Volvo XC90 2015-2022 Owners Manual / Starting and driving / Conditions for the Start/Stop function

Volvo XC90: Starting and driving / Conditions for the Start/Stop function

Certain conditions must be met for Start/Stop to function.

If any condition is not met, this will be indicated in the instrument panel.

The engine does not auto-stop

The engine will not auto-stop if:

  • The vehicle has not reached a speed of ca 10 km/h (6 mph) after starting.
  • After several auto-stops, the speed must again exceed approximately ca 10 km/h (6 mph) before the next auto-stop.
  • The driver has not fastened the seatbelt.
  • The engine is not running at its normal operating temperature.
  • The ambient temperature is under approximately -5 °C (23 °F) or over approximately 30 °C (86 °F).
  • Windshield heating is activated.
  • The climate system settings and the actual climate in the passenger compartment differ.
  • The vehicle is in reverse.
  • The driver is making large steering wheel movements.
  • The road gradient is very steep.
  • The hood is open.
  • Driving at high altitude and the engine has not reached its normal operating temperature.
  • ABS has been activated.
  • Hard braking (even if the ABS system has not been activated).
  • Many starts during a short period of time have triggered the starter motor's overheating protection.
  • The exhaust system's particulate filter is full.
  • A trailer is connected to the vehicle's electrical system.
  • The transmission is not running at its normal operating temperature.
  • The gear selector is in mode M (±).
  • If traffic conditions allow it (for example in a traffic jam).

The engine does not auto-start

The engine will not auto-start after an autostop if:

The driver is not wearing a seat belt, the gear selector is in the P position and the driver's door is open. The engine must be started normally.

The engine auto-starts while the brake pedal is depressed

In the following situations, the engine will auto-start even if the brake pedal is depressed:

  • High levels of condensation on the inside of the windows.
  • The climate system settings and the actual climate in the passenger compartment differ.
  • The brake pedal is pumped repeatedly.
  • The hood is open.
  • The vehicle begins to roll or increases speed slightly if the engine auto-stopped before the vehicle was at a standstill.
  • The driver's seat belt is unbuckled with the gear selector in the D or N positions.
  • The gear selector is moved from D to R or M (±).
  • The driver's door is opened with the gear selector in D. An audible signal and a text message informs the driver that the ignition is on.


Do not open the hood if the engine has auto-stopped. Turn off the engine by switching off the ignition before lifting the hood.

    Deactivating the Start/Stop function

    In certain situations, it may be advisable to turn the Start/Stop function off. To turn off Start/Stop, tap the Start/Stop function button in the center display's Function view...

    Leveling control and suspension

    (Option/accessory.) The vehicle's leveling control system adjusts the suspension and shock absorbers automatically to help optimize comfort and control while driving...

    Other information:

    Volvo XC90 2015-2022 Owners Manual: City Safety sub-functions

    City Safety1 can help prevent a collision or lower the vehicle's speed at the point of impact. The function consists of several subfunctions. Ability to reduce speed If the difference in speed between your vehicle and the obstacle is greater than the speeds specified below, the City Safety auto-brake function cannot prevent a collision, but it can help mitigate its effects...

    Volvo XC90 2015-2022 Owners Manual: Trailer Stability Assist

    (Option/accessory.) Trailer Stability Assist (TSA1) is part of the ESC2 stability system and is a function designed to help stabilize a vehicle that is towing a trailer when the vehicle and trailer have begun to sway. The function is added when installing a towbar...


      Distance Alert


      The Distance Alert function can help the driver become aware if the time interval to the vehicle in front is too short. The vehicle must be equipped with a head-up display* in order to display Distance Alert.

      Volvo XC90. Distance Alert

      Symbol for Distance Alert on the windshield with head-up display

      read more

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