Electro-Mechanical Parking Brake Button
The parking brake is an automated electro-mechanical parking brake system (EMF) introduced for the first time on the E65.
When the engine is running, the parking brake system operates the front and rear disc brakes via the brake hydraulics. When the engine is switched off, the parking brake is operated by an electro-mechanical system. Two cables are then used to actuate the rear parking brake drums.
When the vehicle is stationary with the ignition switched on, the parking brake is applied or released by pressing the button.
The parking brake can also be applied with the ignition switched off. The indicator lamp on the instrument cluster lights up briefly.
The parking brake can only be released when the ignition is switched on.
In an emergency, (e.g. if the brake pedal is jammed by an object), the parking brake can also be used as a dynamic emergency brake when the vehicle is in motion.
The vehicle is then braked by means of the brake hydraulics and the front and rear disc brakes as long as the parking brake button is pressed.
Automatic application of the parking brake, e.g. in stop-and-go traffic or when performing a hill start (Automatic Hold), can be activated/deactivated on the Control Display ("Settings" menu) using the Controller. Automatic Hold is a key memory function.
If automatic application is activated, "Auto P" appears on the instrument cluster.
If the parking brake is released by pressing the button when the engine is running, this also deactivates the automatic application function.