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Tire Pressure Monitor System Reactivation

CAUTION: The warning system can only operate in a reliable manner if correct tire pressures are set. If an incorrect tire inflation pressure is set, the system will monitor the pressure according to the incorrect value.
NOTE: In the event of air pressure changes by the driver, or of a wheel replacement or a tire change, new air pressure values in the TPM [RDK] control unit are detected automatically by filling detection. Manual reactivation is merely planned as a stopgap solution if automatic filling detection fails.
  1. Ensure inflation pressure of all 4 tires is set to specification.
  2. On-board computer: Service > Tires.
  3. Swipe downwards on the Touch Control on the left-hand side of the steering wheel.. See Fig 1. The USE CURRENT PRESSURES AS NEW REFERENCE VALUES message is shown in the multifunction display.
  4. Press OK to confirm the restart. The RUN FLAT INDICATOR RESTARTED message is shown in the multifunction display.
  5. Current warning messages are deleted and the YELLOW warning lamp goes out.
  6. After the vehicle has been driven for a few minutes, the system checks whether the current tire pressures are within the specified range. The current tire pressures are then accepted as reference values and monitored.
Fig 1: Operating Touch Control
G00572136Courtesy of MERCEDES-BENZ OF NORTH AMERICA.