two questions

[slk dude]

What would cause slk230 to vibrate when put in reverse?
Where is the MAS on a slk 230? If replaced will this solve check engine light?

 

[whitenemesis]

Vibrate in reverse could be engine mounts?

 

[television]

Hello and welcome, your fault could be the cam shaft seal gone that lets oil get into the engine via the MAF, the O2 sensor gets contaminated and this puts the warning lamp on