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.
Resources for the Repair and Maintenance of your 1994 Mercedes-Benz E420
1994 Mercedes-Benz E420
1994 Mercedes-Benz E420 Problems
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.
A faulty mass air flow (MAF) sensor can cause erratic/rough engine operation and fuel economy issues. Since this sensor measures the actual amount of air entering the motor, when it fails, the engine control module (ECM) takes the wrong information and delivers incorrect volumes of fuel to the cylinders.
The sunroof may not work correctly due to failed components as a result of age and wear. Repairing a sunroof can be labor intensive and very costly.
1994 Mercedes-Benz E420 Questions and Answers
My blower doesn't kick on when I have the A/C on. The compressor is working fine, but the blower doesnt engage. Is the blower the primary culprit or are there other things I need to look at? A...
My 1994 E420 blower doesn't engage when in heat or A/C. The compressor kicks on and the line is cold and no leaks in the lines good pressure. So do I have a definite blower problem? I dont thi...
engine misses slow speed/rpm. could it be fuel filter? Or needing tuneup?
Will the catalytic converter be damage due to excessive heat.
1994 Mercedes-Benz E420 Reviews
Great car but has a poor Electrical Wiring System
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.
This is a wonderful automobile. You have to drive one to know.