Model Years Affected: 2003, 2004, 2005
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.
Q&A > Mercedes-Benz > 2001 Mercedes-Benz E320 4MATIC
Common Problems > Mercedes-Benz E320 4MATIC