Your Mercedes Benz S engine control system detects a problem, the computer stores the diagnostic trouble
code C3968 in its memory.
To figure out what is wrong with your vehicle you must first extract the C3968 DTC For Mercedes Benz S.
On 1999 and later C3968 Mercedes Benz S engines, the instrument cluster has a built-in self-diagnostic mode that can be accessed by pressing and holding the instrument cluster SELECT/RESET button. Insert the ignition key and turn to the RUN position (but don't crank or start engine). Continue to press and hold the SELECT/RESET button (for 5 seconds) until the word TEST is displayed by the odometer. Release the SELECT/RESET button within three seconds after the word TEST is displayed to begin the self-diagnostic mode.
C3968 Mercedes Benz S DTC Meaning
Chassis Code - Problem is controller area network wiring bus and modules.
SAE - Generic
Vehicle Speed Output Circuit
Park/Neutral Postion (PNP) Switch Circuit Engine Torque Signal Circuit
The scent may C3968 Mercedes Benz S signal oil or coolant leaking from their normally closed-loop systems, or it may indicate dangerous exhaust gases invading your car's interior. Car and truck exhaust contains toxic gases such C3968, so if the inside of your car C3968 DTC For Mercedes Benz S as if you were standing behind your car, get out and get it fixed. Fight the urge to take a little nap first. So sleepy. That's the carbon monoxide talking, friends. At least open a window on your way to the shop.