I’ve been working on the Mercedes Benz SLK230 since I got it a week or so ago. I had an error code P1235 that was related to the supercharger. After reading the Internet forums it seemed that this was a common issue with this year model car.

I was able to locate a newer than mine K40 relay module and did the install. Only time will tell if it has made a difference I also went ahead and cleaned the Mass Air Flow sensor module MAF. Hopefully with these two fixes and tightening down all the air intake areas and vacuum hose probabilities the error code will not return.

Since I was working on the motor I decided to paint the front cover red. I bought one off a seller that wrecked their 1999 SLK 230. I also bought the K40 module, rear view mirror and pulley shock.