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Problems for specific Mercedes-Benz ML500 years:

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Newest reported 2007 Mercedes-Benz ML500 problems

 

Verified for the Mercedes-Benz ML500

Bad spark plug wires can cause misfires; the Check Engine Light may illuminate.

2 Reports
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Verified for the Mercedes-Benz ML500

The mass air flow (MAF) sensor may fail, resulting in drivability issues and/or illumination of the Check Engine Light.

4 Reports
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Verified for the Mercedes-Benz ML500

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

28 Reports
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Verified for the Mercedes-Benz ML500

On vehicles with airmatic suspension, the airmatic pump relay can stick, causing a dead battery, because the pump continues to operate when it should be shut off. Eventually, the pump will fail; the pump, fuse, and relay will need replacement. After parking and exiting the vehicle, the airmatic pump should only run for a few seconds before turning off. It should not come back on until the driver's door is opened.

2 Reports
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Verified for the Mercedes-Benz ML500

After a heavy rain storm, the drains for the heating, ventilation and AC (HVAC) system intake can be plugged with leaves and other debris, causing a dead battery. Water fills the intake cavity and overflows into the vehicle, directly onto the blower motor and its regulator. This causes the regulator to short out and the blower motor will continue to run, despite the key being off and removed from the vehicle. Usually the carpet at the right front passenger floor will be wet too. If the carpet is saturated, the passenger seat may need to be removed to dry out the battery storage area before water or moisture reaches the relay and fuse holders. To prevent this, do not let leaves and twigs accumulate at base of windshield. If there are leaves or debris below the wiper blades, clean the area.

2 Reports
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Verified for the Mercedes-Benz ML500

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.

9 Reports
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Verified for the Mercedes-Benz ML500

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 engine is running, it will fracture and damage the cover and potentially other surrounding parts. The harmonic balancer should be inspected at every service.

6 Reports
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Verified for the Mercedes-Benz ML500

Bolts that connect the automatic tailgate actuator lever to the tailgate can break. The broken bolts need to be drilled out and the holes re-threaded before a new bolt can be installed. If you hear any unusual noises when raising or lowering the power tailgate, have the mounting bolts inspected to make sure they are tight so the problem can be repaired before the bolts break.

3 Reports
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Verified for the Mercedes-Benz ML500

 The tailgate latch may stick causing a drain on the battery while the vehicle is parked.

3 Reports
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Verified for the Mercedes-Benz ML500

Due to slipping clutches in the transfer case, a shudder or rumbling from the center of the vehicle may occur, especially when turning at slow speeds. If the clutches are not too badly worn, changing the fluid will fix this problem. Otherwise, the transfer case will need to be disassembled to change the clutches.

11 Reports
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Verified for the Mercedes-Benz ML500

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.

4 Reports
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Verified for the Mercedes-Benz ML500

Leaks may develop from the differential cover and/or seals on high mileage or older vehicles. Our technicians recommend a complete reseal of the differential unit if these leaks are addressed.

7 Reports
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Verified for the Mercedes-Benz ML500

An engine oil leak may develop from the oil level sensor. Replacement of the leaking sensor will commonly correct this concern.

8 Reports
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Verified for the Mercedes-Benz ML500

A problem with the ball joints can cause a creaking noise. There is an updated part to remedy this problem.

3 Reports
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Verified for the Mercedes-Benz ML500

The brake light warning message for a bulb out may be displayed. Our technicians tell us the tail lamp housing may melt and distort causing a poor connection at the bulb. The lamp housing should be replaced to correct this condition.

4 Reports
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