Adarah

Check engine light came on yesterday, was thinking it might be the MAF. Took my CLK to the dealership today - supposedly the gas cap isn't holding pressure and needs replacing. I read on some other threads here that this can cause an issue too and the CEL light comes on so I hoping that really is all it is.

They want $300 to replace the cap and reprogram the computer. Rather sure they are raping me hard on this.

Just for my edification - how much should this cost me? lol

mis3

Hard indeed. This gas cap is $5!

Parts number is 0000101285. Check it yourself.

Amir_AMG

"reprogram the computer" get a generic obd2 and reset the codes. gas cap shouldnt be over 20$ anywhere. hopefully it solves your problems!

gixxerboy

even if you cant reset the codes , on an evap leak, the light will go out after so many key cycles

gixxerboy

or if your near me ill do it for half the price

Yidney

Wow. $300. That's criminal. Yes, it can cause a CEL. You have a system that captures gas fumes from your tank. A leak in that system will trigger an evap system code. The cap is part of that system.