Combination Switch
 

I need to replace a combination switch in a 97 E320.

Is this relatively easy?

Any special tools required?

How do I remove the cover on top of Airbag to begin with? Where are the screws for the cover?

RE: Combination Switch
 

easy.

from the back of steering wheel.

RE: Combination Switch
 

Sleepwalker,

There are two holes in the back of the steering wheel. I cannot see inside the holes, but It feels that I can engage a mid-size flat head screw drive. It is very tight both clockwise and counterclockwise. The tip of my screww driver was bent. I did not want to apply too much force for the fear of breaking something.

What is insde the wholes and how do I get the airbag cover out?

Do you have any pictures or diagrams?

Thank you very much.

RE: Combination Switch
 

not flathead.

it is torx.

RE: Combination Switch
 

Thank you sleepwalker,

I have to go and buy the tool. Should I use alen wrench type torx or screww driver type torx. Do you happen to know what size?

Thanks.

RE: Combination Switch
 

torx 30 if am not mistaken.

at least 70mm long because it goes deep. too long will not give you enough space also.

the L-type got more power on it.

just disconnect the battery while doing it so you won't have a mercedes-benz mark logo on your forehead if ever it deployed accidentally.

if need radio code, just give me your radio serial number.

RE: Combination Switch
 

Thank you Sleepwalker.

Good News: I replaced the combination switch and it is working fine.

Bad News: When I start the car, the SRS red warning light goes off for a fraction of a second and It comes back on and stays on. Yes I checked and rechecked that the wire plug is connected to the airbag unint. Disconnected and reconnected the battery. Now it seems that I have a bigger problem to solve. Do you have any ideas Sleepwalker? Thanks for all your help.

RE: Combination Switch
 

did you mess up with that clockspring unit? check if you didn't pull it too tight while steering.

there's an open circuit.

RE: Combination Switch
 

Sleepwalker,

I just bought a new clockspring and replaced the old one. The SRS warning light still comes on.

Do you have any other advice?

RE: Combination Switch
 

just delete the fault code.

take it to the place where they got the scanner.