BenzWorld Junior Member
Date registered: Jan 2009
Vehicle: 1994 E320 with 223,000 miles and going strong!
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
1994 E320 - can't pull dianostic codes
My 1994 E320 has had the 'check engine' light on for some time. Than it sat as I procrastinated fixing the leaking galley plug. After that was all done, I drove it few times - and BAM there's the light again.
It never seemed to effect gas mileage, or drivability.
I've read I am supposed to pull the cover off of a box in front of the battery - ok, found it.
Now, I am supposed to have the key on, but engine off - ok, done.
I am now supposed to hold the little button for 3-4 seconds, and this mystery light next to the button should start blinking in sequence. Won't happen.
I even tried the 6-8 seconds to reset the light. Won't work either.
Is there a way to see if this mystery port / switch / light is even plugged into anything??
Am I doing this procedure wrong?