See also:

Warning symbols on the battery
NOTE A used battery should be disposed of in an environmentally responsible manner. Consult your Volvo retailer or take the battery to a recycling station. Handling Check that the bat ...

Replacing the batteries
CAUTION When handling batteries, avoid touching their contact surfaces as this could result in poor battery function in the remote key. 3 Note the position of the battery's (+) or (–) sides. ...

Limitations
Strong sunlight, reflections, extreme light contrasts, the use of sunglasses, or if the driver is not looking straight ahead may make the visual warning signal in the windshield difficult to see ...