Volvo XC90: Battery drain - STARTING AND DRIVINGVolvo XC90: Battery drain

The electrical functions in the vehicle drain the battery to varying degrees. Avoid using ignition mode II when the engine is switched off. Use ignition mode I instead, as this uses less electrical current.

Note that certain accessories may also drain power from the electrical system. Do not use functions that use a lot of electrical current when the engine is turned off. Examples of such functions are:

  • blower
  • headlights
  • windshield wipers
  • audio system (especially at high volume).

If the starter battery voltage is low, a message is shown in the driver display. The vehicle's energy-saving function will then turn off or reduce certain functions, such as the blower and/or the audio system.

  • To charge the battery, start the engine and let it run for at least 15 minutes (driving charges the battery faster than letting the engine idle).
Overheating of engine and transmission
In certain driving conditions, such as driving in mountainous areas or hot weather, there is a risk of the engine or transmission overheating, especially when carrying heavy loads. Engine power may be ...

Jump starting using another battery
If the start battery is discharged, current from another battery can be used to start the vehicle. Jumper cable connecting points. Engine compartment appearance may vary depending on vehicle model and ...

See also:

Audio system
✽ NOTICE If you install an aftermarket HID headlamp, your vehicle's audio and electronic device may malfunction. ...

Activating and deactivating the parking brake
Use the parking brake to help keep the vehicle stationary when it is parked. Activating the parking brake Pull up the control. The symbol in the instrument panel will illuminate when the parking brake ...

Cross Traffic Alert limitations
(* Option/accessory.) (Warning for crossing traffic when the vehicle is backing up.) The Cross Traffic Alert (CTA) function with auto brake may have limited functionality in certain situations. Auto-brake ...