The engine may develop a stalling and/or no start condition due to a failed crankshaft position sensor.
Resources for the Repair and Maintenance of your 2003 Mercedes-Benz E320 4MATIC
2003 Mercedes-Benz E320 4MATIC
2003 Mercedes-Benz E320 4MATIC Problems
An engine Oil leak may develop from the PCV vent housing on the valve cover and/or the inspection plate on the front of the engine.
An engine oil leak may develop from the oil level sensor. Replacement of the leaking sensor will commonly correct this concern.
The rubber bond in the harmonic balancer can decay, which causes the balancer to move and work its way toward the timing cover. If the balancer comes into contact with the timing cover while the engine is running, it will fracture and damage the cover and potentially other surrounding parts. The harmonic balancer should be inspected at every service.
High mileage or older vehicles commonly develop leaks from the differential seals and/or cover. Our technicians recommend a complete reseal of the differential unit whenever these leaks are repaired.