Check Engine light
Thread Starter
Senior Member
Joined: Apr 2004
Posts: 393
Likes: 2
From: Mesa, AZ
2011 E350 Bluetec, 1996 S320 & 2006 E320 CDI Sold to my son & 2017 GMC 2500 Diesel Pick up
Check Engine light
This weekend I did the inside and out cleaning of my S320. I powerwashed the engine compartment and must have got something wet that I souldn't have. Probably water went past bag wrapped around dist. . The Check engine light came on & the car ran bad at idle. after driving around it dried out and has been fine ever since. QUESTION 
how do I get the light to go out ? Is disconnecting the battery the best or only way ?
Thanks
Rod
'84 190E 177k
'96 S320 104k
'03 GMC Sierra 32k
how do I get the light to go out ? Is disconnecting the battery the best or only way ? Thanks
Rod
'84 190E 177k
'96 S320 104k
'03 GMC Sierra 32k
Super Member
Joined: Mar 2004
Posts: 640
Likes: 0
From: Granbury Texas(burbs of DFW)
a Few Nice cars.
Hey bud, Yepp whenever you wash your mercedes engine it will run like a ford and chevy(like crap)and the CE light will pop on all the time,only way to turn it off other then paying mercedes $$$ to turn it off is to go to the trunk and pull the + off the battery for about 15 mins(i do) and then it will go off,but only do it after the engine is completly dry..i have a s500 that has done that 2 times on me and both times it was right after i washed the engine!!! hope that helps!!!
benzkid
till the next epsiode!
__________________________________________________ ____________
1994 S500 Metalic Green
1995 Buick Riviera lowered custom work! 
benzkid
till the next epsiode!
__________________________________________________ ____________
1994 S500 Metalic Green
1995 Buick Riviera lowered custom work!
Member
Joined: Apr 2004
Posts: 105
Likes: 0
1997 S600 Sedan
Any of the available scan tools can turn off the check engine light
Removing the battery cable is by far the most economical, but you'll get no info about what code was stored. The scan tools run from around US$100 to many hundreds. Also, Autozone will read check engine light codes for you, but I don't know if they will turn off the light.
Brett
Brett
