SL500 Mercedes / Check Engine Light on
Hi I have a 1999 SL 500 Mercedes. I put gas in last night and noticed my check engine light was on today. I then recaped the gas tank but the check engine light won't go off. How do I reset this.

Thank you
Ann

 

I have 1999 SL500 Mercedes. I put fuel in last night and today the check engine light is on and won't go off. I recaped the gas tank tight but check engine light won't go off. How do I reset this.

Thank you
Ann

 

SL500 Mercedes / Check Engine Light on
Hi I have a 1999 SL 500 Mercedes. I put gas in last night and noticed my check engine light was on today. I then recaped the gas tank but the check engine light won't go off. How do I reset this.

Thank you
Ann

 

I had the same problem with my 560sl. I took it in to the dealer and they said it was a sensor that picked up engine knock...."WHAT" I asked back. If you get a low quality gas or a lower octane level it will do this. How much did you put in? I put in a half tank at the time and they said they could pump it out for $400 (NO). So I went to a reputable station and put 93 octane in the rest of the tank. I noticed the light came off and zero trouble from then on. Hope this helped.

 

it will go off after a set amout of drive cycles/ ignition start ups... no big deal. you can go to an auto supply store and they might be able to clear it for you if it bothers you that much

 

Thank you
Ann