Problem:
My Benz SRS light has come on, but it goes off when someone sits in the front passenger seat. Got any ideas about what is going on?
Solution:
This could just be a connector issue. Somehow the connector has come loose and/or the contact inside the connector is not “firm”. All of these “SRS lights” works off of resistance. Either too high or too low…. if you know someone with a MB star/DAS, just hooks it up and read the fault codes. Need to know what it is but if no one in your area has one, look under the seat and make sure all your connections are solid. the passenger seat have a sensor “inside” the seat cushion to detect when a “baby seat” is there and to not deploy the airbag but when a normal weight person is sitting there, that sensor is “off” and will allow airbag deployment.
If the above fails. The SRS unit has failed. This happen to me and it was a daunting task as I had to remove the seat and take apart the bottom seat cushion to get to the module itself. I bought a used SRS unit on E-bay. Haven’t had any issues for over 2 years. Just don’t let anyone knee the passenger seat cushion as it can cause stress to the unit itself and fail. *my GF tends to do this on our road trips to get to the back.
One thing to note if you have multi contour seats it makes it that much harder to re-install
