Tyre monitoring display

The tyre monitor display uses the ABS sensors to compare the rolling circumference and the vibration characteristics of the individual wheels. Any change in the tyre pressure of one or more wheels is shown by the tyre monitor display in the instrument cluster and infotainment system displays.

Changes in the rolling circumference

The rolling circumference of a tyre can change:

• If the tyre pressure has been changed manually.

• If the tyre pressure is too low.

• If the tyre has structural damage.

• If the vehicle is loaded more heavily on one side.

• If the wheels on one axle are loaded more heavily, e.g. high load level.

• If snow chains have been fitted.

• If a temporary spare wheel has been fitted.

• If one wheel per axle has been changed.

In certain circumstances, the tyre monitor display may become slow or may not display anything, e.g. with a sporty driving style, in winter driving conditions, on unpaved roads, or when driving with snow chains.

Calibrating the tyre monitor display

The tyre monitoring display will have to be re-calibrated after changing the tyre pressure, or after changing one or more wheels. This also applies when wheels are swapped, e.g. from the front to the rear.

• Switch on the ignition.

• Press the infotainment button .

• Touch the function button to open the Vehicle settings menu.

• Touch the tyre monitor display function button.

• Touch the SET function button.

• If all 4 wheels are set to the correct values, touch the Confirm function button to store the tyre pressures.

• Touching the Cancel button will prevent the current tyre pressures from being stored and the system will not be calibrated.

During normal vehicle operation, the system calibrates itself independently to the fitted tyres and the tyre pressures filled by the driver. The calibrated values are accepted and monitored after a long journey at various speeds.

If the wheels are loaded more heavily than normal, e.g. if the vehicle is carrying heavy payload, the tyre pressure must be raised to the recommended full-load tyre pressure before calibration .

The Tyre Pressure Monitoring System stops working if there is a fault in the ESC or ABS .

When using snow chains, an incorrect display may be shown as the snow chains increase the tyre circumference.