BMW E90 Airbag light on, error 93C2 . Fault finding and repair.
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- เผยแพร่เมื่อ 17 ก.ค. 2024
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Hi
This car came to me with the airbag light on.
A quick scan, revealed the error 93C2, which is related to the passenger seat occupancy sensor...
Owner did not really wanted to replace the faulty sensor mat, and they are expensive, so I offered him a different solution, which obviously would leave the airbags system fully operational!
Follow me on this video to find out what was the problem and how to resolve it.
Hope you enjoy the video.
Any questions or comments put them below.
Like always, thank you for watching! - ยานยนต์และพาหนะ
I am not a saint but I will never risk my business for a 300 Euro part . I am not against that what you did but in my case , even if the client signs a contract that he orders me to bypass airbag components , it is against the law . Signed documents or not . I have witnessed a very dirty play which I am not going to write down but in the end the liability insurance paid X amount of Euro´s and the garage lost it´s license . I do understand your repair will work but in my case , no flash , rewrite or tampering .
Totally agree...
And to be fair, even this morning before I release the video, I was wondering about it...
I have strict much more since this was recorded... And I am no longer doing anything like this... as you said, new part whatever it costs...
I know however, if I haven't done it, someone else would... and from what I have seen, good knows what would be done... at least I know the airbags will still deploy...
but I guess that it would be on their shoulders not mine... lol
Thanks for watching and for your comment!
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@@LMAutoRepairs Yah I wouldn't mind unless someone did like my brother's mechanic did he just cut the side driver seat bag and said it will turn the light off instead of actually replacing the driver occupation sencor and charged him 200 for it even though on Peugeot it's the connectors or modules that fail
Actually you are not causing any safety hazard by doing this. All that changes is that the passenger airbag will deploy no matter if someone is sitting in the front passenger seat or not.
Hei Luis. Im your subscriber for quite a long time. Every day your videos are helping mechanics and electritians around the globe. Respect 👍
My question is how do you know witch resistors are going were to bypass this?
You simply are a magician. 👍
Best regards 🤜🤛
Great video 👍 You made the right decision on the locking wheel issue as if you damage the wheel your the one to repair, I've been there!
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Indeed...
Thank you for watching and for your comment!
Had to install an emulator on my E91 a couple of years ago. Unfortunately, the seat mats are yet another common failure on these cars, just like the door locks.
As always, nice educational video!
Cheers mate
Very true...
Thank you for watching!
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Very good job 👍. I love the new video cutting effect. 😉
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Thanks!
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Thank you for another great video!!!
Thanks!
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Excellent information 👍
Thanks!
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How I repaired this fault.
Bought contact spray (for electrical and electronic connections), then took the seats out and cleaned the both connectors from the car and from the seat.
Just take all the pins out, one by one, and spray them with contact spray, then brush it well and wipe it them with a towel.
I had to drive 5 minutes then stop, then start again the car after 10 minutes, to see the fault gone.
Hope this helps anyone !!
Could you please share the video of the wiring diagram ? Having same problem
Great thanks to you.
It works.
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How do i go about if my OCS sensor has many traces going from the mat to the little box instead of 4? There is 17 or 18 active traces. Its from a 2007 e92
I think it's a fair repair to do mate. The system is 13yrs old and if this keeps it going and the customer is happy with it, then good
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Hi there I have the same problem. I’ve got the mat out and doing the same as you have. I’m just confused on your diagram and the resistors to use. I've got 2 k resistors and 1 k resistors so am I just best to use all 2K can you explain more on the diagram it looks like they all join in together with resistors which confuses me
In the video, it isn't entirely clear where the resistors are connected. I tried googling but the only diagrams I found were for E46 and older, which use a different type of seat sensor. Could you provide either a link or a wiring diagram showing the resistor layout relative to signal, power, and ground?
In some cars like vw you have key to disable passenger airbag when you have kid in "special backward seat"
the front seat. How abaut seat occupancy sensor in bmw? its not for same reason? If this the case its not very good to disable this system
good evening LUIS MASTER,HOW R U, I HAVE AN QUESTION PLZ,THERE are 4 resistors[2x1kilo ohm] and 2x 2.7ohm or kilo ohm,thanks
I like your approach, i also prefer to avoid emulator, if it is possible. But it is important to tell the customer to always use seatbelt on the passenger side after this mod. Airbag will now deploy also if seatbelt is not inserted, and this could be fatal even in a low speed crash
Seat belts are mandatory independent of the speed you are driving... so... 😊
But I know what you mean...
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@@LMAutoRepairs Here in italy most of the people don't use seatbelts, so when i work on an airbag it is my concern to explain customers the importance of using it. I hope you are more conscientious in U.K. about using it! 😁😁😁
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Hi mates. I had done the same procedure on my e46. If job done properly than NO risk. Air bags will do the job.
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Hello can you tell me a code of daiod or wich sizes !! Thank you
So Nice
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Thanks!
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Emulator will do the same thing. I have one in stock but I will not install them any more. It is to risky. Buy a part or go elsewhere. If you can not buy a part for your car, you can not afford it. Buy a clio or something you can mantain. Thank you for the video Luis. This "repair" is definitly cheeper then buying an emulator. 👍
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Agree...
Thank you for watching and for your comment!
Is the seatbelt light not on ?
Good job, but it is easier do unplug sensor and code out it with ncs
I have this problem too but There’s a problem connecting to the ecu
Boa tarde
São 2 resistor 2k
E 2 resistor 1k ?
Hello
How do you check the power and grounds
Is not danferous to use multimeter to Airbag cables?
If it is supposed to have voltage in there, there is nothing wrong with measuring it... in the rights pins...
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It works with coding,but the parameters that need to be coded differ as the 2008 and up models have a different version of the airbag module.
I know...
Either way wouldn't work...
Wouldn't matter which parameters I tried...
Or I missed something...😋
Thank you for watching!
@@LMAutoRepairs my MS906bt is not able to code any configuration related to airbag on e90s but ncs expert is an excellent tool for such a job and you can get it much cheaper. Using it is a bit tricky I use it very rarely and hate it every time :) but its a lovely tool.
after you do the mod will the airbag light go away or will you need to clear the codes. I don’t have obd scanner
Need clear codes if I recall correctly...
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Didn't even think BMW sold vehicles without A/C on the E90! You ever replaced the LCD on the e90 radio... it's the next thing to do on my long list of repairs🙄
Hi
No... never did that... buy seen them damaged...
Thank you for watching and for your comment!
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It has ac, but it’s manual, not auto. What a base model 😂 not even steering wheel buttons
@@Syntappi Really haha even corollas have them
Love your video but can I ask why u didn't buy a new sensor
I would have... but the the owner...💸
To be fair, next time I have this situation, I will only do it if I replace the sensor...
Did this one for educational purposes only...😊
Thank you for watching and for your comment!
I have the exact same problem on my bmw 1 series e81 2007. Passenger seat occupancy sensor pops up on the autel. I have tried an emulator but no luck! On live data it state the passenger seat occupancy sensor is deactivated. I think somebody's tried to code it out and failed. What are my options 🤔🤔🤔
The code has not been done correctly...
But, my advice is a new matt sensor...😊
@@LMAutoRepairs Thanks for the reply I totally agree 👍 The coding will still have to be sorted. What's the best way to code the module ISTA 🤔
@sidsyd123
Or any other capable tool...
NCS Expert should work for that car...
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Perfect thank you 👍
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This system seems like a 4 wire strain gauge. If this is the case the system weights the passenger.
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Gerekli Malzemeleri bana yazar mısın ?
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I like your videos. You have a great knowledge and your videos helpa lot. But I think this solution is a piece of sh*t. For me it doesn't matter if it works or not. Safety equipment is something that never mess with up. If costumer hasn't got enough money then he should sell his car or buy a bycicle. I never do something like that doesn't matter what customer sasy or what happens
imagine ending up in a jail cell for manslaughter, not the best idea this video
Why do you say that?
The airbags will just work as normal in case of an accident...
Better than the ones I get sometimes with the light covered/tapped...😊
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@@LMAutoRepairs god forbid something were to happen , but if it did you are liable because of this fix, and its all on vid for the court. dont put yourself in this position
In jail 🤣🤣🤣🤣🤣
@@geoffreyrawlingd2430 bit slow there mate
if it is possible to reset it with car diagnostics, autocom greetings