Description

This system continuously monitors the pressure of all four tyres on the vehicle and detects system faults.

The spare wheel is not monitored.

The system warns the driver of:

• overinflation,
• slight or severe underinflation,
• puncture,
• tyre pressures not suited to the vehicle speed,
• slow leak between the left and right tyres,
• left-right imbalance on start-up,
• sensor faults.

The system corrects the measured pressures against the coldest wheel. The corrected pressure is used for leak detection and left-right imbalance detection.

The system consists of:

• four pressure sensors built into the valves (one per wheel); they transmit a radio frequency signal,
• the cabin control unit, which receives, decodes and processes the sensor information, then determines the message to display,
• a display built into the instrument panel.

Each sensor is identified by a colour marker around the valve:

• green = front left,
• yellow = front right,
• red = rear left,
• black = rear right.

The colour code must be strictly observed so that the system displays the information correctly.

Each sensor is recognised by the cabin control unit through a unique code.

Wheels may only be swapped if the sensors are relearned and the colour codes are repositioned.