Air Bag fault light will not go off.

[Dans28Tdr]

My air bag fault light went off over the weekend and my dealership has not been able to get it fixed. They replaced the control unit yesterday and it is going back today. Has anyone else had this problem? How did your dealership fix it?

Thanks for the help,

Dan

[Old smart]

Yes. Problem found and fixed before delivery. Loose connector in the passenger air bag circuitry.

[John_H]

There was one car where the loose connector "stayed" loose and soldering them directly together was what it took to resolve the problem.

[Dans28Tdr]

Thanks for the help. I am going back for day-four at the Dallas dealership. I forwarded on your input.

[MPrice2984]

I had the same problem, it was solved by replacing the seat belts which had a build up of electrical resistance.

[geosynch]

I had this problem, and the solution for me was really, really simple. Stupid, even.

My kid was pulling the passenger seat forward all the way before he got out of it and leaving the belt hooked slightly around the seat back. He wasn't doing this intentionally, just trying to get something from behind the seat. But it would cause the seat belt to be quite tight.

Then I would drive off without him and the fault light would go off. I think it was telling me the seat was empty but the bell was tight.

Anyhow, just taking the slack out of the belt by pushing the seat back cured it.

It was a problem that drove me mad for a few weeks until I found it.

best,

geosynch

[smartSEATTLE]

Have had several issues with SRS lights.

Most of them are resolved by replacing a seat belt assembly. Did have one vehicle that we had a faulty plug on the SRS module and actually ended up replacing the wiring harness on the vehicle. smart does not make a repair kit for their plugs.

Would have not been a huge issue until we found out there is only 1 warning harness for the vehicle and it goes from the front bumber to the rear bumber and connects to everything in between. Had to strip the vehicle down to the frame and about 20 hours of labor to replace the whole thing.

[John_H]

Originally Posted by smartSEATTLE

smart does not make a repair kit for their plugs.

So the Basic Wiring Harness Repair Kit - W000 589 13 99 00 - and the Wiring Harness Repair Kit Supplement - W220 589 04 99 00 - don't allow smart centers to repair the plug?

[SmartTech]

MBZ does not sell repair connectors or pins for smart dealers, they have to buy the complete harness. however you can take the connector number to a mb dealer and if mb cars use the same plug you can get the parts there.

[John_H]

It sure looks like the kit has connector pins and crimp tools.




Okay, okay... My local Mercedes place says the cost is $2920 for the basic kit. I was just under the impression that all Smart centers had to have the repair kit.