Resources for the Repair and Maintenance of your Mercedes-Benz 400SEL
Mercedes-Benz 400SEL Models:
Mercedes-Benz 400SEL Problems
Electrical Issues Due to Degraded Engine Wiring Harness
The engine wiring can degrade because the insulating material falls off leaving the bare wire exposed. This can cause many problems depending on which wires are exposed and what they touch.
Throttle Valves May Experience Electrical Failure
The electronic throttle assembly may suffer an electrical failure. It is often cheaper to send the valve to a service center for repair that to purchase a new part.
Closing Assist/Door Lock Issues Due to Pneumatic System Problems
Problems with the pneumatic system can cause closing assist and door lock issues.
Transmission Oil Seals May Leak on High Mileage Vehicles
High mileage vehicles may develop a transmission fluid leak from one or more of the oil seals.
Poor idle quality due to oil feed tubes falling into crankcase
Oil feed tubes break and fall into the crankcase (engine) and the tappet becomes noisy
(ticking), resulting in degraded idle quality. Our technicians recommend
replacing all of the tubes at the same time, broken or not.
Mercedes-Benz 400SEL Questions and Answers
approx price ro fix low oil presure
When the A/C is on the driver side back seat floor gets very wet, please help.
The battery is drained every two days, and other devices such as windows don't operate correctly.my email is c.simmons73@yahoo.com
hood ornament fell off need to know how to put it on
How do I adjust the windshield wiper arms? The divers side keeps banging when going back to the parked position.