Volvo XC90: Starting and driving / Activating and deactivating Hill Descent Control using the function button
(Option/accessory.)
There is a function button for assistance on steep gradients with Hill
Descent Control in the center display's Function view if the vehicle is not
equipped with a drive mode control in the tunnel console.
Selecting Hill Descent Control in the center display's Function view
HDC only works at low speeds.
- Tap the Hill Descent Control button to activate or deactivate the function.

- An indicator light in the button will illuminate when the function is
activated.
When the engine is switched off, the function will be automatically deactivated.
NOTE
The function is deactivated when driving at high speeds and must be reactivated
at lower speeds if so desired.
(Option/accessory.)
The function for assisting when driving downhill (HDC1) is a low-speed
function with increased engine braking. The function makes it possible to increase
or decrease the vehicle's speed on steep downhill gradients by only using the accelerator
pedal, without applying the brakes...
A more economical driving style can help lower fuel consumption.
Before driving
If possible, precondition the vehicle before driving.
If preconditioning is not possible when it is cold outside, use seat and
steering wheel heating first...
Other information:
(Option/accessory)
(Depending on market, this function can be either standard or
optional.)
A summary of how Adaptive Cruise Control (ACC1 ) is controlled
using the left-side steering wheel keypad and how the function is shown in the display.
: From standby mode - activates
and sets the current speed
: From active mode - deactivates/puts
in standby mode
: Activates the function from sta..
The transmission is part of the vehicle's driveline (power transmission) between
the engine and the drive wheels. The function of the transmission is to change gears
depending on speed and power needs.
The vehicle has an 8-speed automatic transmission. The number of gears allows
the engine's torque and power band to be effectively utilized.
Two of the gears are overdrive gears that save fuel wh..