SRS Failure Indicator
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Joined: May 2004
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From: Rhode Island
Debadged 6-Speed '05 C320 Sports Coupe
SRS Failure Indicator
My '05 C320 sports coupe recently started illuminating the SRS failure indicator lamp and the SRS Restraint System Malfunction message in the display. This would happen whenever the passenger seat was unoccupied, after the vehicle was on for several minutes, but never with a passenger present and buckled.
The dealership diagnosed the problem. Fault codes 9080 and 9083 were present. The cause was the cable routing under the passenger seat. The wire was dressed from the factory such that the cabling to the connector was under tension. The cabling was redressed to provide slack at the connector and the fault codes were cleared. It is now fine.
The dealership diagnosed the problem. Fault codes 9080 and 9083 were present. The cause was the cable routing under the passenger seat. The wire was dressed from the factory such that the cabling to the connector was under tension. The cabling was redressed to provide slack at the connector and the fault codes were cleared. It is now fine.
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From: San Diego, CA & San Jose, Costa Rica & Stuttgart, Germany
1959 220S / 1979 230 G / 2002 A210 AMG / 2003 C320 SC / 2004.5 C320 SS / 2005 ML350 SE / 2008 smart
Interesting. My guess would have been something related to the BabySmart seat setting. Not saying you had a BabySmart seat, but the computer thinking it did. Maybe it was triggering the SRS off, but since it wouldn't detect whatever electronic gizmo the actual seat has inside, it gave off the malfunction message.
But, glad they were able to trace it and get it fixed.
Good info !
But, glad they were able to trace it and get it fixed.
Good info !
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From: NYC
2005 C320 4Matic
SRS Malfunction in 05 C320 4MATIC
I had a SRS Malfunction last week but was told it was OK to drive (the car was diagnosed and deemed drivable by MB Manhattan). I had it fixed today (by MB Somerville)
They had to replace the horn contact spiral (as far as I can gather, it's a spring that affects the sensor which measures how far the streering column is from the driver seat).
(Part #169-464-03-18 for those interested).
(Was given a replacement MB car while they worked on mine).
They had to replace the horn contact spiral (as far as I can gather, it's a spring that affects the sensor which measures how far the streering column is from the driver seat).
(Part #169-464-03-18 for those interested).
(Was given a replacement MB car while they worked on mine).
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From: Houston, TX
2015 E250D
If you had an SRS failure when the comand was replaced, it was probably due to the upper switch row not being connected. The spiral contact is the actual wire assy that connects the airbag and steering wheel buttons on the steering wheel to the connector behind the steering wheel. It's a spiral since the steering wheel has to turn. If the passanger seat being occupied solves the problem, it is the occupancy sensor on the passanger seat, or babysmart seat sensor pad, or a tight cable under the seat
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From: NYC
2005 C320 4Matic
I don't have COMMAND in my car 
The SRS light was ON regardless of the passenger seat being occupied or not.
On that note, does the center console light indicating the passenger air bag is ON/OFF stay on all the time if no one is sitting in the passenger seat? Mine goes out after a few seconds. In the 05 C240 they gave me as a loaner, it was on all the time. The Service Advisor (two of them in separate dealerships) told me that it is supposed to go off after a few seconds.
Anyone know better? (According to the manual it is supposed to be on for 6 seconds then goes off unless there is a child seat installed. Maybe the loaner was broken!) Thanks.
The SRS light was ON regardless of the passenger seat being occupied or not.
On that note, does the center console light indicating the passenger air bag is ON/OFF stay on all the time if no one is sitting in the passenger seat? Mine goes out after a few seconds. In the 05 C240 they gave me as a loaner, it was on all the time. The Service Advisor (two of them in separate dealerships) told me that it is supposed to go off after a few seconds.
Anyone know better? (According to the manual it is supposed to be on for 6 seconds then goes off unless there is a child seat installed. Maybe the loaner was broken!) Thanks.
Last edited by raunen; Jan 6, 2005 at 05:38 PM.
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From: Houston, TX
2015 E250D
That light should go off after a few seconds of starting the car. The only other time it should stay on is if a babysmart seat is installed. When I said Comand, I was referring to Doug's car.
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From: Singapore
C180K
Originally Posted by sunman
That light should go off after a few seconds of starting the car. The only other time it should stay on is if a babysmart seat is installed...
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From: NYC
2005 C320 4Matic
In other threads owners have talked about interference from mobile phones as well. In my case it was actually a bad connection in the steering column. I wonder if adjusting the steering wheel while driving can damage the coil.
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From: Puerto Rico
2009 Porsche 911 Carrera S
Had the same problem... Scared the hell out of me as I was on the expressway doing about 75 when the panel lit up red with the SRS warning.
According to the repair manifest, they changed two corroded electrical plugs in the steering wheel area.
According to the repair manifest, they changed two corroded electrical plugs in the steering wheel area.
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From: Houston, TX
2015 E250D
Originally Posted by dgwee
Interestingly, the other day when I left my security access card to my office on the car seat, the SRS airbag light came on...
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hey guys, i have a few questions about the airbag system as a whole. if there is a problem with one of the airbags and u dont want to fix it, will the system still work less that part? for example, if my left door airbag came out due to an accedent and i dont want to replace it. i just want the system to disregard this airbag, can that be done by reprograming or will the SRS warning keep popping up on my dash? another question, does the deployment of an airbag effect the sensors? or will the sensors still be working even if the airbag has been deployed?
cheers guys, hope someone knows his ****.
cheers guys, hope someone knows his ****.
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From: Augusta, GA
'05 SS Brillant Silver
Originally Posted by jlm003
Had the same problem... Scared the hell out of me as I was on the expressway doing about 75 when the panel lit up red with the SRS warning.
According to the repair manifest, they changed two corroded electrical plugs in the steering wheel area.
According to the repair manifest, they changed two corroded electrical plugs in the steering wheel area.
Just happen me tonight the same way...doing 55 down a back stretch and it popped on. Scared me ****less as I drove home the next 25 mins wating on teh airbar to deploy. O well...hi ho, hi ho, its off to the dealer I go.
