In this video, I show you how to remove and replace the turbocharger on a Mercedes W639 Viano with the OM646 engine. This guide is useful if you're dealing with loss of power, turbo whine, smoke, or boost issues.

2003-2014 Mercedes-Benz Vito/Viano (Model 639) Electrical Wiring Diagram Manual
https://tidd.ly/4sDSwmQ

⚠️ Important tips:

Always prime the turbo with fresh oil before installation
Replace oil feed line if clogged or contaminated
Check intercooler and pipes for debris/oil
Change engine oil & filter after job

💡 This is not a 10-minute job, take your time and stay organised.

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Hochgeladen am 12.04.2026   Problem melden   Dieses Video bei YouTube   The Keen Mechanic bei Youtube