Battery drain
Using a lot of electrical current without allowing the vehicle to charge the start battery results in a low battery level and some electrical functions will be reduced or switched off. If the battery level drops below a certain level, it will no longer be possible to start the vehicle without jump-starting or charging of the start battery with an external charger.
Several measures can be taken to reduce power consumption. Avoid using ignition mode II when the engine is switched off. Instead, use ignition mode I, which uses less electrical current. Do not use functions that use a lot of electrical current when the vehicle is not being driven. Examples of such functions are:
- blower
- headlights
- windshield wipers
- audio system
- accessories plugged into the vehicle.
If the battery level is low, a message is shown in the instrument panel. The vehicle's energy-saving function will then turn off or reduce certain functions, such as the blower and the audio system.
Charge the start battery by starting the vehicle and letting it run for at least 15 minutes. The start battery is charged more effectively while driving than while idling.
If the battery level is still low after taking these measures, the vehicle should be checked by a workshop – an authorized Volvo workshop is recommended.
Note
High current consumption can lead to low battery level, which temporarily limits the start/stop function. The engine can then start automatically during a stop to charge the battery.