Passenger Seat Belt Warning Error

tambat · 04-09-2014, 04:11 PM

I've been dealing with this issue since on my '08 e90 335xi. Some times when someone sits in the passenger seat for a while, when they get out, the seat still thinks there is a passenger in there and the seat belt warning will go off OVER AND OVER again. it gets quite annoying. it seems the sensor for the weight on the seat may be off calibration as well. If i put even a spring jacket on the seat that weighs only a few pounds, it can cause the car to scream at me about the passenger seat belt. anyone else deal with this? my research shows that the MY2006 had a recall for an issue like this but nothing for '08. sorry if this has been discussed, i had a hard time finding a thread about it.

cialz · 04-09-2014, 04:20 PM

find a coder to code it out

cband · 04-09-2014, 04:22 PM

you can code out the seatbelt chime. Or you can disconnect the seat sensor and code out the mat sensor fault error and seatbelt chime. This would mean your airbag will always deploy regardless of what is in the seat. Other options are new MAT sensor (expensive and impossible in install), new seat, or MAT sensor bypass which is the same solution as coding.

tambat · 04-09-2014, 04:25 PM

thanks for the quick answers! seems to be an easy fix, i'll have the chime coded out.

04-09-2014, 04:11 PM	#1
tambat Do it for a living. 60 Rep 144 Posts Drives: F80 MG M3 m/t Join Date: Feb 2014 Location: Glenview IL iTrader: (4)	Passenger Seat Belt Warning Error I've been dealing with this issue since on my '08 e90 335xi. Some times when someone sits in the passenger seat for a while, when they get out, the seat still thinks there is a passenger in there and the seat belt warning will go off OVER AND OVER again. it gets quite annoying. it seems the sensor for the weight on the seat may be off calibration as well. If i put even a spring jacket on the seat that weighs only a few pounds, it can cause the car to scream at me about the passenger seat belt. anyone else deal with this? my research shows that the MY2006 had a recall for an issue like this but nothing for '08. sorry if this has been discussed, i had a hard time finding a thread about it.
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04-09-2014, 04:20 PM	#2
cialz Second Lieutenant 15 Rep 251 Posts Drives: e93 335i 07 Join Date: Jan 2014 Location: LA, CA iTrader: (0)	find a coder to code it out
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04-09-2014, 04:22 PM	#3
cband Private 3 Rep 76 Posts Drives: 330xi (2006) Join Date: Jan 2014 Location: Northen USA iTrader: (0)	you can code out the seatbelt chime. Or you can disconnect the seat sensor and code out the mat sensor fault error and seatbelt chime. This would mean your airbag will always deploy regardless of what is in the seat. Other options are new MAT sensor (expensive and impossible in install), new seat, or MAT sensor bypass which is the same solution as coding.
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04-09-2014, 04:25 PM	#4
tambat Do it for a living. 60 Rep 144 Posts Drives: F80 MG M3 m/t Join Date: Feb 2014 Location: Glenview IL iTrader: (4)	thanks for the quick answers! seems to be an easy fix, i'll have the chime coded out.
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