Driving -> Hill Descent Control for Your Aston Martin Dbx SUV 2020

Hill Descent Control (HDC)  
Deactivating ACC or Variable Speed Limiter  
Warning: Hill Descent Control is an aid only and does not  
replace the need for driver awareness. It is the driver's  
responsibility to be aware of their surroundings. Always  
make sure that there is a suitable distance to the side of your  
vehicle for other road users and obstacles.  
Press the CAN button (3) to deactivate ACC or variable speed  
limiter.  
The ACC and variable speed limiter set speeds will also be  
cleared when the ignition is set to OFF.  
ACC will automatically deactivate when:  
Warning: If there is a difference in speed between the set  
speed and actual speed when HDC is activated on a slippery  
road surface, it is possible the wheels can lose traction. This  
can increase the risk of the vehicle skidding and having an  
accident. Be aware of the road surface conditions before  
activating the HDC system.  
• The brake pedal is pressed.  
• The park brake is applied.  
• Vehicle speed drops below 20 km/h (13 mph).  
• Neutral, Park or Reverse gear positions are selected.  
• The traction control system is activated.  
• The variable speed limiter system is activated.  
• A fault occurs in the ACC system. The system will not operate  
until the fault is cleared.  
Active Cruise Control and Active Brake Assist are disabled  
when HDC is active.  
HDC is intended to be used with All-Season tires (Refer to ’All  
Season Tires’, page 11.18).  
Hill Descent Control (HDC) uses the ABS system to control the  
speed of the vehicle on downhill roads and terrain. The braking  
effect used by the HDC system increase as the downhill gradient  
becomes steeper. HDC will only operate with the transmission in  
D (Drive), R (Reverse) and only in GT, Terrain and Terrain+  
modes.  
5.14 Driving  
To Activate HDC  
Setting A Speed  
To activate the HDC system, press the HDC button (A).  
Lightly push the speed selector switch (B) up to increase speed,  
or down to decrease speed in 1 km/h (1 mph) increments.  
Pressing the switch in either direction will set a new vehicle speed  
in the cruise control or new vehicle speed limit.  
HDC will set a vehicle speed of between 2 km/h (2 mph) and  
40 km/h (25 mph).  
Deactivating HDC  
HDC will be deactivated when the drive mode is changed to  
Sport, Sport+ or when the HDC button is pressed.  
HDC will deactivate automatically if vehicle speed exceeds  
45 km/h (28 mph).  
A warning symbol will be shown with the target set speed when  
the system is active.  
If the brake pedal is pressed, this will automatically override the  
braking function of the HDC system. When the brake pedal is  
released, HDC will resume control of the braking when  
necessary.  
Driving 5.15