Volvo XC90: Starting and driving / 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).
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...
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 equipment level...
Other information:
Sensus makes it possible to use apps and turn your vehicle into a Wi-Fi hotspot.
This is Sensus
Sensus provides an intelligent interface and Internet connection to the digital
world. An intuitive navigation structure offers access to relevant assistance, information
and entertainment when it is needed, without distracting the driver...
(Option/accessory)
The Road Sign Information (RSI1) function can help the driver observe
speed-related road signs.
Examples of signs that can be detected2.
If the vehicle passes a speed limit sign, it will be displayed in the instrument
panel and the head-up display*...