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Problems for specific Mercedes-Benz E550 years:

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Most reported 2009 Mercedes-Benz E550 problems

 

Verified for the Mercedes-Benz E550

Vehicles equipped with a 7-speed automatic transmission may develop a rough shifting condition, most commonly going up from first to second gear and going down from third to second or second to first gear. Our technicians tell us this is due to an internal component failure. Mercedes has released updated parts; the transmission will need to be removed and disassembled to complete the necessary repairs.

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Verified for the Mercedes-Benz E550

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 the outer edge of the rotor. Because of this, the rotors are usually replaced when the pads are worn (pad life varies depending on driving style and terrain).

11 Reports
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Verified for the Mercedes-Benz E550

Lack of audio or cell phone functionality may be related to the failure of the audio gateway module.

9 Reports
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Verified for the Mercedes-Benz E550

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

7 Reports
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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 to run after the car is turned off. Also, Worn airmatic pump mount bushings can causes noises in the front axle while driving on bumpy roads or a buzzing noise while the pump is running.

6 Reports
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Verified for the Mercedes-Benz E550

The camshaft adjuster solenoid (which is related to the variable valve timing system) may fail or timing chain/balance shaft components may wear, resulting in illumination of the Check Engine Light and various drivability issues. Mercedes-Benz has released a service bulletin outlining specific repair instructions depending on fault codes stored.

6 Reports
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Verified for the Mercedes-Benz E550

Water can damage the weight sensor in the front, passenger seat, causing the SRS (airbag) light to illuminate. There is an electrical component in the seat cushion susceptible to fluid damage. Any spills should be dried up immediately in order to try and prevent damage to the sensor.

5 Reports
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Verified for the Mercedes-Benz E550

The cup holder in the center console may break.

5 Reports
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Verified for the Mercedes-Benz E550

The early versions of the central gateway module (which allows different systems to communicate with each other) have software problems. 

4 Reports
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Verified for the Mercedes-Benz E550

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 reduce vibration), so if they crack, they will leak oil.

4 Reports
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Verified for the Mercedes-Benz E550

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.

4 Reports
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Verified for the Mercedes-Benz E550

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 in order to help prevent this problem.

4 Reports
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Verified for the Mercedes-Benz E550

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.

4 Reports
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Verified for the Mercedes-Benz E550

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

4 Reports
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Verified for the Mercedes-Benz E550

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 to the driveshaft center support bearing, or, in the worst case scenario, damage to the transmission or differential.

4 Reports
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