Automatic Hold button (only F25)
The "Automatic Hold" button is integrated within the parking brake button. The "Automatic Hold" button is electrically connected to the DSC control unit.
The "Automatic Hold" function supports the driver by automatically applying and then releasing the brakes, for instance, in stop-and-go traffic. At a standstill, the vehicle is automatically and continuously held hydraulically via the DSC (difference to the drive-off assistant by approximately 2 seconds). On slopes, the vehicle cannot roll back when driving off.
The EMF electromechanical parking brake must be installed for "Automatic Hold". This should not be confused with the drive-off assistant (see SYSTEM FUNCTIONS ).
A switch from hydraulic to mechanical retention is executed under the following conditions:
- The engine is turned off
- A door is opened and the driver takes off his/her seat belt.
- During a journey, the vehicle is braked to a standstill using the parking brake.
Shown F25
| Item | Explanation |
|---|---|
| 1 | Parking brake button |
| 2 | Function indicator light |
| 3 | Automatic Hold button with function indicator light |
| 4 | 12-pin plug connection |
The DSC receives additional input signals from the following components: