Selecting and activating the cruise control function
The cruise control functions have to be selected in the centre display first before they can be activated using a steering wheel button. This is applicable to the speed limiter (SL1)*, automatic speed limiter (ASL2), cruise control (CC3), adaptive cruise control* (ACC4) and Pilot Assist*.
Select the desired function with the button for cruise control functions in the centre display under Assist.
The button symbol changes depending on which function is selected and the symbol in the driver display is visible but extinguished.
When the desired function is selected – press the steering wheel button 
to activate it.
to activate it.The symbol in the driver display lights up – the function is started and the current speed is stored as the maximum speed.
If the function is set to standby mode – press the steering wheel button 
to reactivate it.
to reactivate it.The driver display's cruise control markings light up – the car then continues to follow the last speed stored.
Warning
A significant increase in speed may follow when the speed is resumed with the steering wheel button.
steering wheel button. Toggling between the speed limiter and the automatic speed limiter
When the speed limiter is selected – press the steering wheel button 
to switch to the automatic speed limiter. Press again to switch back.
to switch to the automatic speed limiter. Press again to switch back.Toggling between adaptive cruise control and Pilot Assist
When adaptive cruise control is selected – press the steering wheel button 
to switch to Pilot Assist. Press again to switch back.
to switch to Pilot Assist. Press again to switch back.Criteria
Certain criteria have to be met to be able to start any of the functions.
Speed limiter and automatic speed limiter
- The speed limiter can be activated when the car is in Drive mode.
- The lowest maximum speed that can be stored is 30 km/h (20 mph).
Cruise control
- In order to start the cruise control from the standby mode, the car's current speed must be 30 km/h (20 mph) or higher.
Adaptive cruise control
- The driver's seatbelt must be buckled and the driver's door must be closed.
- There must be a vehicle (the "target vehicle") within reasonable distance in front of the car, or the current speed must be at least 15 km/h (9 mph).
Pilot Assist
- The driver's seatbelt must be buckled and the driver's door must be closed.
- The lane's edge markings must be clear and must be detected by the car.
- There must be a vehicle (the "target vehicle") within reasonable distance in front of the car, or the current speed must be at least 15 km/h (9 mph).
- The speed must not exceed 140 km/h (87 mph).
- The driver must keep his/her hands on the steering wheel.