Tire Pressure Monitoring Display (PR7K6)

Tire Pressure Monitoring Display (PR7K6)

Refer to the Owner's Manual.

If the vehicle has a tire pressure monitoring system display, it will be documented on the vehicle data label or in ELSA under "Vehicle Data" by the PR number => [ Tire Pressure Monitoring System/Tire Pressure Monitoring System Display ] Description and Operation.

With the help of the ABS speed sensor, the tire pressure monitoring system compares both the rolling circumference and the vibration behavior of the individual wheels. The instrument cluster display shows if there are any changes to one or more wheels. If only one wheel is affected, the location of the wheel will be indicated.

The tire pressure monitoring system is a software module in the ESP/ABS control module for detecting slow losses of pressure at a wheel location. With the help of the ABS speed sensors, the TPMS compares the speed and rolling circumference of the individuals wheels. If the rolling circumference of a wheel changes, the tire pressure monitoring display indicator lamp lights up in the instrument cluster. Rolling circumference of tire may be change if:

• the tire pressure is too low.

• the tire has structural damage.

• the tire or the pressure was changed and the tire pressures were not saved.

• the vehicle is loaded on one side.

• the tires on one axle are loaded more heavily (for example when towing a trailer or driving up and down inclines).

• snow chains are installed.

• the spare tire is installed.

• one tire per axle was changed (or if the tires were rotated from front to back or the other way around).

• The left and right wheels drive on different surfaces for an extended period of time.

Tire Pressure Monitoring Display Appearing

The tire pressure monitoring display in the instrument cluster informs the driver if the tire pressure is too low or if there is a system malfunction.

System Fault in the TPMS Display (TPMS Display +)

If the indicator lamp blinks for approximately 1 minute after switching the ignition on and then stays on continuously, there is a system malfunction. "TPMS" is also displayed in the instrument cluster.

A system malfunction is stored in the Diagnostic Trouble Code (DTC) memory for the ABS/ESP control module and indicated by the yellow TPMS lamp in the instrument cluster. The TPMS lamp cannot be turned off by pressing the multimedia control head (E380) button. Proceed as follows if there is a fault stored in the DTC memory.

- Connect the vehicle diagnostic tester and select "Guided Fault Finding".

- Select the corresponding program in "Guided Functions".

- Follow the prompts on the screen.

Perform Calibration: (readapt tire pressure)

The tire pressures must be saved in either the radio or MMI (depending on equipment) each time the pressure or a tire is changed.

- Turn the ignition on, select the "CAR" function button and select the tire pressure monitoring system using the rotary switch on the multimedia control head knob and save the tire pressure by pressing the rotary knob.