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Question

Is there a way to test passenger occupancy mat, such as resistance or what?

Submitted: 495 days ago.
Category: BMW
Value: $31
Status: AWAITING CUSTOMER ACTION
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Optional Information

Optional Information:
2000 BMW 328i M52

Already Tried:
scanning tool and found fault code

Posted by philhbmw 494 days and 21 hours ago.

Answer

Hi there, the most common fault with seat mats is high resistance / open circuit.

If the fault is not currently present it is common that the connecter, a small 2 pin plug under the seat towards the rear of the base, had a poor contact. This is usally caused by something under the seat pushing against it. I have found all sorts of items wedged under seats!

The mat can tested with a resistance check by seperating the mat from the cars loom and checking its resistance. Make sure you disconnect the battery before carrying out any work on the airbag system.

It is common for these mats the fail and are replaced by removing the seat base cover and replacing the mat that sits between the foam and the cover. I think they are around £60.

Hope this answers all your questions if not feel free to reply.

Regards Phil...

494 days and 15 hours ago.

Reply

That much I understand myself, but in order to check resistance you need to know what you are looking for, in other word what is the acceptable range. Sorry I am new to it, and I was not specific, but all the suggestions you mentioned are not there or have been eliminated. I just do not want to go through mat replacement, just to find out that it was not the mat. There is also an electronic module part # 65776940191 (original part# 65778367242) which can be faulty as well.

Posted by philhbmw 494 days and 10 hours ago.

Answer

Hi,

I will get resistance reading for you, and message back about this time tomorrow ok

Phil

494 days and 10 hours ago.

Reply

Reply to philhbmw's Post: I am getting this information from the dealer tonight.Thanks, anyway.

494 days and 4 hours ago.

Reply

I have my answer. I got resistance value from the BMW dealer. Do need any answer any more.
Thank you very much.

Edited by XXXXXX on 7/16/2008 at 9:35 PM

Answer

Hey,

That is a shame because i tested a mat at work today for you.

I got a reading of 1.1ohms not pressed and 1.08 ohms when mat pressed.

I always thought it was a mat fault.

Hope you fix your car

Regards Phil, an accept will be much apreciated.

 

Expert: philhbmw
Pos. Feedback: 100.0 %
Accepts: 
Answered: 7/17/2008

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