Tire Pressure Monitoring System, System Description: Notes

Function: 

The tire pressure monitoring system is controlled using the Multimedia System Control Head -E380-, which is installed in the center console.

The system monitors the tire pressure that was set for monitoring in each of the four tires.

-- The tire pressure must be checked, corrected and saved via the Multimedia System Control Head -E380- under the menu items "CAR", "Systems" and "Tire Pressure Monitoring".

-- Then check and correct the tire pressure for the tires on the vehicle (including spare tire) according to the specifications on the sticker on the fuel filler flap or B-pillar.

Tire Pressure Monitoring Active 

If the tire pressure monitoring system detects a loss of pressure in one or more tires, this is indicated to the driver by the tire pressure warning light illuminating in the instrument cluster. A tire pressure warning symbol with the text "Check tire pressure" also appears in the instrument cluster driver information system. In this case, the tire pressures must be checked (according to the specifications on the label on the fuel tank door/B-pillar). If the tire pressure is very different in one or more tires, check that tire for damage or foreign objects. Replace the tire if necessary. Refer to TIRES, CHANGING, VEHICLES WITH TIRE PRESSURE MONITORING SYSTEM .

-- If the cause of the tire pressure warning is resolved: correct and store the tire pressures in the Multimedia System Control Head -E380-.

Fault in the TPMS 

A system malfunction is stored in the Tire Pressure Monitoring Control Module -J502- DTC memory. If a malfunction occurs or there is already one present, this is indicated when the ignition is switched on by the yellow malfunction lamp in the instrument cluster blinking for 1 minute and then staying on. The yellow warning lamp cannot be switched off by pressing the Multimedia System Control Head -E380- button in the center console. Except in the case that 1 - 4 Tire Pressure Monitoring Sensors -- recognized, the pressures were not stored. Moreover, the "TPMS" warning lamp in the instrument cluster comes on and "Tire Pressure System Fault". If there is a DTC memory entry, connect the Vehicle Diagnostic Tester and select "Guided Fault Finding". Refer to Vehicle Diagnostic Tester.