Tire pressure loss warning system (Canada only)

General notes

While the vehicle is in motion, the tire pressure loss warning system monitors the set tire pressure using the rotational speed of the wheels. This enables the system to detect significant pressure loss in a tire. If the speed of rotation of a wheel changes as a result of a loss of pressure, a corresponding warning message will appear in the multifunction display.

You can recognize the tire pressure loss warning by the Run Flat Indicator Active Press 'OK' to Restart message which appears in the Serv. menu of the multifunction display. Information on the message display can be found under "Restarting the tire pressure loss warning system"  .

Important safety notes

The tire pressure warning system does not warn you of an incorrectly set tire pressure.

Observe the notes on the recommended tire pressure  .

The tire pressure loss warning does not replace the need to regularly check the tire pressure. An even loss of pressure on several tires at the same time cannot be detected by the tire pressure loss warning system.

The tire pressure monitor is not able to warn you of a sudden loss of pressure, e.g. if the tire is penetrated by a foreign object. In the event of a sudden loss of pressure, bring the vehicle to a halt by braking carefully. Avoid abrupt steering maneuvers.

The function of the tire pressure loss warning system is limited or delayed if: • snow chains are mounted on your vehicle's tires.

• road conditions are wintry.

• you are driving on sand or gravel.

Ryou adopt a very sporty driving style (cornering at high speeds or driving with high rates of acceleration).

Ryou are towing a very heavy or large trailer.

Ryou are driving with a heavy load (in the vehicle or on the roof).

Restarting the tire pressure loss warning system

Restart the tire pressure loss warning system if you have:
• changed the tire pressure • changed the wheels or tires • mounted new wheels or tires

■ Before restarting, make sure that the tire pressures are set properly on all four tires for the respective operating conditions.

The recommended tire pressures can be found on the Tire and Loading Information placard on the B-pillar on the driver's side or the tire pressure table on the fuel filler flap.

The tire pressure loss warning system can only give reliable warnings if you have set the correct tire pressure. If an incorrect tire pressure is set, these incorrect values will be monitored.

■ Also observe the notes in the section on tire pressures  .

■ Make sure that the SmartKey is in position 2 in the ignition lock  .

■ Press the or
button on the
steering wheel to select the Serv. menu.

■ Press the or
button to select
Tire Pressure.

■ Press the button.

The Run Flat Indicator active Restart with OK message appears in the multifunction display.

If you wish to confirm the restart:

■ Press the button.

The Tire Pressure Now OK? message appears in the multifunction display.

■ Press the or
button to select
Yes.

■ Press the button.

The Run Flat Indicator Restarted message appears in the multifunction display.

After a teach-in period, the tire pressure loss warning system will monitor the set tire pressures of all four tires.

If you wish to cancel the restart:

■ Press the button.

or
■ If the Tire Pressure Now OK? message appears, use the or
button to
select Cancel.

■ Press the button.

The tire pressure values stored at the last restart will continue to be monitored.