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Old 09-16-2019, 08:33 AM   #1
Vinc3
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NCS Expert - Writing To Airbag ECU (Code out Airbag Light)

Hi guys, can anyone please tell me how to write to the airbag ECU, (if possible) whilst using NCS Expert.

I need to code out the airbag light on the dashboard of my track car so that the car passes its MOT as I've removed all of the airbags from the car.

The airbags are currently set to active in NCS Dummy, I can change them to not-active but the ECU doesn't accept the re-write.

I know how to use NCS Expert and can read/modify/write to the other ECU's, but not the airbag ECU, not sure why?

Thank you.

Vince
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Old 09-16-2019, 09:36 AM   #2
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You can take out fuse 11 if i recall correctly? disables the airbags completely.
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Old 09-22-2019, 01:54 PM   #3
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This is much easier done with BMW Scanner 1.4, also called PA Soft. It needs a special cable but its dead easy. Read the errors, go into equipment and uncheck the subsequent airbags and faults.
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Old 09-24-2019, 03:48 AM   #4
Vinc3
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Quote:
Originally Posted by CarbonZHP View Post
This is much easier done with BMW Scanner 1.4, also called PA Soft. It needs a special cable but its dead easy. Read the errors, go into equipment and uncheck the subsequent airbags and faults.
Thanks for you advice, however airbag control units are hard coded, so you can tell the car to clear the fault code via the PA Soft scan tool, and dash light will go out momentarily but it then re-appears straight away as the airbag control unit is looking for resistances and airbags that are coded to be present in the car, but are not (in my case because I've removed them all)...

So what I'm asking is how to overcome (hack) the airbag control unit ECU, so that I can access the parameters and "uncheck/remove" the configurations to state that there are no airbags in the car.

PA Soft is a basic scan tool that will work on things such as DSC/brake pressure sensors if one fails and you replace it, you'll be able to clear the old fault code once a new sensor is in place.
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