Mercedes-Benz W639

Mercedes-Benz W639 (Vito and Viano 2003–2014): common faults, maintenance guides and repair tips.

Mercedes-Benz W639 driveshaft vibration

Often yes. The vibration usually appears between 70-110 km/h and goes away when you lift off the throttle. Typical causes are worn or seized driveshaf...

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Mercedes-Benz W639 boost pressure control and limp mode

The turbocharger control works on vacuum, so first check that there is enough vacuum and that the turbo actuator rod moves. A seized rod, a worn or di...

Vito 115 CDIVito 120 CDIViano 3.0 CDIViano 220 CDI

Mercedes-Benz W639 EGR valve stuck

It could. Fault code 2511-011 indicates that the EGR actuator (Y27) is not working properly. One cause is a stuck EGR valve. Read the fault codes firs...

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Mercedes-Benz W639 particulate filter differential pressure sensor and P2453

P2453 refers to the particulate filter differential pressure sensor, which measures the pressure difference across the filter. A sensor fault can caus...

VitoViano 3.0 CDI

Mercedes-Benz W639 heater blower faults

The blower speeds are controlled by the resistor pack, which is under the storage compartment in the middle of the dashboard. If the low speeds do not...

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Mercedes-Benz W639 air conditioning not cooling

Common causes are a refrigerant leak, wrong charge amount, a leaking condenser, the pressure switch, the compressor and the cooling fans. Measuring th...

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Mercedes-Benz W639 battery and charging warning light on

The most common cause is a worn alternator, for example worn-out brushes. Another possible cause is the power cable between the starter motor and the ...

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Mercedes-Benz W639 automatic gear selector faults

The cause is often in the gear lever position sensor or the lever module. Switching the car off and removing the key may restore function for a moment...

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Mercedes-Benz W639 automatic transmission fluid change (722.6)

The best method is flushing through the return hose, which replaces all of the old fluid. The filter is replaced at the same time. The fluid temperatu...

VitoViano 3.0 CDIVito 120 CDI

Mercedes-Benz W639 front end rattle

The most common causes are the front bushings of the lower control arms, the tie rod end and the anti-roll bar rubbers. When the worn parts were repla...

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Mercedes-Benz W639 will not start although the power comes on

The cause may be the ignition switch, the steering lock, the fuse holder or the starter motor. The diagnostic tool may show the start permissions as f...

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Mercedes-Benz W639 manual gearbox shifting and second gear

The gear lever shifter joint may be worn and give longitudinal play. Replacing the joint removed the play and improved shifting. Replacing the cables ...

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