See also:

Low battery voltage
If the battery voltage is too low, the parking brake cannot be applied or released. Connect an auxiliary battery if the battery voltage is too low, see page 114. ...

Spots on interior plastic, metal, or wood surfaces
Cleaning interior plastic components should be done with a cleaning agent specially designed for this purpose. Consult your Volvo retailer. ...

Handling
• Check that the battery cables are correctly connected and tightened. • Never disconnect the battery when the engine is running (for example, when replacing the battery). • If the battery is ...