Hill Start

Hill Start

The vehicle may be equipped with hill start depending on the model.

Function

The function assists the driver if the vehicle must remain stopped frequently or for long periods of time when the engine is running.

The hill start holds the vehicle after the vehicle has been standing and this function is activated.

The driver can release the brake pedal.

The vehicle is held in place by maintaining the brake pressure on all four wheels in ESP.

To prevent the ESP solenoid valves to overheat when stopped for long periods of time, the rear electromechanical parking brake automatically takes over braking when the solenoid valves reach a temperature of 200° C.

The point when the brakes automatically release is based on the following information:

• Engine speed.

• Angle.

• Gear engaged.

• With manual transmissions, distance on the clutch pedal through the clutch sensor.

• With automatic transmissions, through converter release.

To prevent the vehicle from rolling back, the brakes are only released when there is sufficient engine torque.

Activation

The following conditions must be fulfilled to switch the "stand by" function on:



• Driver wearing seat belt.

• Engine running.

• Driver door closed.

• ESP and electromechanical parking brake without malfunction.

The -AUTO HOLD- button (E540) - B - in the center console activates this function.






The switch indicates the operating conditions.

• Deactivated - the LED in the switch is off.

• Stand by, the LED inside the switch is on.

• Active - the LED in the switch is on and the instrument cluster display shows a green "P".

Braking function is only transferred from ESP to the electromechanical parking brake if the "green P" in the instrument cluster is visible and if:

• The solenoid valves in ESP have reached a temperature of 200° C.

• The driver door is opened.

• The driver seat belt is unlatched.

• The engine is stopped.

• The ignition is switched off.

• The brake pedal or gas pedal are pressed.

• The -AUTO HOLD- button (E540) is working without having to use the foot brake.

• When braking function is transferred from the ESP to the electromechanical parking brake, the instrument cluster display changes from a "green P" to a "red P".