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Mercedes-Benz E320 4MATIC Problems

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

The engine may develop a stalling and/or no start condition due to a failed crankshaft position sensor.
A squeak from the steering column is often related to a rubber boot in the column or a seal in the power steering rack.
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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3 Known 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...
Due to the size and material used on the brakes of these vehicles, the brakes may start to squeak around the 50 percent wear point. The brake rotor surfaces become uneven, causing a lip to form at...

5 Known 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 ...
High mileage vehicles may develop a leak from one or more of the transmission oil seals.

10 Known 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.
Instrument cluster displays tend to fail, especially the clock and gear indicators. Our technicians tell us the instrument cluster will require replacement to correct this issue.
Brake lamp housings can melt, resulting in a loss of contact for the brake light bulb holder. If this happens, the brake light will not work. Replacement of the damaged lamp housing should correc...

5 Known 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 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.

3 Known Mercedes-Benz E320 4MATIC Heating & Air Conditioning Problems

A malfunctioning HVAC blower motor regulator can cause the blower motor to operate below the requested speed or not at all. Updated regulators are available; the blower motor and cover need to be r...
The evaporator temperature sensor can fail, causing the AC compressor not to cycle. If the AC compressor does not turn on, the AC system will not blow cold air. If the compressor is stuck on, the a...
A failed digital heater control valve can cause a lack of heat output from the climate control system.

0 Known Mercedes-Benz E320 4MATIC Maintenance Problems

5 Known Mercedes-Benz E320 4MATIC Miscellaneous Problems

The cup holder in the center console may break.
The switch for the vanity mirror light above the sun visor fail; there is an updated switch for some models. On the remaining models, due to a redesign, the mirror "cassette" will need replacement.
Due to wear, high usage vehicles can experience ignition lock and tumbler failures. The ignition lock cylinder will generally require replacement to correct this concern.

5 Known Mercedes-Benz E320 4MATIC Suspension & Steering Problems

A squeak from the steering column is often related to a rubber boot in the column or a seal in the power steering rack.
Irregular and premature tire wear can be caused by the lower control arm bushings cracking, resulting excessive movement at the control arm pivot point. Ball joints can also wear out prematurely, c...
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.

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Known 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...
Cup holders break easily, especially if sticky liquids are spilled into the cup holder mechanism.
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 evaporator temperature sensor can fail, causing the AC compressor not to cycle. If the AC compressor does not turn on, the AC system will not blow cold air. If the compressor is stuck on, the a...
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 ...
The bushings for the shifter lever wear out to the point where they break and fall out. This causes excessive movement (loose feel) in the shifter lever and a clanging-type noise when changing gears.
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