2022 Volvo XC40 Your Volvo Brakes Owners Manual

Activating and deactivating the automatic brake at a standstill

Auto braking after a collision

• In the event of a collision in which the activation level is reached for the pyrotechnic seatbelt tensioners or airbags, or if a collision with a large animal is detected, the car’s brakes are automatically applied.
• This function is to prevent or reduce the effects of any subsequent collision.
• After a serious collision, there is a risk that it is no longer possible to control and steer the car. In order to avoid or mitigate a possible further collision with a vehicle or an object in the vehicle’s path, the auto braking system is activated automatically and brakes the car in a safe manner.
• Brake lights and hazard warning lights are activated during braking. When the car has stopped, the hazard warning lights continue to flash and the parking brake is applied.
• If braking is not appropriate, e.g. if there is a risk of being hit by the following traffic, the system can be overridden by the driver depressing the accelerator pedal.
• The function assumes that the brake system is intact after the collision.

Help when starting on a hill

1. Hill start assist (HSA) prevents the car from rolling backward when starting on an uphill gradient. When reversing uphill, it prevents the car from rolling forwards.
2. The function means that the pedal pressure in the brake system remains for several seconds while the driver’s foot is moved from the brake pedal to the accelerator pedal.
3. The temporary braking effect is released after several seconds or when the driver starts to drive away.
4. The Hill Start Assist is activated when stopping on a steep slope. The function is available even when the automatic braking and stationery (Auto hold) function is deactivated.

Regenerative braking

The car recovers kinetic energy during braking in order to reduce fuel consumption and emissions.

1. The battery symbol is shown in the driver display when the car is generating power for the battery.
2. The function is available in all drive modes together with gear position D or M.

Activating brake regeneration

1. Brake regeneration is activated by gentle pressure on the brake pedal or during engine braking.
2. Regeneration increases during engine braking when manual gearshift mode M is selected.

Low-speed control

1. The low-speed control function (LSC) facilitates and improves traction for driving off-road and on slippery surfaces, such as with a caravan on grass or a boat trailer on a launch ramp.
2. In a car with a drive mode button, the function is included in the Off-Road drive mode.
3. The function is adapted for off-road driving and driving with a trailer at low speed, up to approx. 40 km/h (25 mph).
4. Low-speed control prioritizes low gears and traction. If the car is all-wheel drive, the motive force is distributed evenly in order to provide as good traction as possible on all wheels and to reduce the risk of wheel spin. The accelerator pedal is less responsive in order to facilitate traction and speed control at low speed.
5. The function is activated together with hill descent control, (HDC) which means that speed down steep hills can be controlled with the accelerator pedal, reducing the need to use the brake pedal.
6. The system facilitates a low and even speed while driving on steep downhill gradients.

Note
When LSC with HDC is activated, the feel of the accelerator pedal and engine response is changed.

Note
The driving mode is not designed to be used on public roads.
Note
The function is deactivated when driving at higher speeds and must be reactivated at a lower speed if required.

Hill descent control

Hill descent control (HDC) is a low-speed function with enhanced engine braking. The function makes it possible to increase or reduce the car’s speed on steep downhill gradients using only the accelerator pedal, without using the foot brake.
In a car with a drive mode button, the function is included in the Off-Road drive mode.
Hill descent control is adapted for off-road driving at low speeds and facilitates driving on steep downhill gradients with difficult surfaces. The driver does not need to use the brake pedal, but can instead focus on steering.

Warning
HDC does not work in all situations but is designed merely as a supplementary aid.
The driver always bears ultimate responsibility for ensuring that the vehicle is driven safely.

Function

Hill descent control allows the car to roll at inching speed both forward and backward, assisted by the brake system. The speed can be increased by using the accelerator pedal. When the accelerator pedal is then released the car slows back down to crawling speed, regardless of the gradient of the hill, and without the need for the foot, brake to be used. The brake lights are switched on when the function is operating. The driver can brake and reduce crawling speed, or stop the car at any time by using the foot brake. The function is activated together with low-speed control (LSC) which facilitates driving and improves traction for driving off-road and on slippery surfaces. The systems are designed for use at low speed, up to approx. 40 km/h (25 mph).

Points to remember when driving with HDC

• If the function is disabled while driving on a steep downhill gradient, the braking effect will gradually decrease.

With automatic gearbox

• HDC can be used in gear position D, R, and with 1st or 2nd gear with manual gear changing.
• It is not possible to change to 3rd gear or higher with manual gear changing.

With manual gearbox

• HDC only brakes in 1st gear or with reverse gear (R). There is no active braking in higher gears even though the function is not deactivated until approx. 40 km/h (25 mph).

Note
When LSC with HDC is activated, the feel of the accelerator pedal and engine response is changed.

Note
The driving mode is not designed to be used on public roads.

Note
The function is deactivated when driving at higher speeds and must be reactivated at a lower speed if required.