VIDEO
The electrical equipment of the car comfort system means a set of various devices, such as a single lock, remote control, exterior mirror adjustment, power windows, interior lighting, sliding roof panel control, anti-theft alarm, as well as seat and mirror memory.
The single lock is driven by an electric motor. It consists of one central control unit, two or four door controls, four door locks and motors and switches for the boot lid or tailgate locks. Other information regarding a single lock is given in the subsection Single Lock - General and Vacuum Hoses
Data exchange between control devices takes place via the so-called CAN-bus (via dial-up lines).CAN is an abbreviation for Controlled Area Network and means that control devices are connected to each other in one network. For example, a central control unit communicates with a door control unit via two wires. Without the CAN bus, communication would take place using 14 cables. As a result, the electronic system takes up little space and is lightweight.
The door control devices form a unit together with the power window motors. The unit controls the following power window functions:
- Automatic lifting and lowering of door glasses. ATTENTION
If the power supply to the door operating unit has been lost, for example by disconnecting the battery, the control unit must remember the end positions of the glass again. Otherwise, automatic operation of the window is impossible, see subsection Removal and installation of the storage battery
The door control unit also carries out the functions of controlling the adjustment of the exterior mirror and its heating.
The central control unit is located in the dashboard unit and performs the following functions:
- Locking the boot lid with a single lock.
The remote control has a range of about 7 m, under favorable conditions up to 10 m.
Data transmission from the transmitter on the key to the receiver in the vehicle is indicated optically by means of a LED on the key switch. Built-in rechargeable batteries provide approx. 5000 clicks.
If the LED does not light up when the switch is pressed, the batteries must be replaced.
Windows and sunroof sliding panel cannot be remotely closed.
The receiving antenna for the remote control is located in the A-pillar of the car on the driver's side. A-pillar is the first body pillar against which the driver's door rests.
The "open / close" command of the remote control is confirmed by the central control unit by a short flash. If a single lock is opened using the remote control and the door or tailgate / tailgate does not open, the vehicle will automatically lock again after 30 seconds.
When installed on a car Skoda Octavia A5, A7, Yeti, Superb abnormal xenon, after a while the comfort unit (on-board network control) fails BCM ... The unit requires replacement of a faulty key VNQ5E050MK or VND5E050AK for it to work correctly.
In blocks of comfort Skoda Fabia, Skoda Rapid of a new sample, there are often problems of inoperability of brake lights and external lighting in control units
6R0 937 087 AB, 6R0937087 AB, 6R0937087AB 6R0937087T, 6R0 937 087 T 6R0937087R 6R0937087S Symptoms BCM malfunction
The front left turn signal is constantly on.
There is no power to the washer motor.
Brake lights do not work
Recommendations for choosing a lamp in low beam, as well as a complete instruction with a photo report on replacing the H7 lamp
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It is described and demonstrated in the photo how to change the engine air filter on the Skoda Octavia A5
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Photo report on self-replacement
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Photo report on the replacement of bulbs in the hind feet. Everything is easier than it seems
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Self-replacement (photo report) of the front brake pads. Part numbers
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Self-replacement of rear disc brake pads, photo report on the work done.
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Self-replacement ATF in an automatic transmission (09G) Skoda Octavia A5. Description of actions.
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How do I get to the front gauges to change the bulbs? We look at the instructions!
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To replace the spark plugs on an Octavia with a bse engine, the intake manifold must be removed.
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We remove the side deflectors of the stove. Photo report on the work done. Be very careful when dismantling!
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in A5 fl, for example, one of the turns is permanently lit
Ukraine will be a bread and spiritual granary!
Disco in the salon
Nobody dies a virgin - life will fuck everybody
Post has been editedSergeyOz - Monday, 28 September 2013, 01:24
so can Vasya look at the mistakes?
Ukraine will be a bread and spiritual granary!
A possible cause is damage to the wiring harness at the transition from their door to the A-pillar.
Ulisss you callous man (c) Vlad777
So in the car, is the unit working?
Those. Does it perform all functions? Turns, dimensions, central locking, opening the trunk. ?
You can examine the harnesses carefully - and find how many twisted pairs come to the unit .. If I'm not mistaken, there is not one of them.
Well, they (CAN bus) stand out from the total mass of wires.
aurum , I don't have that car with harnesses on my desk
Found a datasheet for percents. KAN transceivers are mentioned. I understand.
The processor has several possible CAN outputs, only one pair has a TJA1053 transceiver + a ferrite filter and goes to the outside world.
So this mikruha that you replaced is called an intellectual key. Somehow I also repaired a similar block. As far as I remember, she has I2C, i.e. she is very good. associated with the proc. But I think it's not about her. I would ask the above-mentioned "service", what did they do there. Most likely your problem was formed through their fault, IMHO.
But it will be difficult for you without pinout. All the same, it would be necessary to dive into the car, and find the ill-fated twisted pair - so that you know where to start from
There was a car. The working block reads the same as the 09th Central electric channel. I checked against the block code.
But, as with one communication line, Maksidot sees the block, but there is no diagnostics ?! If the firmware flashed, then the encoding would fly off (the operation of the block would be disrupted) and Maksidot would not interrogate the block.
Stasjuk , All the same, it is not logical! After all, another block is being read!
Replacing the CAN bus transceiver solved the problem - the unit now works and is seen by diagnostics. I put TJA1054 (fully compatible with TJA1053).
Interesting observations:
They say that genon burns down the BC even when the lamp polling is disabled. It is logical that the cause is overshoots on the power supply or from high-voltage wires.
I can't enter the link, writes
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There are 2 of them on the board, one near connector A, the other near C. Which one is responsible for the right front one?
Repair of the electronic comfort unit Skoda Octavia A5.
Victor Victor 7 หลาย เดือน ก่อน
Thanks a lot! I have the same problem but the left turn signal, that is, from the driver's side, can you tell me which one I need to change? Thanks in advance!
+ Victor Victor I can’t tell you, I don’t know you need to call
Sergey Pidtilok 8 หลาย เดือน ก่อน
Thank you very much for the video. I soldered it myself, though I waited a long time for the microcircuit, everything is OK))) the turn works.
Magicmotorsport Russia 8 หลาย เดือน ก่อน
like there is mikruha here, my.housecope.com/wp-content/uploads/ext/448/product/vnq5e050mk/
Agafangel Odessa 9 หลาย เดือน ก่อน
Mad Max, are you geographically not in Kiev by any chance? Interested in the contacts of the masters who soldered the block to you. My octavia is 6 years old. Didn't see any xenon or towbar. One side of the turns just stopped working. The verdict of several masters, incl. officials, the controllers of the comfort block burned out, there is no impulse to one side. In short, a block for replacement. I would like to try to restore. New now 10-12 thousand UAH. I heard there are good masters at the Karavaevy Dachas in Kiev. I can't find their contacts. Can you tell me if you are from Kiev?
+ Agafangel Odessa no I am Kirovograd 0664268775 my number
Tell me where you can find a diagram of this block?
+ Max TV is probably nowhere, I have never met such schemes.
Alexander Zakorko 11 หลาย เดือน ก่อน
As far as I understand, these seven legs are responsible for the front and rear turn signals?
Alexander Zakorko ปี ที่ แล้ว
good day, tell me please, you are treating a right turn, that is (from right to left) a thick leg, this is food, then a small leg is an exit for a rear right turn, then a small leg of a front right turn, in general, the question is where is the leg of the left front turn, well, if of course you called. in appearance, of course, it is logical that the left leg is located after the large leg on the left side after all the legs of the right turn signal. Thank you
+ alexander zakharov good afternoon, one controller is the front side, the rear side is another controller, there are 4 controllers for all turn signals!
Hey! Please tell me, after you have drilled the board out of the block, how did you attach it back?
+ Osokin Denis I honestly don't remember.
+ Osokin Denis I honestly don't remember.
Sergey Pidtilok ปี ที่ แล้ว
Max please tell me where you ordered the controller. I have the same problem. It seems to me this is not because of xenon, I drove about 300tis with Chinese xenon. and recently the controller has burned down.
Alexey Kureichik ปี ที่ แล้ว
hi, can you tell me the reason for the audi a3 1.6 petrol, shkodavsky engine, changed the thermostat and coolant sensor. all the same, the temperature rises, I turn on the ignition to a cold one, the temperature on the dashboard immediately hits 80, you start driving, it falls, maybe this is also a comfort relay fooling your head
+ Alexey Kureichik can’t tell you why the problem is, but it’s definitely not a comfort unit, it’s not connected with engine control!
Everyone writes that it is burning from xenon. But I don’t understand why. After all, the halogen also does not lightly load the circuit and the resistance of a cold incandescent lamp is far from nominal. In addition, the microcircuit which is responsible for the rotation has struck. Please comment.
Alexander Maltsev 10 หลาย เดือน ก่อน
As they explained to me, xenon gives shitty impulses (interference)
Thank you. They reassured me a little. I kind of understand where it comes from and put the biliza half a year ago, so far everything is ok, but on the drive people are scared, they say, it will surely burn out, but they cannot explain why.
+ stas m and xenon is still working and even if henna, I still think the problem was in the installer!
Hello, can you contact a person who can make such a repair?
+ Taraska Volsky hello, where are you?
Alexey Timofeev ปี ที่ แล้ว
Have a look, please)))
Alexey Timofeev ปี ที่ แล้ว
+ Alexey Timofeev what is the power of the lamps?
Alexey Timofeev ปี ที่ แล้ว
hi author, and you do not know how the comfort unit will react to diodes.
Alexey Timofeev ปี ที่ แล้ว
Alexey Timofeev ปี ที่ แล้ว
hi max, the block will not burn.
Alexey Timofeev ปี ที่ แล้ว
hi max, won't the block burn?
+ Alexey Timofeev will complain
Alexander Sysoev ปี ที่ แล้ว
The left turn is on, which block is responsible for it? Does the neighboring one need to be re-soldered?
Dmitry Kuzmin ปี ที่ แล้ว
Respect to the author for the tip! The little thing is called VND5050AK-E, made by STMicroelectronics. In general, the entire Third Reich is shit! Why the heck was to put protection against the installation of xenon, if people still put it? And when you buy a car, you pay for this “care” about yourself.
I would not say that the protection worked, I repaired the unit after installing xenon, now the unit and xenon have been working for a long time!
Great Tsar ปี ที่ แล้ว
Exactly the same problem on the octave, can you tell me where you can order such a new spare part for soldering, or its designation for search?
So why did the comfort block get covered?
Pasha Bartosz is most likely due to the fact when the polarity is confused when connecting xenon
Repair of the Skoda comfort unit is a rather rare service that the SVS-Auto technical center provides to its customers. Nevertheless, some owners of cars of this brand still have to seek help from specialists to repair this unit. Let's figure out what it is. However, first, a few words about Skoda cars.
One of the main attributes of modern Skoda cars is the comfort unit, which is a decentralized electronic system called the Convenience Electronics System.
To understand what leads to the need for premature repair of the Skoda comfort unit, you need to figure out what this unit consists of and what it controls. So, the comfort unit installed on Skoda cars can control:
What can break down to require repair of the Skoda comfort unit? This system consists of electronic units for controlling each door, as well as a central control unit. The principle of operation of this system is very simple: after starting the engine, the control unit of each individual element creates a message, which records data about the operation of various systems, their states (whether they are in good order) and sets of control commands. Then, all modules and systems connected to the unit are interrogated in accordance with the established modes. The presence of an error is established in the absence of such a message.
It is clear that the repair of a Skoda comfort unit is a rather responsible and difficult task that requires certain knowledge, skills and experience. That is why only professionals should be trusted to carry out such work. SVS-Auto offers favorable conditions for the repair of the Skoda comfort unit, guaranteeing high quality of work and excellent results.
Repaired units are covered by a warranty!
We repair comfort units in our own workshop without intermediaries!
Our address: Moscow, Dorozhnaya st., 9 (metro Prazhskaya)
Phones: 8 (499) 394-64-06
When installing non-standard xenon on Skoda Octavia А5, А7, Yeti, Superb , the comfort unit may fail BCM . Skoda , In our repair center in half an hour, we always have all spare parts in stock.
Symptoms of a malfunction of the comfort unit:
The front left turn signal is constantly on.
There is no power to the washer motor.
Vryatli is a block of comfort. Most likely the wire is broken somewhere.
At first I lost the illumination of the mirror adjustment, and then the illumination of the central lock and the window regulator buttons. It was like that, that is, it will go out, the door will open, the door will go out, I will close it. When driving, that is, that is not.
(09/29/2010 19:49) sane4ek0063: The problem with the comfort block! When the ignition is turned off and the key is pulled out, the tape recorder does not go out! Dismantled, checked the magnetophone, everything is ok! When we climbed to the comfort block when wiggling the wires, everything starts to work. How does the comfort unit relate to the radio.
P.S. Damn, as you read the forum, because of the comfort, then the xenon does not shine, then the radio tape recorder does not work, then something else. We learned the name of one block and put forward diagnoses.
: How does the comfort unit relate to the radio.
P.S. Damn, as you read the forum, because of the comfort, then the xenon does not shine, then the radio tape recorder does not work, then something else. We learned the name of one block and put forward diagnoses. Gyyyy Max
(09/30/2010 10:21): (09/29/2010 19:49) sane4ek0063: Problem with the comfort block! When the ignition is turned off and the key is pulled out, the tape recorder does not go out! moving the wires, everything starts to work. How does the comfort unit relate to the radio.
P.S. Damn, as you read the forum, because of the comfort, then the xenon does not shine, then the radio tape recorder does not work, then something else. We learned the name of one block and put diagnoses forward.
ŠkodaMotorsport V / RS
(repairs after previous car services)
Imagine the situation: you have arrived in a foreign city in your car on business. We have done our work, gathered back. And here's the trouble - the engine stalls.And completely refuses to start. What to do? It's 700 kilometers to your city, it's a little expensive to drag a tow truck. And here there are no familiar workshops. And then the sad procession of services begins. The most honest immediately say: “we do not repair a diesel engine”. Those who are bolder will take money for reading mistakes, read them, throw up their hands and send them on. And the most hungry will go to repair. And this is the worst thing! No normal circuits, no correct diagnostic tool. Most importantly, getting into a modern car without experience is a risky business! But many repairmen are not at all embarrassed by this. I want to eat. There is no point in discussing the situation in the country, as a result of which the wrong people are in many places. And okay, if they start and the car will go. It remains to be seen how long such a repair will last and where this car will stop next time. Worse, when, after digging properly, and stirring up everything and everyone, they find nothing, and the car remains immobilized. They take the money (the work is done), and send the owner further through the services.
But that was a saying, and now there will be a fairy tale. Perhaps I am exaggerating, and everything was not so scary. But when this “Skoda Octavia Universal” was pushed to the diagnostic post, it was a pity for both - the car and the owner.
You can't look at the wiring of a car without tears.
And the owner no longer strongly believed that his fighting friend would come to life. Said only:
There was universal hopelessness in these words.
What we have? The dashboard turns on, there is ignition, but the starter does not turn. I connect the scanner and always the charger - let it wake up a little.
By errors, it can be seen that all the main blocks swear at the lack of communication with the engine control unit. It is absent even on the structural diagram of the device. There is nothing tricky here. If the unit does not respond, then there is either no power or problems with the CAN bus. Well, the worst case is “the block itself is down”, that is, an “internal defect”. It's a bit early until then, let's check the wiring for now. I open the diagrams, along the way I make sketches for memory.
So as not to get confused, I usually draw for myself a simple power circuit with relays, fuses and a CAN bus. It may not look like Feng Shui, but it is very informative for me. Already with this paper I go to the car and start checking all the key points that relate to nutrition. The fuses are intact, but the main relay, which is responsible for powering the engine block and its components, does not turn on, respectively, the block simply does not see the ignition on and does not wake up. Moreover, a plus comes to the main relay, but there is no control minus from the engine block.
Yes, such is the scheme, the unit itself must turn on its power. It's time to check him out.
And while I am taking apart a little part of the engine compartment, I see traces of interference from my predecessors everywhere. Well, commendable, it means I was not the only one to follow the trail. Inspires hope. But all hopes collapse with a bang when the control unit itself appears to my gaze.
Rather, what was left of him with such a rude and thoughtless treatment.
Honestly, I want to cry when you see such a barbaric attitude to technology. It seems that at the beginning of the article I was wrong, everything that came before us was even worse than I might have thought.
OPEN BLOCK. This is who had the brains to get into the brains.
I saw the blocks after chip tuning, sometimes there is a need to open the block, but competent people carefully close the block after all operations so that it looks better than the new one. And here is a dirty, ill-mannered intervention, either with a screwdriver, or with an ax (or with an ax and a crowbar).We tried to open it, it didn't work, they somehow shoved it back, and bye!
Even if the problem was not in the brain at all, now it is in the brain too. Congratulations, they wanted to cure - they killed to the end!
Okay, it's too early to panic, I promised to start it, we must use all the options. But the first point of our recommendation is now “replacing the engine control unit”. I’m sure there are competent specialists who dismantle and assemble such blocks of ten a day, they will say, what’s business there? But this question is not in my competence, according to our rules, there should only be a replacement of the block.
Okay, back to checking the power supply of the control unit directly on it. The mass is good, the main plus comes, but there is no plus from the ignition. It leaves the fuse box, but does not reach the engine block. It is not surprising that the unit does not turn on the main relay - it simply does not see the ignition. It is necessary to open the wiring. I get the go-ahead from the client (wearily waves his hand, they say “look what you want, we have already checked everything before you…)
And I am terrified. And here, in the wiring, the restless hands of the previous "diagnoses" have also visited.
How can a power cable with a cross section of 4 mm be simply coiled and dropped under the fuse box? Just wind up? No isolation? The further, the more terrifying. But the most interesting thing is that on the same positive ignition wire at a distance of half a meter, I found 7 (SEVEN). incisions. This is such a method for diagnosing wiring - cut the insulation to the current-carrying conductor and check - is there a positive plus?
This is the worst method, considering the constant fluctuations in humidity and temperature in the engine compartment. Living a wire after such a check is at best a year. But we must pay tribute, in some places the cuts were wound with electrical tape. Chickens laughing. I will not say anything, there are very, very rare cases when you need to divide the wiring section into two parts in order to clarify the place of the break. We do not have a special device for finding a cliff, although the thing is very useful. In this case, squeaking my heart, I just cut the wiring, find out in which part the breakage is and be sure to restore the wire in this place according to all standards.
I find a cliff. The funny thing is that my previous colleagues did not get to him literally a couple of centimeters, this can be seen from the unwound electrical tape. The break, or rather the oxidation, which led to the break, turned out to be in the place of one of the cuts in the insulation. How many more time bombs like this? We will not risk it, and therefore the second item in our recommendation is “replacing the engine compartment wiring harness”. I am temporarily twisting the wires, because there is no point in restoring it: seven breaks are waiting for it in the near future. Great, the main relay is activated, the engine block is communicating. But also not right away, I had to dance a little with a tambourine, as it turned out, the relay was confused before me, but these are trifles. The mood rises, the starter turns. But it doesn't turn on. What's on the scanner? After removing temporary errors, two remain, and both say - the control unit is faulty.
And what can you expect from open brains. The mood falls. On principle, I bring it to the end: I check revocable and a collection of solutions with similar symptoms. I can't believe my eyes - in case of such an error, the software of the control unit should be updated! Since you've sentenced him, why not give it a try? I connect to the portal, the update starts. I bite my nails hard for twenty minutes. Oh miracle, the update was successful! Now we still have a bunch of errors on the particulate filter, the recirculation system, but not a single one that the unit is faulty. Hooray! Triumphantly spinning with a starter. Aha, of course! Does not start.
It's time to drink tea. And think. Think well. Diesel won't start. What could be easier? Roughly - either there is no diesel fuel, or there is no air. I exclude the glow plugs - it's warm in the box. Let's check the measured values in the engine. And how much is the diesel fuel pressure in the rail? And here is zero! That is, there is no pressure. Yeah, hit the trail, tea clears the brains.Closely inspecting the high pressure rail and pipelines. Stop! And where did we get a puddle near the first cylinder? And it doesn't smell like oil at all.
And it was some clever man who had the quick wit to unscrew the high-pressure pipeline on the first nozzle! Bravo! On the engine, which even the starter does not turn, the fuel flow was checked. Okay, "I checked it, so twist it in place!" The ramp for all cylinders is common - this is Common Rail, and through one leak, all the pressure comes out. Twisting the pipeline. The engine starts half-kick. Smile from ear to ear. He promised - started.
Second act. We invite a client. I show everything that is heaped up to me. I explain that the engine is running, but you cannot drive like that. There are long tedious negotiations to do it somehow, but somehow I don’t do it ... it turns out that the engine was chipped at one time: the recirculation system and the particulate filter were removed. The further, the more terrifying. Now I can't delete errors on these systems - I've uploaded something new. As a result, we come to a consensus - I do what I find conscientiously, I do it so that the car is on the move, but there are no guarantees, especially considering the chip tuning. The client has nowhere to go, and he leaves the car overnight.
I will not tell you how many new wires and profanity were used during the repair process. Only time. Troubleshooting, starting the engine - 2 hours. Restoration of wiring and assembly to a decent condition - 6 hours. If this car had brought me to the first one, I think that in an hour at most the car would have left on its own. Now what to do with the open engine block, which stands under the windshield, where is the constant water? There is nothing better than a plastic bag!
He wiped away an avaricious tear when he was doing this "collective farm" with his own hand. I told the client that the very first thing he needed was to collect these brains from the chip makers. When I put everything in place, I read the rest of the mistakes. Everything is there - from burnt out light bulbs to worn out pads.
Video (click to play).
A pity, the car did not deserve such an attitude ... I think the brains will continue to ride in the package until they turn green.
