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How to Check the Operation of the Cabin Fan Resistor

Model: (Various brands) Various

Video tutorial

In today's tutorial, you will see the test to perform to check the operation of the internal cabin fan resistor, applicable to most vehicles on the market. First, remove the resistor from the fan by disconnecting it from the connector; you will need a multimeter to check the resistor's functionality.

Set the tester to the resistance check mode and see if the multimeter displays the resistance value; if it does not, it means the resistor is faulty.


Updated on 5 May 2026 by ScegliAuto


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How to open the boot if it is stuck on a Mercedes B-Class?

On the Mercedes B-Class, the boot may become stuck, possibly due to a problem with the control button or the lock actuator. In this case, perform the emergency opening by following the simple procedure shown in this tutorial. First, unlock the locks with the remote control, then open the rear doors and, by operating the indicated lever, lower the backrest of the seat. Next, go inside the boot, locate the indicated gap, and manually unlock the lock using a small screwdriver.

Watch the video!


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