Runflat indicator: Operation
The Run Flat Indicator (RPA) is initialized using the following control elements:
- RPA button
- On-board computer button on turn-signal/main-beam switch
- With iDrive in the Central Information Display (CID) with the controller
Set the tires to the correct pressure before performing initialization. During initialization, the set tire pressure is taken as the initial value for the current set of wheels.
Correct the tire pressures when the tires are cold to prevent the data recorded from being affected by temperature.
Check tire pressures regularly, at least twice a month and before embarking on lengthy journeys. During initialization, the set tire pressure is taken as the initial value for the current set of tires.
Initialize the RPA in the following situations:
- If tire pressure is changed
(tire pressure is corrected or reset)
- If the position of the tires is changed (change of axles, wheels), even if the tire pressure is not changed
- If a tire is changed or the wheels are interchanged
(e.g. old tires for new tires, summer tires for winter tires, etc.)
Start initialization as follows:
- Terminal 15 ON
(engine OFF or ON, do not pull away)
- Vehicles with
RPA button
- Press and hold the RPA button until the RPA indicator and warning light lights up yellow for a few seconds
- Vehicles with
BC button (on-board computer function)
- In the on-board computer function select "RPA" and "INIT" (LCD display) with the rocker switch on the turn-signal/main-beam switch. Press the BC button to confirm.
- Press and hold the BC button for approx. 5 seconds, until a box with a tick appears behind the "INIT" display.
- Vehicles with Central Information Display
Initialization is performed via the Central Information Display (CID) and controller.
- Select "RPA" in the "Settings" menu and confirm.
- Select "Set" and confirm.
- Drive off
The end of the initialization phase is not indicated.
Preconditions For Activation
The Run Flat Indicator (RPA) is automatically activated when terminal 15 is switched ON. The RPA cannot be switched off manually.