Tire pressure. Tire pressure loss warning

The tire pressure loss warning of the Mercedes E-Class (4th generation, W212, 2009–2016) helps the driver detect dangerous pressure loss. This section explains how it works, its operating limits, and how to correctly restart the system after changes to tire pressure or a tire change.

General Notes

While driving, the tire pressure loss warning monitors the set tire pressure using the wheel speed. This allows the system to detect a significant loss of pressure in one wheel. If the wheel speed changes due to decreasing tire pressure, a corresponding warning message appears in the multifunction display.

You can recognize the tire pressure loss warning in the multifunction display in the Service menu by the message Tire pressure monitoring active Restart with OK. For information on displaying the message, see the section "Restarting the tire pressure loss warning".

Important Safety Notes

The tire pressure loss warning does not warn you of incorrectly set tire pressure. Observe the notes on recommended tire pressure.

The tire pressure loss warning does not replace regular tire pressure checks. A gradual pressure loss in several tires cannot be detected by the tire pressure loss warning.

The tire pressure loss warning cannot warn you of a sudden loss of air, for example caused by a foreign object piercing the tire. In this case, brake the vehicle carefully to a stop. Do not make any sudden steering movements.

The tire pressure loss warning works with limitations or with a delay when

• snow chains are fitted to your vehicle
• winter road conditions are present
• you drive on loose surfaces (e.g. sand or gravel)
• you drive very sportily (with high cornering speed or strong acceleration)
• you tow a very heavy or large trailer
• you drive with a roof load or heavy loading.

Restart the tire pressure loss warning

Restart the tire pressure loss warning when you

• you have changed the tire pressure
• you have changed wheels or tires
• you have fitted new wheels or tires.

Before restarting, make sure the tire pressure on all four tires is correctly set for the respective operating situation. You can find the recommended tire pressure in the tire pressure table on the fuel filler flap.

The tire pressure loss warning can only warn reliably if you have set the correct tire pressure. If an incorrect tire pressure is set, this incorrect value is monitored.

See the notes in the section Tire pressure for more information.

Make sure the key is in position 2 in the ignition lock. See for more information.

Using theorselect the Service menu on the steering wheel.

Using theorselect the Tire pressure menu on the steering wheel.

Using thepress.

The message Tire pressure monitoring system active. Restart with OK appears in the multifunction display.

If you want to confirm the restart:

Using thepress.

The message Tire pressure OK now? appears in the multifunction display.

Using theorSelect Yes.

Using thepress.

The message Tire pressure monitoring system restarted appears in the multifunction display. After a short learning process, the tire pressure loss warning monitors the set tire pressure values of all four tires. If you want to cancel the restart:

Press the buttonpress.

or

When the message Tire pressure OK now? appears, useorto select Cancel.Using thepress.

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

The Mercedes E-Class W212 (model years 2009–2016) provides precise information on tire pressure checks and the safe operation of the wheels. Only with the correct tire pressure and intact rims does the handling remain reliable and safe.

Mercedes emphasizes the importance of regular checks and proper maintenance – a clear sign of the brand's premium standard.

In this way, the E-Class lives up to its reputation as a safe and high-quality vehicle.