My recently purchased 94 E420 check engine light does not light up when
I turn the ignition on without starting (all lights come on except the
CE and opposite side first lamp). Was this disabled by dealer or last
owner? And how can I check it?
BTW-- this car rockets even at 175K miles old, burns no oil and beats
out S500 due to lighter chassis, I shopped a 97 E430 and it didn't feel
like a Mercedes the way W124s do.