S90 Twin Engine Managing Cruise Control speed

Setting/changing set speed

P5-1507-CC rattknappar-1 — Note: This illustration is general and details may vary depending on model.

For vehicles with only CC

Change a set speed by pressing the P5-1507-Symbol 5x3,5-CC rattknapp +

(1) or

Px-1717-Symbol 5x3,5-Rattknapp – (minus)

(3) buttons briefly or by pressing and holding them:

Press briefly: Press briefly: each press changes the speed in +/- 1 mph (+/- 1 km/h) increments.
Press and hold: Release the button when the set speed indicator (4) has moved to the desired speed.

The most recently set speed will be stored.

If speed is increased by depressing the accelerator pedal while pressing the P5-1507-Symbol 5x3,5-CC rattknapp + (1) button on the steering wheel, the vehicle's speed when the button is pressed will be stored as the set speed.

Temporarily increasing speed using the accelerator pedal, e.g. when passing another vehicle, will not affect the setting. The vehicle will return to the set speed when the accelerator pedal is released.

For vehicles with both CC and ACC

Change a set speed by pressing the P5-1507-Symbol 5x3,5-CC rattknapp +

(1) or

(3) buttons briefly or by pressing and holding them:

Press briefly: Press briefly: each press changes the speed in +/- 5 mph (+/- 5 km/h) increments.
Press and hold: Release the button when the set speed indicator (4) has moved to the desired speed.

The most recently set speed will be stored.

If speed is increased by depressing the accelerator pedal while pressing the P5-1507-Symbol 5x3,5-CC rattknapp + (1) button on the steering wheel, the vehicle's speed when the button is pressed will be stored as the set speed.

Temporarily increasing speed using the accelerator pedal, e.g. when passing another vehicle, will not affect the setting. The vehicle will return to the set speed when the accelerator pedal is released.

Using engine braking instead of applying the brakes

Cruise Control regulates speed by lightly applying the brakes. On downgrades, it can sometimes be desirable to roll a bit faster and let speed be reduced instead by engine braking alone. The driver can temporarily disengage the Cruise Control braking function.

To disengage CC:

Press the accelerator pedal about halfway down and then release it.

Cruise Control will automatically disengage the automatic brake function and speed will only be reduced using the engine braking function.

How drive mode affects cruise control

The way the cruise control maintains the vehicle's speed can vary depending on the selected drive mode2.

Cruise Control Eco Cruise

In the ECO drive mode, cruise control's acceleration and deceleration will be smoother than in other drive modes to help provide optimal fuel efficiency and reduced environmental impact. Because of this, the vehicle's actual speed may be slightly above or below the set speed.

Cruise Control Dynamic Cruise

With the Dynamic drive mode, cruise control's acceleration and deceleration will be faster and more immediate than in other drive modes.