Tire pressure system

Tire pressure system (TRM) alerts the driver when a significant loss of air pressure is detected in any of the four tires. The system uses the control unit in the passenger door (PDM), onboard electrical equipment control unit (VSM), driver information display (DIC), dashboard (IPC) and pressure sensors with radio frequency transmitter (RF) on every wheel. At vehicle speeds below 30 km/h, the sensors give a signal for 60 minutes, minimizing battery consumption in the sensor. At speeds above 30 km/h, the signal is given every 60 seconds. When the system detects a significant loss of tire pressure, the message CHECK TIRE PRESSURE appears in the driver information display (check tire pressure) and the warning indicator lights up. The system does not display the pressure in an individual tire, but writes fault codes to the memory of the PDM (C0750, C0755, C0760 or C0765 - fault codes for pressure sensors, C0775 - code for not entering information about sensors).

After replacing the PDM/door switch, the PDM must be programmed for the correct functioning of the tire pressure monitoring system. In spare parts, the PDM unit is shipped with the tire pressure monitoring option disabled in order to use the unit on models with and without this system. Once the pressure monitoring system option is enabled, it cannot be disabled, so before enabling the option, make sure that the car model is equipped with a tire pressure monitoring system. After installing a new PDM unit, it is necessary to enter the identification codes of the pressure sensors into its memory. The same must be done when replacing the pressure sensor or after rotating the wheels.

The codes are entered in order: left front, right front, right rear and left rear. Since special equipment is required to enter codes, this procedure is best done at a service station.