2003 Mercedes-Benz E320 4MATIC Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2003 Mercedes-Benz E320 4MATIC

2003 Mercedes-Benz E320 4MATIC Problems

Spark plug wires causing misfire

Bad spark plug wires can cause misfires; the Check Engine Light may illuminate.

Replace air filter when replacing failed mass air flow sensor

The mass air flow (MAF) sensor tends to fail. The engine air filter should be replaced when the mass air flow sensor is replaced; a dirty filter can allow debris to damage the new sensor.

Oil May Leak From PCV Vent Housings and Inspection Plates

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.

See More Problems (25)

2003 Mercedes-Benz E320 4MATIC Questions

Back air conditioning is heating (1 answer)

Dear All,
I have a 2003 MB E 320Automatic. Since two months, when I put the air conditioning, in front the air coming out is cool and fresh bu in the back and in the gloves box hot air comes out.
Does anyone know what has to be repaired and how much it would cost?
Thank you for your support.
...

See More Questions (3)