The W639 relies heavily on a front SAM module (located behind the glovebox assembly) and a rear fuse module (located in the right rear quarter panel). If your wipers, central locking, or indicators act erratically, look for water tracking down the A-pillar from blocked windshield drainage channels directly into the front SAM plug connectors. Grounding Points (W-Points)
Changing pads on a W639 isn't always straightforward. The manual covers the proper procedure for pushing back the caliper pistons and the specific brake bleeding sequence required for the ABS system, preventing you from turning a simple brake job into a expensive hydraulic failure.
Detailed specifications, repair procedures, and troubleshooting guides for the engine, including fuel system, cooling system, and exhaust. w639 workshop manual
Reinstall everything in reverse. Do not crank the engine dry. Turn the key to Position II for 30 seconds multiple times to allow the in-tank electric pump to prime the system and bleed air out through the return line. B. Resolving "Black Death" (Injector Seal Leakage)
Detailed specifications for the OM642 V6 and OM646/OM651 inline-four diesel engines, including precise torque settings and timing procedures. The W639 relies heavily on a front SAM
A hallmark issue of the OM646 and OM642 engines is carbon buildup around the fuel injectors due to copper washer failure.
For owners and mechanics alike, a is the definitive resource for maintaining the second-generation Mercedes-Benz Vito and Viano (produced from 2003 to 2014). Whether you are performing a basic oil change or a complex engine overhaul, these manuals provide the technical specifications and step-by-step procedures necessary to keep these versatile vans on the road. Why You Need a W639 Workshop Manual The manual covers the proper procedure for pushing
Rear-wheel drive (RWD) and 4Matic all-wheel drive (AWD) variants.
Electronic sliding doors frequently suffer from severed wiring harnesses in the lower track or faulty microswitches. The manual details how to remove the door cards and align the tracks perfectly. 4. Body, Trim, and Interior