e85 airbag warning, INPA

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psychonaut

Member
hi guys hope you are well.

i bought a b-cable to use INPA to read and clear faults.

my airbag light has been on since a garage fixed my window. shudda gone back to them but its been ages now...

so i bought a cable and have it set up.

i got 3 errors on the safety system center. 2 of them are cleared and gone, but the light remains.

the following error that keeps coming back...

bmw1.jpg


my missus is swiss and is fluent in german, she says that it translates as the following:

Systemtime Issue raised at 4531.14 hrs
System time issue ended at 4531.14 hrs

No matching issue symptom
Test criteria met
Issue currently existing and has been saved
Issue will not cause a warning light

not sure where else to look on inpa to clear or find issue.

any ideas please?
 
hmm. got a bit more detail now from a sensor read. im just flailing around at the mo but this seems relevant

opencircuit.jpg


open circuit - broken wire i guess. any thoughts?
 
i think i have reset all the error codes on the car. the only one that came back is the one that says it wont cause a warning lamp...but the airbag light is still on
 
Ive been through this palava too. My light is back on after a garage cleared all fault codes and lights.
Think my airbag control unit is shagged.
Multiple codes in carly.
 
thanks. mot due in a few weeks so i need to get this sorted.

looks like its the fabled seat occupancy mat thing that costs a million pounds....maybe

the version of inpa i have would appear to be old.

any inpa guru's out there?
 
so im searching around and various things have come up:

1) unplug and replug the seat connectors.
2) the airbag can go off if you do 1)

anybody know if this is true?!
 
psychonaut said:
so im searching around and various things have come up:

1) unplug and replug the seat connectors.
2) the airbag can go off if you do 1)

anybody know if this is true?!
Click to expand...
Not sure about it deploying, maybe due to voltage spike. But either way this will def give you a warning light if your battery is still connected.

Always disconnect battery if you're going to disconnect any airbag cables and make sure theyre reconnected when you hook the battery back up.
 
psychonaut said:
ok, thats good info thanks.

any body got info on getting to the damn things?
Click to expand...

Have you tried getting ahold of ISTA/D and having a try with that?

Where are you located? I'm in Cambridge CB22 and have couple of gadgets you're welcome to try...

C310+, INPA, Carly, XDiag Pro, ISTA/D
 
I have read somewhere that the airbag light can be induced by someone kneeling on the seats causing a concentration of weight directly onto the weight detection mat.
This may be what had happened to initially cause the issue?
Just a thought. :D
 
For the sake of £8 I'd try a bypass module

https://www.ebay.co.uk/itm/BMW-Passenger-Seat-Occupancy-Mat-Bypass-Airbag-Sensor-E36E46E39E60E61M3M5X5-/271533362169
 
hi guys, thanks for your input.

i ordered this https://www.amazon.co.uk/gp/product/B017HRYD42/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
£20

and have just changed it over, cleared the error with my b cable and bingo! no more air bag light.

fyi, its easy to get at, picture attached. move the passenger seat fully to the back of the car, lift it up to maximum. get at it from the front.

Capture.JPG
 
have i effectively now got an airbag on off switch?

if i unplug the dongle i purchased, the airbag should be off right? if i plug it in, it turns it on?
 
ahh. ok, so no more airbag light, but now it thinks the seat is permanently occupied. so if you dont have the seatbelt plugged in, then it complains.

anyone know if this is an mot failure?
EDIT: its not an MOT failure...just phoned local garage

any ideas to get round this one please??
 
i'm surprised there isn't a dongle with a switch with 3 modes...

unoccupied
child occupied
adult occupied

it must just be different resistances. anybody seen one of those?
 
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