Cruise Control with brake function.
As an option, the new BMW X5 is also available with cruise control incorporating a special brake application function. The big advantage of this system is that it does not only maintain the speed preselected by the driver, but also reduces road speed whenever necessary under specific driving conditions.
Cutting in as of 30 km/h or 20 mph, cruise control with its brake function serves to maintain the speed preselected by the driver at all times, regardless of the route he is taking. To do this, the system either increases engine power automatically or, by cutting off engine power and shifting down the transmission, uses the brake force of the engine to reduce speed.
Should this reduction of speed not be sufficient, say, when driving downhill or towing a trailer, the system intervenes additionally in the brakes. This advanced system of cruise control complete with its brake function comes in addition with a Curve Speed Limiter reducing the speed of the vehicle in bends to a lower level than desired whenever this is necessary on account of dynamic driving conditions. To determine when this necessity arises, the Curve Speed Limiter covers lateral acceleration data provided by the sensors, adjusting the speed of the vehicle whenever driving conditions become critical. Then the Curve Speed Limiter accelerates the BMW X5 again to the desired speed when leaving the bend.
The driver masterminds the cruise control function by means of a stalk on the steering column. As soon as the vehicle reaches the minimum speed required of 30 km/h, therefore, all the driver has to do is pull or press the control stalk to adopt his current speed at the desired level and then change such speed whenever he wishes.
Cruise control with its brake function is deactivated either via the control stalk or by pressing down the brake pedal. Then, pressing the Resume button, the driver is able to activate the system again at the final speed saved in the system.
The Comfort Dynamic function enables the driver to use the control stalk for accelerating in the handgas mode, increasing the speed of the vehicle whenever he wishes in two dynamic stages and in an absolutely constant process, without pressing down the gas pedal.