In case of a failure in the tire pressure monitoring or a low tire pressure, a warning light will be activated in the combined instrument.
If the warning light is red it means that a tire pressure deviation greater than 30% has been detected.
If the warning light is yellow it means that a failure has been detected in the tire pressure monitoring.
In both cases a basic setting of the tire pressure monitoring should be performed.
Always perform a basic setting of the tire pressure monitoring immediately after the tire pressure has been changed or the wheels have been replaced. The tires must be cold when checking the tire pressure.
A basic setting of the tire pressure monitoring should always be performed after the following jobs:
If tire pressure has been changed.
If the wheels are switched from one side to the other or between wheel axles, even if the tire pressure has not been changed.
If one or several tires have been replaced.
To perform a basic setting, first the system must be initiated to erase old calibration data and to prepare for new values. After the initiation process has been started, it cannot be cancelled before calibration of tire pressure monitoring is finished. It is important that the vehicle is driven off immediately after initiation has started, the calibration process starts when the vehicle has reached a speed of 25 km/h. Basic setting takes between 5 and 15 minutes to perform, and you do not receive an indication that it is finished. If basic setting does not finish during the first driving cycle it will be resumed and finished during the next driving cycle.
Test conditions:
Ignition on, engine off.
Access to a stretch of road that fulfils the conditions set out below.
Procedure:
For vehicles equipped with "RPA"-button for tire pressure monitoring (E46, E53, E83, E85, E86).
Press and hold in the "RPA"-button until the indicator light in the combination instrument turns yellow for a few seconds.
Start the car and drive off.
The calibration process starts when the vehicle has reached a speed of 25 km/h and takes between 5 and 15 minutes.
For vehicles not equipped with central information display (CID) the initiation is performed via the BC button on the direction indicator stalk (E87, E88, E90, E91, E92, E93).
Use the rocker-switch on the direction indicator stalk to access "RPA" and "INIT" in the combination instrument's LCD display, press the "BC"-button to confirm.
Press and hold in the "BC"-button for approx. 5 seconds until a small marked square appears in the "INIT" display.
Start the car and drive off.
The calibration process starts when the vehicle has reached a speed of 25 km/h and takes between 5 and 15 minutes.
For vehicles equipped with central information display (CID) the initiation is performed via the "iDrive"-controller (E87, E88, E90, E91, E92, E93, E60, E61, E65, E66).
Start from the basic menu in the information display.
Go to "Info" by pressing down the "iDrive controller" once.
Then turn the "iDrive controller" to "Vehicle settings" and press down the "iDrive controller" once.
Press the "iDrive controller" forward in the driving direction once to go to the upper menu.
Then turn the "iDrive controller" to "RPA" and press down the "iDrive controller" once.
Choose "set" and confirm by pressing down the "iDrive"-controller once.
Start the car and drive off.
The calibration process starts when the vehicle has reached a speed of 25 km/h and takes between 5 and 15 minutes.