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ATEQ TPMS Reset Procedure

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: Whenever tires or wheels are changed or tire pressure has been adjusted, the TPMS must be reactivated before it can work.
  1. Turn ignition switch to OFF position.
  2. Ensure inflation pressure of all 4 tires is as specified on tire placard (located on driver's door "B" pillar or inside of fuel filler flap).
  3. Turn ignition switch to ON position. The standard display menu will appear in upper multifunction display on instrument cluster.
  4. Press up or down arrow button (located on left side of multifunction steering wheel) repeatedly until message appears in multifunction display as shown. See Fig 1.
  5. Press "+" button (located on right side of multifunction steering wheel). The multifunction display will now display "TIRE PRES. NOW OK?".
  6. To confirm system activation, press "+" button. The multifunction display will now display "TIRE PRESSURE MONITOR REACTIVATED". After a certain "learning phase", the system checks the set pressure values for all 4 tires.
    NOTE: During the learning phase, the relative rolling circumferences of the tires are taught in 6 different vehicle speed intervals (in which front left and rear right tire RPM are compared, and front right and rear left tire RPM are compared). The matching of individual intervals takes 10 minutes per interval. TPMS is not active during this learning phase.
  7. To cancel activation process, press "-" button or wait until "TIRE PRES. NOW OK? message disappears.
Fig 1: Identifying TPMS Reactivation Message
G00225502Courtesy of MERCEDES-BENZ OF NORTH AMERICA.