Warning: The tire pressure monitoring system does not replace the need for regular tire pressure checks. It only warns of low tire pressure, but does not inflate the tires. Incorrect tire pressure may increase the risk of tire damage, resulting in loss of vehicle control, and injury to the driver and passengers. Insufficient tire pressure increases fuel consumption, reduces tire life, and impairs vehicle handling and safety. Check your tires regularly, especially when driving on poor roads or off-road.
Note: When inflating a tire, try to avoid twisting or damaging the inflation valves. Always check that the inflation head and tire valve are connected correctly. When snow chains are installed, the system may take longer to detect a loss of tire pressure.
Monitoring the reduction in tyre inflation pressure is a function of the ESP system. The ESP control unit indirectly detects a reduction in pressure by counting the wheel speed. As soon as the distance travelled by the wheel in one revolution decreases, the corresponding indicator lamp lights up in the instrument cluster "
" (see section 13) and a sound signal is heard. The indicator flashes to indicate a malfunction in the system.
The distance traveled by a wheel in one revolution may change in the following cases:
- at low pumping pressure:
- in case of damage to the tire or disk;
- when the vehicle is unevenly loaded;
- if the wheels of one axle are loaded more than the wheels of the other axle (for example, when towing a trailer);
- if a compact spare tire is installed:
- if snow chains are installed;
- after changing the wheel.
After changing the tire inflation pressure or replacing at least one wheel, the system should be reset to its original state (set current normal conditions). To do this, follow these steps.
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- Adjust the inflation pressure of all tires.
- Turn on the ignition.
- Click the " button
" in the center console (25 in illustration 12.1) and hold it for at least two seconds. The indicator in the button should light up. At the same time, the system memory contents are reset and a new calibration is started, which is indicated by a sound signal and the indicator turning off. - If the alarm "
" lights up and does not go out after the system is reset to its original state, this means that there is a malfunction in the system.
Under certain conditions (sporty driving style, winter conditions, unpaved road) the system may not work or work with a delay. For trouble-free operation of the system, it should be reset every 10,000 km or once a year.