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How to Test the Speed Sensor on a Mercedes M-Class

Model: Mercedes Classe M - Years: 2005, 2006, 2007, 2008, 2009, 2010, 2011
Part: Checks and maintenance

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Video tutorial

In this guide, you will discover the instructions that will allow you to test the speed sensor on a Mercedes M-Class. First, lift the vehicle and begin removing the speed sensor located near the wheel by disconnecting its electrical connector; using a multimeter, check if it outputs voltage while in motion, which indicates proper functioning.

If the value is zero, the sensor is faulty and needs to be replaced with a new original one; test its operation on the bench and install it on the vehicle, completing the replacement operation!


Posted on 14 November 2026 by ScegliAuto


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