplied from a relay located in the engine compartment fuse box. If after fifteen minutes the glass still has not cleared, then you need to turn on the heater for the second cycle.

To do this, wrap the voltmeter probe with aluminum foil and press the foil with your finger and move it along the conductive threads. This way you can find where the threads are broken.

Initially, the volmeter will show a voltage of 6V. If it displays 12 V, then there is a break in the thread at this point on the side between the connection point of the volmeter and the side of the heater. If the voltage is below 0 V, then the conductive strip has an open circuit on the side between the connection point of the volt meter and the side of the heater.

Video (click to play).

Ohmmeter it is recommended to measure the resistance of the conductive strip between the side terminal of the heater and the center of the strip. The split section of the strip will have twice the resistance of the rest of the strips.

You can repair the conductive strip using a conductive compound: glue mixed with metal shavings, a special material. You will also need electrical tape, solvent, brush. Use a solvent to clean the area of the glass where the conductive strip of the heater breaks. Insulating tape will be required as a stencil. Apply conductive compound, remove the adhesive tape. After a day, you can remove the excess.

> Heated rear window is a very useful thing - it protects the rear window from fogging and icing. However, very often it either does not work at all, or only part of the tracks works. I think that many owners of the VAZ 2109, when reversing, look at the road through the rear window. At least that's how I myself - it's very convenient. If this glass is fogged up or covered with snow, then nothing will be visible. And driving on mirrors, especially when used to driving looking through the rear window, is very inconvenient, and even scary. And driving safety is important. It’s not very pleasant to go in reverse on the mirrors and guess whether you hit someone or not.

Rear window heating VAZ 2109 does not work

The principle of operation of heating the rear window of a VAZ 2109 car is as follows: a conductive mesh is applied to the rear window from the inside of the passenger compartment. An electric current flowing through this mesh causes it to heat up, as a result, the rear window of the car is heated as well. The heating is turned on by pressing a button on the VAZ 2109 instrument panel.
If the heating of the VAZ 2109 does not work at all, then it is necessary to look for the reason why the voltage is not supplied to the rear window mesh. It is simple to check the presence of voltage for heating the rear window of the VAZ 2109: fold back the two wires brought up for heating and measure the voltage between them using a multimeter.

We measure the voltage of heating the rear window VAZ 2109

Naturally, before that, do not forget to press the button for turning on the heating on the instrument panel.

Turning on the heating of the rear window VAZ 2109

If there is no voltage, then it is necessary to check the heating switch-on relay in the mounting block, the heating switch-on button, the condition of the tracks in the mounting block, the integrity of the fuse, as well as the integrity of the wires to the rear window. If the voltage for heating comes, but the glass still freezes, then only part of the tracks is working, or maybe none of them works at all. To find out which tracks are working and which are not, you need to turn on the heating when the rear window is slightly fogged up. Evaporation will disappear around the tracks that work. We memorize these tracks, or mark them somewhere so as not to forget. The rest of the paths around which the vapors did not dry out are faulty. There is only one fault in the more expensive rear window heating - they are torn. The break in the track can be spontaneous over time, and the track can also be scratched if something is sharp or hard
rub on the rear window from the passenger compartment. A broken track can be detected by a close examination of each track of the heated rear window separately.

Breakage of heating threads VAZ 2109

Heating repair will consist in the restoration of damaged tracks. That is, it is necessary to eliminate the open circuit and ensure the flow of electric current along all tracks on the rear window.

A special conductive adhesive is on sale, which is perfect for such purposes. It is used as follows: glue adhesive tape on both sides of the gap in the track so that the gap between them is not thinner than the track.

Broken thread. Interior view of the salon VAZ 2109

Then we apply a thin layer of conductive glue at the break, connecting the track without waiting for the glue to dry, remove the adhesive tape from the rear window.
Remember that if a lane still doesn't work after applying conductive glue, then there is another gap somewhere along that lane.

In such a simple and understandable way, you can restore the heating of the rear glass. Now, whether in snow or rain, the rear window will be clear and clear, providing the driver with excellent visibility.

Heated rear window VAZ 2109 restored

If you live somewhere in the wilderness and no one in your area has heard of conductive glue, then there are quite a few options for restoring heated rear glass: from homemade adhesives with copper sawdust and graphite, and ending with fans for blowing the rear window. You can search the Internet and find what is right for you.

If one of the threads responsible for heating the rear window stops working, it doesn't matter. There is an easy way to fix this situation.

You will need sulfuric acid and copper sulfate (copper sulfate). The former can be purchased at the car market, the latter at a store that sells fertilizers for flowers.

First of all, you will need to make a kind of "brush". In the center of it there will be a piece of copper tube or wire, which must be wrapped around the edge with a strip of fabric. Outside, the fabric is fixed with a bandage of several turns of thread.

To prepare a solution to restore the heating thread, stir two teaspoons of copper sulfate in 100 ml of water. Add about half a teaspoon of battery electrolyte (diluted sulfuric acid) to this solution.

Now connect both terminals of the glass to the "mass", and to the copper brush - "+" of the battery.Soak a brush in the prepared solution and gently wipe the place where the heating thread is broken.

The principle of this method is simple. When the current is connected, electrolytic dissociation occurs and copper ions are deposited at the point where the thread is broken. A few minutes are enough for the damaged area to be completely "tightened" with metal.

Be careful when handling sulfuric acid. Even when diluted to 40% (the usual concentration for winter electrolyte), it can burn skin and damage clothing.

Rear window heating is a very useful thing - it protects the rear window from fogging and icing. However, very often it either does not work at all, or only part of the tracks works. I think that many owners of the VAZ 2109, when reversing, look at the road through the rear window. At least that's how I myself - it's very convenient. If this glass is fogged up or covered with snow, then nothing will be visible. And driving on mirrors, especially when used to driving looking through the rear window, is very inconvenient and scary. And driving safety is important. It’s not very pleasant to go in reverse on the mirrors and guess whether you will hit someone or not.

Rear window heating VAZ 2109 does not work

The principle of operation of heating the rear window of a VAZ 2109 car is as follows: a conductive mesh is applied to the rear window from the inside of the passenger compartment. An electric current flowing through this mesh causes it to heat up, as a result, the rear window of the car also heats up. The heating is turned on by pressing a button on the VAZ 2109 instrument panel.
If the heating of the VAZ 2109 does not work at all, then it is necessary to look for the reason why the voltage is not supplied to the rear window mesh. It is simple to check the presence of voltage for heating the rear window of the VAZ 2109: fold back the two wires brought up for heating and measure the voltage between them using a multimeter.

We measure the voltage of heating the rear window VAZ 2109

Naturally, before that, do not forget to press the button for turning on the heating on the instrument panel.

Turning on the heating of the rear window VAZ 2109

Breakage of heating threads VAZ 2109

Heating repair will consist in the restoration of damaged tracks. That is, it is necessary to eliminate the open circuit and ensure the flow of electric current along all tracks on the rear window.

Broken thread. Interior view of the salon VAZ 2109

Heated rear window VAZ 2109 restored

Image - DIY repair of heating the rear window of a VAZ 2109

Power to the heating element is supplied through the contacts of relay 2 from the P4 fuse, which is directly connected to the power source.
If, when the heating is turned on, the rear window does not heat up, it is necessary to check the P4 fuse, wires and their connections, as well as the switch and relay 2.

USEFUL ADVICE
If the rear window heating element fails, the manufacturer recommends replacing the glass, but now there are special kits on sale for restoring damaged heating element threads, including all the necessary components, tools and instructions for use.

Rice. 9.24. Diagram of the rear window heating system on a VAZ 2108, VAZ 2109, VAZ 21099 car:
1 - mounting block; 2 - relay for turning on the rear window heating; 3 - ignition lock; 4 - rear window heating switch;
5 - control lamp for turning on the rear window heating; 6 - rear window heating element

GIVEN:
Vaz 2109
Installed heated rear window
Glass
Electricity
... I am stupid and dull. (Self-criticism is the key to success.) Search, of course, rules, but such questions are not enough for a campaign.
The previous owner of something muddied with a replacement, but said that something was non-standard. When buying, I did not pay attention to what I regret.

Heating works, BUT
Of all the strips, only 1 is heated WELL, all the rest are barely a soul in the body. we can say almost nothing flows through them, tk. even light ice is not able to warm up, but they have signs of heating.

1) If everything works and the current still flows - are those barely living threads going to burn out or insufficient voltage is given there?
2) When turned on, what voltage is supplied there? 12 Volts?
3) Is it possible to throw wires directly and check if everything will be plowed directly from the battery?

Your opinion is also interested. and then it is ssykatno to ride with 1 thread and then almost at the very top. despite all that the stele is something like a new one.

tell me! on Kalina began to close, the battery is dead! the service identified the rear window heating circuit, disconnected it! how to be change glass?

change the heating, it's for sale, you'll stick a new one

Rear window heating is a useful and very convenient option that avoids fogging and freezing of the rear window and at the same time provides excellent visibility at any time of the year.

Rear window heating saves not only in winter, but also in autumn, when the humidity rises and all the windows in the cabin begin to fog up. In just a few minutes, heated rear window melts ice and light snow, and also dries up condensation that accumulates on the windows in wet weather.

All this is good, but what to do when nothing happens when you press the button, in other words, what if the rear window defroster does not work? This is exactly what we will try to figure out today. You will learn how the heating works, why it fails, as well as how to find a malfunction and repair the heated rear window of a VAZ.

The principle of heating is as follows. A voltage is applied to a conductive thread, called a heating element, as a result of which the thread heats up, thereby melting snow and drying moisture.The heating system consists of a network of conductive threads, several fuses and a button. When the driver turns on the heated rear window, a warning lamp on the panel lights up, and one of the relay contacts is energized. The second contact is connected to the car body, which is "minus". Thus, current is circulated through the heating system.

Circuit breakers. If the heating does not work completely, then most likely the fuse has blown, which should be replaced.
Break. It also often happens that the conductive filaments burn out or break, as a result of which the current does not flow beyond the break. Thread breakage can occur due to chafing or breakage, for example, during inaccurate repairs.
Bad button or relay. In the event of a malfunction in the rear window heating switch or relay, the current will not flow.
Contacts. Oxidation, disruption or deterioration of contacts leads to an unstable supply of current and, as a result, poor heating of the threads.

The search consists in locating the break in the circuit. We check the relays and fuses (F8 (20A) and F8 (20A) mounting block), as well as the button, if everything is in order, then you should look for breaks in the filament. To do this, we first make a visual inspection. We turn on the heating and observe where the threads are heating up and where they are not.

If a visual search does not return any results, you can use a voltmeter or multimeter. To search for a break with a voltmeter, turn on the ignition and heating, then connect one probe of the device to the mass of the machine, and wrap the other in foil and move it to the middle of the conductive thread. In this case, the device should show the result in the range of 5 V. At the point where the device shows 0 V or, conversely, it rises more than 10 V - it can be assumed that there is a break in this place.

If the rear window heating does not work, then a voltmeter will help to find the break. The device is connected to the positive heating terminal, and the second probe is smoothly moved along the filament only from the negative terminal side. At the point where the voltage drops to 0 V, there will most likely be an open circuit. It is here that glass heating repairs will be required.

There are many options for repairing threads, one of which is a repair set of threads for heating the rear window. On the market this category is represented by: Permatex and Quick. Such repair kits allow you to effectively repair large areas of breaks, up to ten centimeters. The set consists of stencils, a can of polymer resin, and the actual heating threads themselves. The repair is carried out as follows: we find the damaged area, prepare the necessary piece of thread, remove the protective film and glue the thread to the area using polymer resin. When everything is dry, the procedure can be repeated. After 1-2 days, turn on the heating and check the result.

The second way to fix the rear window heating filaments is to use a conductive paste, such as "Kontaktol". A special paste or glue that is capable of conducting current is applied in a thin, neat layer to the damaged area. For a more accurate application of the paste, the work area can be pasted over with tape. The paste dries for about a day, but if you have an effective heat source such as a hair dryer or a special heater, the drying time can be significantly reduced.
There are also alternative “handicraft” methods for repairing heated rear windows. So some people use paint to which they add copper-brass shavings. The paint is matched to the color of the threads, and the shavings are extracted by shaving the material. You can use glue instead of paint. Alternatively, you can try to connect the break points with a soldering iron. I want to note that in this case the result will be, but it will not look very aesthetically pleasing.

I will end on this.I hope you now know what a heated rear window is, how to find its malfunction, and how to repair a heated glass in different ways. That's all for me, thanks for reading to the end. I would be grateful if you share this article on social networks, this will help us in the development of this project. In addition, more people will learn about our existence. Also, do not forget to leave your comments and supplement this article with your advice. All good and see you again at the VAZ Repair.

Almost all VAZ models have rear window heating, which greatly facilitates driving in special conditions. Most often, heating is needed in bad, cloudy weather, when the rear window fogs up from condensation, as well as in winter, when the glass is covered with icing.

The operating principle of the heater is quite simple:

a conductive thread of a certain resistance is applied to the rear window, which heats up from the passage of current through it;
the supply voltage is provided by the following components: wiring, relay, fuse and power button;

This scheme is used on all VAZ cars (as well as on most foreign cars), starting with the "classics" and ending with the latest models.

4 - power button (backlit);

5 - signal lamp on the instrument panel;

6 - heating thread (element) of the rear window;

The inoperability of the rear window heater is detected immediately, during the working heating, the fogged glass, literally in the first minutes after switching on, begins to clear up. If the heating does not work, this does not happen, and the glass remains fogged up.

A diagram of the rear window heating system on a VAZ 2108, VAZ 2109, VAZ 21099 car is shown in Fig. 9.24.

The rear window heating element is switched on by means of a relay type 113.3747 installed in the mounting block. When a VAZ 2108, VAZ 2109, VAZ 21099 rear window heating is switched on on the car, the control lamp 5 lights up (see Fig. 9.24), located next to the switch and illuminating the switch button with orange light. The heated rear window can only be turned on when the ignition is on, since voltage is supplied to switch 4 through an additional relay 2, which is triggered when the ignition is turned on.

Power to the heating element is supplied through the contacts of relay 2 from the P4 fuse, which is directly connected to the power source.

If, when the heating is turned on, the rear window does not heat up, it is necessary to check the P4 fuse, wires and their connections, as well as the switch and relay 2.

Rice. 9.24. Diagram of the rear window heating system on a VAZ 2108, VAZ 2109, VAZ 21099 car:

1 - mounting block; 2 - relay for turning on the rear window heating; 3 - ignition lock; 4 - rear window heating switch; 5 - control lamp for turning on the rear window heating; 6 - rear window heating element.

In cold weather or just in rainy weather, when you turn on the heated rear window, you may find that it simply does not work - either completely, the fogging does not go away, or one or more threads do not heat. Thus, the view from the rear window is reduced - which can negatively affect driving safety! It needs to be restored. BUT how, what to do? It turns out everything is quite simple, we read ...

THE CONTENT OF THE ARTICLE

Actually, the reason is well-known to everyone for a long time, on our VAZ, these threads are constantly "burning", and rolled with 1 - 2 - 3 threads that did not heat, terribly inconvenient! But now it turns out for a long time there are tools and repair kits that allow you to restore the whole thing, and quite effectively.

It's just that wires fit to the rear window, with a voltage of 12 volts. On the surface on the sides there are special tracks, into which these wires are embedded. The tracks run vertically upward, so to speak, the "main bus", there are only two of them on the right and left, at the extreme points.

And now from them go, thin (2 - 3 mm), horizontal stripes that heat the glass itself, clearing it from fogging, or from snow in winter. It is they who are the main working element of the entire structure.

Usually there are several dozen of them, about 20 - 40 in the working area, it all depends on the class of the car and the size of its rear window.

Of course, any electrical device is controlled by a fuse that is designed for a certain voltage and amperage.

Actually, there are only two main reasons, and both of them lie in the power system:

Fuse. YES it can really burn out. This happens due to various reasons, maybe not a big closure banally and that's it. Thus, the heating will not work completely for you. Need to find fuse and check it... This is the first and required step.

If it is intact, then we need to check the voltage on the wires that fit the main "tires" (side wide stripes). They usually have regular metal contacts. We just take a multimeter and measure it, if there is a voltage and it is about 12 volts, then the power is suitable here, everything is in order.
The thin lines themselves. To be honest, they cannot all burn out at once. As a rule, from one to three, well, a maximum of four "threads" burn out. Therefore, if you have part of the window moving away (from fogging or ice), and part of it is not. It is necessary to look at the non-working threads.

Examine this thin strip and you will see the clipping point. This will be a burnt-out part, there may be a little black color near it (although the thread is initially brown). Also, the thread will, as it were, open, this place needs to be connected in order to restore working capacity.

On my own I want to add, the fuse rarely burns, basically it is a break in the glass "threads" and they need to be restored.

I remember the distant days when it was practically impossible! Now what technology has come to - you can buy a rear window repair kit, specifically to restore these narrow strips. I suspect that there is some kind of metallized composition, or paint - but it is called conductive glue.

Such glue can withstand temperatures from - 60 to + 100 degrees Celsius. This is what we need to buy. The only thing I want to tell you - do not take the cheapest composition, now in my opinion it is about 150 - 200 rubles, take a little more expensive about 300 - 400 rubles, such compositions work much longer.

Now the actual instructions for recovery:

To begin with, you need a little, I repeat a little - to clean the edges of the strip at the break points. It is necessary to remove carbon deposits and other deposits that form on the glass. For this, sandpaper "zero" is ideal, just a couple of movements and you're done.
Wipe with alcohol, remove all plaque.
Now we take the scotch tape, and glue the strips on the sides, in its thickness. The scotch tape should not cover the strip, but it should not move away from it for a large distance precisely along the width of the thread, so that there are no gaps.
Then we take our composition, "conductive glue". He either has a syringe or a special brush. We begin to paint over the place that we have prepared. How many layers to apply will be written in the instructions. So it is worth noting that you need to go to the working areas of the strip 1 centimeter to the right and left.

Now we need the composition to dry. Take off the tape and wait. Usually about 24 hours is sufficient. BUT NOT BEFORE! After that, we turn on and check the performance, everything should work.

That's all, such a simple instruction. Now we are watching the video version.

There are such malfunctions in the car in which you can drive as before, but they constantly bother you, cause unpleasant feelings.Such malfunctions include the failure of the glass heating circuit at the rear of the car.

Usually, this electrical circuit is always amenable to repair. And there are troubles with these threads for the following reasons:

crack in the window;
failure of contacts;
open circuit;
natural wear and tear of a part of the track on the window;
mechanical scratching of the track.

The most common thread break occurs on the window. Sometimes it can be determined visually, but more often with the help of an instrument. Next, we will figure out how to diagnose, and how to repair the heated rear window.

We will analyze the step-by-step process of repairing the heated rear window when the thread breaks with our own hands. Useful for us:

electrical tester;
conductive adhesive used for glass repair;
tin foil;
Scotch;
thinner, clean cloth.

Read also about the ban on tuning SUVs and replacing the parking brake cable VAZ 2114.

You can buy special glue for repairing heated rear window at a regular auto shop. We start repairing damaged heating threads by turning on this system with a button in the cabin.

First of all, we determine the place of the gap. To do this, turn on the tester in the voltmeter mode and, applying the foil to the thread on the window, check the thread through the foil with a probe, moving from the positive contact. In this case, we apply another probe to the negative contact of the heater.
At the break point, the voltage will jump from zero to several volts.
Next, wipe the gap with a solvent.
We glue the tape on the top and bottom of the thread, leaving a distance for the thickness of the thread.
We apply conductive glue for repairing heating threads with a syringe or brush. It all depends on what is offered in the set with glue. In addition to the empty space in the gap, we coat about another centimeter of each end of the whole thread.
We remove the scotch tape. We wait about 24 hours until the glue is completely dry.
We remove the excess, wipe the place of repair.

This is how the damaged threads of heating the rear window are repaired with their own hands. It is clear that you will have to buy a set with glue beforehand.

Now let's talk about how to repair broken rear window heating contacts. To do this, you must first understand the principle of building this electrical circuit.

It turns on only when the ignition is on, an additional relay is responsible for this. It supplies power to the system button. When the button is on, the lamp lights up in parallel and the switching relay, powered by the fuse, is activated. Then the voltage is supplied to the heating threads.Repair of glass heating contacts consists in restoring their performance. To repair any faulty rear window heating terminal, we need:

multimeter;

screwdriver;

soldering iron, solder, rosin.

All the manipulations described below are available on the Internet as a video with the title: "DIY glass heating repair." We will write further in words. So the actions are like this.

We check all the elements of the circuit to find the location of the malfunction. First, we look at the fuse.
Next, we check the serviceability of the button by measuring the contacts with a multimeter when it is turned on.
We check the relay, when it is triggered, the corresponding contacts should give out a voltage of 12 V.
We measure the voltage of the connector at the rear window.
We check all the wires going from the button and relay to the heating track system, see what the state of the insulation is, if there is a short circuit to the car body.
We restore the faulty place by replacing the terminal, additional insulation or soldering the contact.

This is how the contacts for heating the rear window of the car are repaired. If the open circuit is on the threads, then we find a specific place according to the algorithm already described above with the help of a tester. Further, in the absence of purchased glue, you can fix the thread break like this.

brass or copper bar;
file;
red paint;
Scotch.

Then we do this.

Use a file to prepare brass or copper shavings.
Mix the paint with shavings in a 1/1 ratio.
We turn on the heating.
We glue the adhesive tape on top and bottom of the faulty area, leaving a distance commensurate with the thickness of the thread. We clean this area.
We apply a composition of paint and shavings.
We wait for drying for a few minutes. We remove the scotch tape.

Here is such an interesting technology. There is another option for restoring the lost section of the heating track in the absence of special glue. Let's consider it on the example of a specific car.

To repair the heated glass behind Renault Logan, we need to use the following accessories:

copper sulfate (purchased at a fertilizer store);
battery electrolyte (sold in any auto shop);
a piece of copper bar with a diameter of about 6 mm;
a piece of regular cloth.

This method is called electrolytic. You need to make the following manipulations.

Wrap the end of the bar with a piece of fabric so that the tip hangs down slightly, and, moreover, fix it so that it does not fall off.
You can prepare a solution for work in the following proportion: half a glass of water plus two teaspoons of copper sulfate, literally a hundredth of the electrolyte. Stir everything.
We connect a bar with a rag as an electrode to the positive terminal of the car battery. In this case, the contact of the thread on the glass with a minus of the chain must be serviceable.
We dip the resulting positive electrode into the solution and drive it along the lost area of the heating track. The copper from the solution should cover the entire area.

This method works well for all small scratches. In addition, it is not as difficult to perform as it might seem at first glance.

However, if you still do not want to do anything yourself, it is enough to contact a car service, where the entire electrical circuit will “ring” completely, quickly find the place of the defect and professionally fix it.

And what is the price for glass heating repair is spelled out in the following table. Here it is - with average data for large Russian cities.

With the onset of cold weather, when the ambient temperature drops below “0” degrees, it will be relevant to use the rear window heating function, which removes icing on the surface of the rear window of the car and thereby improves visibility through the rear-view mirror. Rear window heating consists of a special conductive track, which, during the operation of the car, can be destroyed, which leads to complete or partial failure of it. In the event that you find that the rear window heating of the VAZ does not work, it is not at all necessary to contact the service, because you can repair it yourself at home.

How to detect damage to the heated rear window of VAZ cars

If you find that the ice on the rear window does not melt or partially melts, then you need to restore those parts of the conductive track that have collapsed. To begin with, carry out a visual inspection of the rear window of the car to identify damage, if it was not possible to find them, you must resort to using a portable voltmeter.

Wrap the test leads of the device with tin foil so as not to damage the conductive tracks.

Turn on the ignition, then make sure that the heated glass button is on.
Now it is necessary to connect one contact to the positive part of the glass heating thread, and with the second probe we touch the middle of the track and take the measurement.
A 6V voltmeter reading indicates that no damage was found in this area.
A 12 V reading indicates that the damage is between the touch points of the middle of the filament and the plus point.

If the meter reads -10 V, then the damage is between the center and the negative terminal of the heated rear window. To more accurately determine the place of damage, connect one probe to the negative terminal, and move the second probe from the positive terminal to the negative side. An increase in voltage from 0V to 1 -5 volts indicates that there is damage to the rear window heating thread in this place.

To perform an independent repair of heating the rear window of a VAZ car, you need to purchase a repair kit. Before starting work, carefully read the instructions.

Instructions for restoring the thread of heating the rear window of the car

Thoroughly clean the damaged thread on the rear window with alcohol
On both sides of the thread, where a break is found, we glue the strips of adhesive tape end-to-end to the edges of the conductive track, so that there is no gap between them.
Now, using a brush or syringe (which are included in the kit), we apply glue, blocking the break and one centimeter to one side and the other from the place of damage.
Now it remains to remove the tape and wait until the glue is completely dry, this usually takes about 24 hours. After that, you can turn on the heated rear window and check its operation.

DIY rear window heating repair (Video)

Video (click to play).

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