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How to Replace the Serpentine Belt on a Smart Forfour?

Model: Smart Forfour MK 1, W454 - Years: 2004, 2005, 2006
Part: V-belt

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Video tutorial

To replace the serpentine belt on a Smart Forfour, loosen the screws that secure the front wheel to its housing, then remove the inner wheel arch lining. Here, you can remove the serpentine belt from the respective pulleys and the alternator.

This will allow you to position the new replacement part, ensuring it rotates correctly. Once the new serpentine belt is in place, reassemble all components that were previously removed.


Updated on 25 August 2026 by ScegliAuto


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by ScegliAuto

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