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How to Remove the SAM Module on a Mercedes Viano

Model: Mercedes Viano W639, MK 1 - Years: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
Part: Checks and maintenance

Video tutorial

In this video, see how to remove the SAM module on a Mercedes Viano. First, let’s define the SAM: it is the box that contains the fuses, relays, a microprocessor, and controls most of the vehicle's electrical functions.

SAM stands for "Signal Acquisition and Confirmation Module". It’s not a difficult task, but there is a screw a bit hidden under the plate. Remove the control unit and all the fuses to access the two Torx screws that need to be unscrewed.

Before that, loosen the three bolts holding the upper plate in place, one of which is hidden at the back. This plate will not come off unless you remove the lower plate.


Updated on 24 October 2026 by ScegliAuto


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Watch the video!


by ScegliAuto

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