Automatic braking with driver support

Updated 19/03/2020

Pilot Assist and adaptive cruise control* (ACC1) have a special brake function in slow traffic and while stationary.

Brake function in slow queues and while stationary

For shorter stops in connection with inching in slow traffic or at traffic lights, driving is automatically resumed if the stops do not exceed approx. 3 seconds - if it takes longer before the vehicle in front starts moving again then the driver support function is set in standby mode with automatic braking.

The function is reactivated in one of the following ways:

Press the steering wheel button .
Depress the accelerator pedal.

The function resumes following the vehicle ahead if it starts moving forward within approx. 6 seconds.

Note

The driver supports can hold the car stationary for a maximum of 10 minutes – then the parking brake is applied and the function is disengaged.

Before the driver supports can be reactivated, the parking brake must be released.

Cessation of automatic braking

In some situations, automatic braking ceases on coming to a standstill and the function is set in standby mode. This means that the brakes are released and the car may start to roll - the driver must therefore intervene and brake the car himself/herself to keep it stationary.

This may take place in the following situations:

the driver puts his/her foot on the brake pedal
the parking brake is applied
the gear selector is moved to P, N, or R position
the driver sets the function in the standby mode.

Automatic activation of parking brake

In certain situations, the parking brake is applied in order to keep the car stationary.

This takes place if the function is holding the car stationary with the foot brake and:

the driver opens the door or takes off his/her seatbelt
the function has kept the car stationary for more than approx. 10 minutes
the brakes have overheated
the driver switches the engine off manually.