Check Engine *rant warning*
Thread Starter
Super Member
Joined: Apr 2011
Posts: 541
Likes: 232
2021 GLS580 | 2011 ML350 BlueTec | 2009 Pontiac G8 GXP
Check Engine *rant warning*
Why in the age of full color IPs do we still have a generic "check engine" light?! The wife's 2011 Bluetec with just under 40k illuminated the useless light on the way home from the grocery store. I know most of the time they are simply for emissions related things and yes I checked the gas cap. 
Anyone know if a simple OBDII reader will be able to read the DTCs? I suppose it is still under warranty so it will likely end up at the dealership after I take care of the D maintenance items.
Anyone know if a simple OBDII reader will be able to read the DTCs? I suppose it is still under warranty so it will likely end up at the dealership after I take care of the D maintenance items.
Junior Member
Joined: Feb 2013
Posts: 47
Likes: 1
From: Puerto Rico
2010 S-550
Check engine light
Check your manual. There are several areas that could have a problem, such as the ignition system, gas, converter, etc. My check engine light came on, then stayed off, but since battery was original and 7.5 years old I changed to a new one. Several weeks later car cranked and cranked but would not start. Finally started after about 15 minute cool down, but warning light stayed on.
Problem turned out to be crankshaft position sensor was bad.
Warning lights have a purpose!
Problem turned out to be crankshaft position sensor was bad.
Warning lights have a purpose!
Thread Starter
Super Member
Joined: Apr 2011
Posts: 541
Likes: 232
2021 GLS580 | 2011 ML350 BlueTec | 2009 Pontiac G8 GXP
Check your manual. There are several areas that could have a problem, such as the ignition system, gas, converter, etc. My check engine light came on, then stayed off, but since battery was original and 7.5 years old I changed to a new one. Several weeks later car cranked and cranked but would not start. Finally started after about 15 minute cool down, but warning light stayed on.
Problem turned out to be crankshaft position sensor was bad.
Warning lights have a purpose!
Problem turned out to be crankshaft position sensor was bad.
Warning lights have a purpose!
