Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Low Tire Pressure Indicator: Service Precautions

Important notes when working on vehicles with the tire pressure warning system

- Always carry out a tire pressure warning system short test on the respective wheel every time a wheel or tire is changed.

- After the wheels have been finally balanced or after running on the test bench, erase the fault memory in the tire pressure warning system control unit.

- If Club-sport vehicles are filled with winter tires, remove the spacer on the rear axle if necessary. This is only necessary if the vehicle is fitted with permitted rims having a different offset. If the spacers are not removed, the pressure-operated switch will be offset in relation to the HF sensor which will activate the pressure loss display on the instrument cluster.

- Rims without pressure-operated switches must not be fitted to vehicles with the tire pressure warning system.