Tire Pressure Monitoring System General Information

Refer to the operating instructions in 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 in Vehicle-Specific Information under "Vehicle Data" by the PR number. Refer to PRODUCTION CONTROL NUMBER (PR NUMBER) EXPLANATIONS .

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 tires. 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 tires. If the tire tread circumference of a tire changes, the tire pressure monitoring system indicator lamp turns on in the instrument cluster. The tire tread 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 temporary 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 System Appears 

The tire pressure monitoring system 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 Tire Pressure Monitoring System (TPMS+)

If the indicator lamp blinks for approximately one 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 fault in the system is stored in the ABS/ESP control module DTC memory and is indicated by a flashing yellow TPMS+ lamp in the instrument cluster (one minute after the ignition is switched on). The tire pressure monitoring system lamp cannot be switched off by pressing the Multimedia System Control Head -E380- button. Proceed as follows if there is a fault stored in the DTC memory:

-- Connect the Vehicle Diagnostic Tester.

-- Select the correct program in "Guided Functions".

-- Follow the instructions on the screen.

Perform Calibration: (Readapt Tire Pressure) 

The tire pressures must be stored in the MMI each time there is a change in the tire pressure or after a tire has been changed. Refer to the Owner's Manual.