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2005 Mercedes-Benz E320 4MATIC Problems

Find the most common issues based on 2005 Mercedes-Benz E320 4MATIC owner complaints.
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Most Common 2005 Mercedes-Benz E320 4MATIC Problems

The engine may develop a stalling and/or no start condition due to a failed crankshaft position sensor.
The ESP and BAS warning lights may illuminate due to a failed brake light switch. Replacement of the failed switch should correct this concern.
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.
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2 Known 2005 Mercedes-Benz E320 4MATIC Brakes Problems

It is not uncommon to encounter premature failure of the anti-lock brake system (ABS) modulator assembly due to dirty brake fluid. Our technicians recommend flushing the brake fluid every two years...
This vehicle has sensotronic brake control (SBC). If the SBC light on the dash illuminates, have the brakes checked. If the SBC is not working, limited brake pressure is delivered to the front brak...

3 Known 2005 Mercedes-Benz E320 4MATIC Drive Train Problems

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.
A vibration felt through the center floor of the vehicle can be caused by driveshaft flex discs, which crack and shred, causing excessive driveshaft movement. Not repairing these can cause damage ...
The electrical connector at the automatic transmission may leak fluid into the wiring harness. If not repaired, the oil will migrate through the wiring harness and damage the transmission control...

5 Known 2005 Mercedes-Benz E320 4MATIC Electrical & Lights Problems

The ESP and BAS warning lights may illuminate due to a failed brake light switch. Replacement of the failed switch should correct this concern.
Lack of audio or cell phone functionality may be related to the failure of the audio gateway module.
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 ...

6 Known 2005 Mercedes-Benz E320 4MATIC Engine Problems

The engine may develop a stalling and/or no start condition due to a failed crankshaft position sensor.
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.

4 Known 2005 Mercedes-Benz E320 4MATIC Exhaust & Emissions Problems

Failed spark plug wires and/or ignition coils can cause intermittent misfires (rough running); the Check Engine Light may also illuminate. Diagnoses of the ignition system will be necessary to dete...
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.
Catalytic converter failure is common and may cause a Check Engine Light to illuminate.

1 Known 2005 Mercedes-Benz E320 4MATIC Heating & Air Conditioning Problem

A failed digital heater control valve can cause a lack of heat output from the climate control system.

0 Known 2005 Mercedes-Benz E320 4MATIC Maintenance Problems

2 Known 2005 Mercedes-Benz E320 4MATIC Miscellaneous Problems

The cup holder in the center console may break.
The release tab for the center console can fall off unexpectedly.

3 Known 2005 Mercedes-Benz E320 4MATIC Suspension & Steering Problems

Rear air springs (bellows) may develop leaks, which causes the air pump to run more often to maintain ride height. Our technicians recommend that leaking air springs be replaced.
Irregular and premature tire wear can be caused by the front thrust link bushings cracking and causing excessive movement in the suspension. The thrust link bushings are fluid-filled (to help reduc...
The relay which turns the airmatic suspension pump on may fail causing the pump to run continuously. This can result in failure of the pump motor or a dead battery as the pump motor will continue...

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Known 2005 Mercedes-Benz E320 4MATIC Problems & Complaints

Catalytic converter failure is common and may cause a Check Engine Light to illuminate.
Bad spark plug wires can cause misfires; the Check Engine Light may illuminate.
Lack of audio or cell phone functionality may be related to the failure of the audio gateway module.
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 ...
Rear air springs (bellows) may develop leaks, which causes the air pump to run more often to maintain ride height. Our technicians recommend that leaking air springs be replaced.
The cup holder in the center console may break.
The early versions of the central gateway module (which allows different systems to communicate with each other) have software problems.
The engine may develop a stalling and/or no start condition due to a failed crankshaft position sensor.
The relay which turns the airmatic suspension pump on may fail causing the pump to run continuously. This can result in failure of the pump motor or a dead battery as the pump motor will continue...
Failed spark plug wires and/or ignition coils can cause intermittent misfires (rough running); the Check Engine Light may also illuminate. Diagnoses of the ignition system will be necessary to dete...
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.
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 ...
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.
The electrical connector at the automatic transmission may leak fluid into the wiring harness. If not repaired, the oil will migrate through the wiring harness and damage the transmission control...
The ESP and BAS warning lights may illuminate due to a failed brake light switch. Replacement of the failed switch should correct this concern.
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