See also:

Buttons in the center console
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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. ...

2012 Volvo S60 Review
Before test-driving the 2012 Volvo S60, I considered Volvos to be functional cars that included cutting-edge safety features. Put another way, I thought Volvos were dutifully practical family cars ...