1994 Mercedes-Benz E420 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1994 Mercedes-Benz E420
- High Usage Vehicles May Experience Ignition Lock and Tumbler Failures
- Poor idle quality due to oil feed tubes falling into crankcase
- Radiators Break Due to Degradation of the Plastic Tanks and Fittings
- Sunroof Components May Fail Due to Age and Wear
- Faulty Mass Air Flow Sensor Causing Erratic Engine Operation and Poor Fuel Economy
- Heater Fan makes a very loud noise. Want to know what to do to fix it.
- I Have a 1997 ME/BE E-420. The heater motor quit no heat or fan motor now.
- Why the central locking system is not activated while driving at certain rpm?
- Car will not start when engine is warm. Only start again when engine is cool.
- How do I remove the rear seat to get to the CCM?
1994 Mercedes-Benz E420 Problems
Due to wear, high usage vehicles can experience ignition lock and tumbler failures. The ignition lock cylinder will generally require replacement to correct this concern.
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.
A coolant leak may develop form the Radiator due to degradation of its plastic components. Replacement of the failed radiator will be necessary.
1994 Mercedes-Benz E420 Questions
Can we do it ourselves?
What is the cost?
What happens if we don't fix it.
Fan motor was blowing at low speed for about a year.
Have an 1994 E320 as well and the doors do lock as I accelerate. My E420 does not. The central locking works when the doors are locked using the key.
1994 Mercedes-Benz E420 Reviews
The ASR light came out and the ABS light same time came on and all gauges stopped working. When engine was shut off, it could not be started and all the lights came on.
Great car but has a poor Electrical Wiring System
This is a wonderful automobile. You have to drive one to know.