2008 OBL 145,599 airbag light comes on

[LKalenda]

Hello Everyone

I have read older posts about this issue but I am wondering if there is some new information to fix this.  Occasionally the airbag light comes on.  I move the passenger seat a little, turn ignition off, turn it on and the light is out.  I know that there are connectors under the seat.  Do I need to replace the connectors?  Before I pull the seat and start messing with it, Is there an easy fix?     LarryK

[GeneralDisorder]

No idea. You need to pull the codes. 

GD

[brus brother]

My 05 had a problem with airbag light. Don't think it changed based on seat position. Mine was a faulty solder joint in the overhead console with the map light. I replaced the circuit board before learning about just re-soldering the connections. I will try and find a link to the discussion.

[brus brother]

if it is code 26 then 

and on this other video linked HERE another replaces the entire module $$$ but the comments below also reference refreshing ALL the solder joint even the LED. Chances are these boards flow through one solder station so all joints become suspect to the original manufacturer's faulty assembly. One comment also discusses a service to make the repair for $45 if you aren't comfortable with soldering.

[LKalenda]

Do I have to wait for the airbag light to turn on or get it checked for codes now?

[GeneralDisorder]

There should be history codes stored. 

GD

[LKalenda]

Okay, I had the coders pulled without the light on and when it was on.  No codes came.  No stored codes either.

[brus brother]

I once had an issue where someone in the rear seat stuck their foot under the driver's seat and dislodged the connector. Not sure why it would be so susceptible.

Try re-seating the connectors?

Odd that there are no codes?

Who read the codes? There are special code ABS/SRS readers for airbag info, different than then standard OBDII readers.

[LKalenda]

One was read at a Marlow Mercedes in Seaside and the other from an AutoZone store.  I will pull the seat and see what is there. 

[brus brother]

I was curious and just trying to help you out here. A quick call to Autozone in Seaside, Calif. confirmed that they don't check airbag codes, just check engine light (CEL). That was my experience here on the east coast as well. I guess they don't want any liability of you lap dancing with your front grill if the airbags fail ;-)
You might want to verify what Mercedes did for you but as for Autozone... seems not too much.
If you do a lot of your own work, a ~$100 scanner with ABS/SRS ability will be of use. Dealerships, especially Mercedes can do an airbag scan but generally, not for free.

[LKalenda]

I appreciate it and am tempted to buy the scanner.  The fact that moving the seat, stopping and starting the car makes the light go out every time makes me wonder.  I had the flashing climate control lights and was being pointed to solder joints but just pulled the front cover off, sanded the four spots where the spring clamps touched, covered with dielectric grease and the problem was solved.  

[brus brother]

yup, I just learned to tap the climate control face when it occurs. my understanding, grounding issue where it makes contact (at least on my 05). too lazy to tear into it.

as far as the airbag code, did you verify that the Mercedes dealer checked for airbag code??

here's a link for comparison LINK of "best of" scanners for ABS/SRS

I don't own one of these. I think I got a tech to read the code for me on one of my trips to dealership when I had the problem.

I use a cheap $20 OBDII scanner for my check engine light (always friggin P0420) to clear the code and get me passed inspection but you can get autozone to read codes for free. just waste of time driving there AND more importantly, they usually won't clear codes.

Maybe one of the "specialists" on the forum will chime in for a recommendation.