Auto-hold braking with Pilot Assist

Pilot Assist has a special braking function in slow traffic and at a standstill.

Braking function in slow traffic and at a standstill

In slow-moving, stop-and-go traffic or when stopped at a traffic light, driving will resume automatically if the vehicle is stopped for less than approx. 3 seconds. If it takes more than 3 seconds for the vehicle ahead to begin moving again, Pilot Assist will go into standby mode and the Auto-hold brake function will activate.

Pilot Assist can be reactivated by:
  • Pressing the P5-1507-Symbol 5x3,5-CC rattknapp Återuppta hastighet button on the steering wheel keypad.
  • Pressing the accelerator pedal.
Pilot Assist will resume following the vehicle ahead if it begins to move within approx. 6 seconds.

 Note

Pilot Assist can keep the vehicle stationary for no more than 10 minutes – after that time the parking brake is applied and the function is deactivated.

The parking brake must be released before Pilot Assist can be reactivated.

Deactivation of the Auto-hold brake function

In certain situations, Auto-hold will be deactivated when the vehicle is at a standstill and Pilot Assist will go into standby mode. This means that the brakes will be released and the vehicle could begin to roll. The driver must actively apply the brakes to keep the vehicle stationary.

This can occur if:
  • the driver depresses the brake pedal
  • the parking brake is applied
  • the gear selector is moved to the P, N or R positions
  • the driver puts Pilot Assist in standby mode.

Auto Activate Parking Brake

In certain situations, the parking brake will be applied to keep the vehicle at a standstill.

This occurs if Pilot Assist is keeping the vehicle stationary using the brakes and:
  • the driver opens the door or unbuckles his/her seat belt
  • Pilot Assist has kept the vehicle at a standstill for more than approx. 10 minutes
  • the brakes overheat
  • the driver switches off the engine manually.