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How to Replace the Air Conditioning Compressor Pulley on a Mercedes B-Class?

Model: Mercedes Classe B W246, MK 2 - Years 2011-2019
Part: Checks and maintenance

To replace the air conditioning compressor pulley on a Mercedes B-Class, lift the vehicle to access the bolts securing the front wheel on the passenger side. Next, remove the inner cover of the wheel arch. Once these components are removed, locate the serpentine belt and the compressor pulley. By sliding off the belt, you can loosen the central nut of the pulley, completely removing it from its seat and installing the new replacement part.

Updated on 31 August 2026 by ScegliAuto

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While driving, if you notice the tyre pressure warning light coming on, first check the actual inflation pressure of the tyres and, if necessary, restore the pressures recommended by the manufacturer. After restoring the correct pressures, you need to reset the warning light that has illuminated on the instrument cluster. To do this, locate the reset button on the lower central console. Press this button and hold it down for at least 3 seconds, after which the low pressure indication will turn off.

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