next time you start your car, can you check if your check engine light(MIL light) comes on and then off? I cant pass emision test because of that on my 2002 s500, so I want to you know maybe they wrong or it is broken. thanks

 

Yes it does.
If it doesn't it may have been turned off in software to mask a problem.
See also https://mercedesforum.com/m_92628/mp..._/tm.htm#92644
Stuart

 

well thats interesting, how do you turn it back on? or should I check my bulb first?

 

There isn't a bulb.
Go to the link I posted!
Stuart