Mercedes-Benz E320 Problems

RepairPal has identified the most common problems with the Mercedes-Benz E320 as reported by actual vehicle owners. We'll tell you what the problem is and what it'll take to fix it.

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Known Problems

Many software updates are available for the different computer systems, but if the vehicle is out of warranty, it may cost money to receive the updates (unless it is a recall). Some updates may be dealer-only, but a well-equipped independent shop can usually provide updates as well.

Due to wear of mechanical parts in the control head, the buttons on temperature control assemblies work erratically or not at all. These control heads need to be replaced for this concern or when the display screen starts to fade out.
A knocking noise from the front end can be caused by cracked strut tower bushings.

Fuel leaks, erratic or rough engine operation, and fuel economy issues can be caused by the failure of a fuel system component called the EHA (electro-hydraulic actuator) valve.