SL55/63/65/R230 AMG: Engine warning light SL55
You'd be better off borrowing a scanner (many auto parts stores loan them at no charge), seeing what DTC is being thrown, and looking for causes and fixes for that DTC.
Hope that helps,
I have ordered an Actron CP9175 scanner which will should tell me what the fault is and will reset the warning light. Being optimistic as the warning light is intermittent I wonder if it could be an occassional misfire as someone told me these systems are very sensitive. I should also add that I only use SL55 very rarely driving only about 1,000 miles per year which I know is not good for any car.
Thanks again for taking the trouble to reply to my question.



