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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > BMW Coding > DIY: Coding Seat Occupancy Sensor and Airbag light.



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      01-20-2014, 06:53 PM   #1
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DIY: Coding Seat Occupancy Sensor and Airbag light.

Had to get this done recently, and we had some difficulty finding the right options to code. Turns out there are two extra steps needed for newer cars.

Here are the steps:
Set the following to "nicht_aktiv".
SIDEBAG_LINKS_1
SIDEBAG_RECHTS_1
OC3_1

For newer cars (ie: E90 LCI)
The following needs to be "nicht_aktiv" as well.
AKS_LINKS_1_CD
AKS_RECHTS_1_CD.

We found the first three steps really easy, but the airbag light still wouldn't go off, im not sure many people are aware of the two extra steps for newer cars.

Cheers.
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      12-30-2015, 03:01 AM   #2
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I have a 07 E92 M3 and had my original Driver side seat change to bucket seat.... can I follow the same step to clear out the SRS warning light on my dash board? Thank you
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      12-30-2015, 03:06 PM   #3
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The last two steps must be for the Active headrest restraint system
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      12-31-2015, 05:29 PM   #4
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for the seat occupancy sensor, you do the following.

set oc3_1 to nicht_aktiv
Unplug the sensor (Really easy if you remove the seat)
Clear fault codes.

This is really common for sport seats, I've done this for tons of cars.
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      01-04-2016, 08:53 PM   #5
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I have two '08 335xi; the one I want to sell had sport seats, the one I am keeping did not. Therefore, I have swapped seats so that I have the sport seats (and sport steering wheel) in the car I am keeping.
However the sport seats have an airbag on the side and the basic seats do not.
Therefore the car that had the sport seats now wants to throw an airbag code; while I can clear it with Carly, it comes back after disconnecting the battery.

I am just becoming familiar with NCS Expert.

Does anyone know what codes to change to swap between sport seats (with side airbags) and basic seats (with no side airbag) ?

Thanks.
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      01-04-2016, 09:26 PM   #6
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Quote:
Originally Posted by mrvedit View Post
..........
Therefore the car that had the sport seats now wants to throw an airbag code; while I can clear it with Carly, it comes back after disconnecting the battery.

I am just becoming familiar with NCS Expert.

Does anyone know what codes to change to swap between sport seats (with side airbags) and basic seats (with no side airbag) ?

Thanks.
You can clear the SRS lights with Carly? May I ask which Carly tools you use?
Thank you
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      01-04-2016, 10:34 PM   #7
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Quote:
Originally Posted by testdriver View Post
You can clear the SRS lights with Carly? May I ask which Carly tools you use?
Thank you
I just have the latest Carly for Android and the Carly Bluetooth adapter. I think it is necessary to have the Carly adapter for full functionality.
I also suspect that many different airbag faults can enable the SRS light and that Carly cannot clear all of them.
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      01-05-2016, 05:50 AM   #8
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From my knowledge Carly will not clear the codes realted to sport seats. You need NCSEXPERT.
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      01-05-2016, 08:15 AM   #9
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Quote:
Originally Posted by cryptomit View Post
From my knowledge Carly will not clear the codes related to sport seats. You need NCSEXPERT.
Yes, of course; I implied that in my post.
Reading with NCSEXPERT my FSW_PSW_TRC has over 8000 codes - hoping someone knows which codes it is or even might be.

Tonight I will read the other car so that I can examine the code differences between the cars.

Or perhaps it will be better/easier to swap the relevant VO codes between the cars.

Update: Looks like swapping VO code $488 (Sport Seats and Steering wheel) might do the trick.
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Last edited by mrvedit; 01-05-2016 at 10:21 AM..
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      01-30-2016, 08:22 AM   #10
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Quote:
Originally Posted by mrvedit View Post
Yes, of course; I implied that in my post.
Reading with NCSEXPERT my FSW_PSW_TRC has over 8000 codes - hoping someone knows which codes it is or even might be.

Tonight I will read the other car so that I can examine the code differences between the cars.

Or perhaps it will be better/easier to swap the relevant VO codes between the cars.

Update: Looks like swapping VO code $488 (Sport Seats and Steering wheel) might do the trick.
Yes, You need to add the specific VO code for sport seats, then code corresponding modules with the EXPERT profile and it will update the values to what they are supposed to be, based on the new VO to the car.
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      01-31-2016, 08:43 AM   #11
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Quote:
Originally Posted by xxxjecxxx2 View Post
Yes, You need to add the specific VO code for sport seats, then code corresponding modules with the EXPERT profile and it will update the values to what they are supposed to be, based on the new VO to the car.
Oops, I should have updated my thread here as updating the VO codes for both cars and factory coding the related modules worked.
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      09-03-2019, 03:26 PM   #12
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OP's coding did not work on a 06 e90 for disabling the OC3 passenger mat seat sensor. Doing that gave me additional sidebag errors.

The post below from RogerOK did work for me.
https://www.e90post.com/forums/showt...=583819&page=4
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      09-03-2019, 03:34 PM   #13
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Quote:
Originally Posted by smallseafishie View Post
OP's coding did not work on a 06 e90 for disabling the OC3 passenger mat seat sensor. Doing that gave me additional sidebag errors.

The post below from RogerOK did work for me.
https://www.e90post.com/forums/showt...819&page=4
If you just have the seat mat sensor code then only disable oc3 in abg module. The side airbag one will trigger a fault if you disable it and it's working fine.
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      08-30-2023, 05:29 PM   #14
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Quote:
Originally Posted by CSM3 View Post
Had to get this done recently, and we had some difficulty finding the right options to code. Turns out there are two extra steps needed for newer cars.

Here are the steps:
Set the following to "nicht_aktiv".
SIDEBAG_LINKS_1
SIDEBAG_RECHTS_1
OC3_1

For newer cars (ie: E90 LCI)
The following needs to be "nicht_aktiv" as well.
AKS_LINKS_1_CD
AKS_RECHTS_1_CD.

We found the first three steps really easy, but the airbag light still wouldn't go off, im not sure many people are aware of the two extra steps for newer cars.

Cheers.
My daughter has a 2006 325i with passenger airbag and seatbelt lights on. I need to bypass them for her road test. The only other car she can test in is my 335i which she is not used to because it is a lot quicker.

I am not finding these codes in protool. What am I missing?
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      08-30-2023, 05:51 PM   #15
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Normally when people want to bypass the seat sensor failure they buy
a seat sensor bypass.

I had mine seat sensor replaced under recall.

Last edited by ctuna; 10-01-2023 at 07:25 PM..
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      08-30-2023, 06:01 PM   #16
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Quote:
Originally Posted by CSM3 View Post
Had to get this done recently, and we had some difficulty finding the right options to code. Turns out there are two extra steps needed for newer cars.

Here are the steps:
Set the following to "nicht_aktiv".
SIDEBAG_LINKS_1
SIDEBAG_RECHTS_1
OC3_1

For newer cars (ie: E90 LCI)
The following needs to be "nicht_aktiv" as well.
AKS_LINKS_1_CD
AKS_RECHTS_1_CD.

We found the first three steps really easy, but the airbag light still wouldn't go off, im not sure many people are aware of the two extra steps for newer cars.

Cheers.
I am not finding any of this in protool, any help?
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      08-30-2023, 06:03 PM   #17
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I don’t have time now.
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      09-24-2023, 11:50 AM   #18
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As OP mention + if not already shared by some1 you need to UNPLUG the seat occupancy sensor from underneath the seat for the airbag light to go out.
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      10-15-2023, 08:20 PM   #19
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Quote:
Originally Posted by xxxjecxxx2 View Post
for the seat occupancy sensor, you do the following.

set oc3_1 to nicht_aktiv
Unplug the sensor (Really easy if you remove the seat)
Clear fault codes.

This is really common for sport seats, I've done this for tons of cars.
Whenever I forget how to do seat mat coding (I do a lot of seats) I always search for this thread- for this very comment right here. Works without fail every time.
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