2023 Volvo XC40 Mild Hybrid Start Stop function Owners Manual

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1 2023 Volvo XC40 Mild Hybrid Start-Stop function

2 Start-stop function

2.1 Points to remember when using the start/stop function

3 Activating and deactivating the start/stop function

3.1 Activating the start/stop function

3.2 Deactivating the start/stop function

3.3 Symbols in the driver display

4 Freewheel function with the engine switched off

4.1 Activating the freewheel function

4.2 Deactivating the freewheel function

4.3 Indication in the driver display

2023 Volvo XC40 Mild Hybrid Start-Stop function

Start-stop function

With the start/stop function, the engine switches off temporarily when the car has stopped e.g. at traffic lights or in a traffic queue and then starts again when it is needed.

The start/stop function reduces fuel consumption, which in turn can contribute to an environmentally conscious driving style and reduced emissions.

Points to remember when using the start/stop function

For the start/stop function to work requires that a number of conditions are met.

The start/stop function is not activated
One or more criteria may mean that the engine is not switched off/the function is not activated.

the driver has not fastened the seatbelt
the car has not been able to reach a speed of approx. 10 km/h (6 mph) after starting or the function has been activated a number of times successively
the engine has not reached normal operating temperature
the windscreen’s electric heating is activated
the environment in the passenger compartment deviates from the set values
the driver is making large steering wheel movements
the road is very steep
the bonnet is opened
the ABS system has been activated
in the event of heavy braking (even without the ABS system having been activated)
the capacity of the starter battery has fallen below the minimum permissible level
many starts during a short period of time have activated the starter motor’s thermal protection
the exhaust system’s particulate filter is full
a trailer is connected to the car’s electrical system.

Note
High current take-off may lead to battery capacity falling below the lowest permitted level, which temporarily limits the start/stop function. The engine then starts automatically without the driver lifting his/her foot from the brake pedal.

The start/stop function is not deactivated
One or more criteria may mean that the engine is not started/the function is not deactivated.

the driver has not fastened the seatbelt
gear position P is engaged and the driver door is open.

The start/stop function is deactivated without the brake pedal being released
In the following cases, the function may be deactivated and the engine started without the driver releasing the brake pedal:

high humidity in the passenger compartment forms misting on the windows
the environment in the passenger compartment deviates from the set values
repeated pumping of the brake pedal
the bonnet is opened
the capacity of the starter battery has fallen below the minimum permissible level
the driver’s seatbelt is unbuckled and the gear selector is in position D or N
the gear selector is moved from position D to position R or M
the driver door is opened with the gear selector in position D.

Warning
Do not open the bonnet when the start/stop function is active. Switch off the engine normally before raising the bonnet.

Activating and deactivating the start/stop function

The start/stop function is available when the car is started. When the function is activated, the engine is switched off temporarily. The engine then starts automatically when the function is deactivated or when the car requires this.

Activating the start/stop function

Depress and hold the brake pedal depressed. The start/stop function is activated and the engine is switched off.

Note

In some cases, the start/stop function is activated before the car is completely stationary.
When adaptive cruise control or Pilot Assist is activated, the start/stop function is activated for a few seconds after the car is completely stationary.

All of the car’s normal systems, such as lighting and radio, work normally even when the start/stop function is activated. However, some equipment may have temporarily reduced function, such as the climate control’s fan speed or loudspeaker volume.

Deactivating the start/stop function

Release the brake pedal or gently depress the accelerator pedal. The start/stop function is deactivated and the engine starts.

Note
When the start/stop function is deactivated and:

the function for automatic braking when stationary (Auto hold) is activated, the start of the engine is delayed until the accelerator pedal is depressed
adaptive cruise control or Pilot Assist is activated, the engine starts when the accelerator pedal is depressed or by pressing the button on the left-hand steering wheel keypad
the car is facing uphill, hill start assists (HSA) engages to prevent the car from rolling backward
the car is facing downhill, release the brake pedal slightly. A small increase in speed starts the engine.

Symbols in the driver display

The driver display’s tachometer indicates when the start/stop function is available, active or unavailable.

Symbol	Specification
	White – the function is available.
	Green – the function is activated.
	Grey – the function is not available.

If no symbol is shown in the driver display, the function is disabled.

Freewheel function with the engine switched off

When the freewheel function is active, the engine may be switched off temporarily at higher speeds. The function can contribute to reduced fuel consumption.

Activating the freewheel function

The car needs to reach a speed of 45 km/h (27 mph) or higher.
Release the accelerator pedal.
The engine switched is off and the car rolls freely.

Note
If the freewheel function is not activated, it may be blocked by the car’s functions, such as the climate system, or by insufficient distance to vehicles ahead, for example.

Deactivating the freewheel function

Proceed with one of the following

Depress the accelerator pedal.
Activate cruise control.
Change to manual gear mode.

The engine starts.

Indication in the driver display

Symbol	Specification
	White – the function is available.
	Green – the function is activated.
	Grey – the function is not available.