SL-Class (R129) 1990-2002: SL 280, SL 300, SL 320, SL 500, SL 600, SL 60 AMG

500SL check engine light

Old 11-24-2013, 05:50 PM
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500SL check engine light

My check engine light came on for no reason. I checked the gas cap. I changed the oil last month but a maintenance wrench comes on when I start it. I ran the diagnostics and it still comes on. What else would make the check engine light to come on? There is nothing wrong with the engine????? Regards, Rick.
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Old 11-25-2013, 05:17 PM
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94 SL 600, 98 993, 89 XJS Conv., 85 Daimlier Princess 16 Hybrid Lincoln 16 Chevy crewcab
The most annoying, not worthy of correction for the 600 is the MAS in the airflow chamber. I have replaced but it has a sensitivity far beyond normal, and Kansas dust will set off the CEL. I have not replaced a second time ( new was about 1K for both ). The car runs fine. An Indy cleared codes and its off for several months, but has returned ( several times)
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Old 11-01-2014, 12:30 AM
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1980 450SLC,1991 SL500, 1998 SL500
Hi, CEL shows to call attention with wrench sign for need of maintenance. See if you get a code. You may thing of no engine problem, but it will show later what is not functioning. Goodluck!
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