Tire Pressure Control Indicator, Performing Basic Setting

Tire Pressure Monitoring System, Performing Basic Setting

NOTE: Basic setting of Tire Pressure Monitoring Display Indicator Lamp K220 should always only be performed, "after" tire inflation pressure values have first been corrected to the proper values.
If no pressure loss and no tire damage is detected after a tire pressure warning, the erroneous warning can be eliminated by a basic setting.

Tire Pressure Monitory System display is a component of ABS Control Module -J104- software.

ABS Control Module compares speed and rolling circumference of individual wheels with help of ABS sensors. If rolling circumference of a wheel changes, this is displayed via tire pressure control indicator. Rolling circumference of tire may be change if:
- Tire inflation pressure is too low.
- Tires have structural damage.
- Vehicle is loaded on one side.
- Wheels of one axle are loaded higher (e.g. when towing trailer or driving uphill and downhill).
- Snow chains are installed.
- Spare wheel is installed.
- One wheel per axle was replaced.






If the ASR/ESP control lamp -K155- or the traction control indicator lamp -K86- indicate a malfunction in the ABS system, then the tire pressure monitoring display indicator -ARROW- will also illuminate. A malfunction in the tire pressure monitoring system has not been stored.

Indicator lamp cannot be turned off by pressing tire pressure monitoring display button -E492-. In this case, perform the following steps:

- Connect vehicle diagnosis, testing and information system -VAS 5051- and select Guided Fault Finding.

- Suspension
- Brake System
- On Board Diagnostic
- Anti-Lock Brake System ABS/ASR Mark 70 or
- Anti-Lock Brake System ABS/EDS/ASR/ESP Mark 60 EC
- Function
- General Function
- Tire Pressure Monitoring System/ Tire Pressure Warning.


Performing "INITIAL" basic setting
- Switch ignition on.
- The vehicle must be standing and the parking brake must be set.






- Push the -SET- button inside the glove compartment until the signal tone sounds.

The signal tone confirms the basic setting.