Demanding driving

In demanding driving conditions, such as operating the vehicle in hot weather, towing a trailer, or driving for extended periods at higher altitudes than normal, it may be advisable to switch to higher octane fuel (91 or higher) or to change gasoline brands to fully utilize your engine's capacity, and for the smoothest possible operation.
NOTE
When switching to higher octane fuel or changing gasoline brands, it may be necessary to fill the tank more than once before a difference in engine operation is noticeable.
See also:
The alarm indicator light
The status of the alarm system is indicated by the red indicator light on the
dashboard (see illustration):
Indicator light off – the alarm is not armed
The indicator light flashes at one-se ...
Unlocking the doors with the detached key blade
Insert the key blade as far as possible in the driver's door lock. Turn the key
blade clockwise approximately one-quarter turn to unlock the driver's door only.
NOTE
After unlocking t ...
How can I prepare for my next OBD II emission inspection?
• If your Check Engine (MIL) light is lit – or
was lit but went out without service, have
your vehicle diagnosed and, if necessary,
serviced by a qualified Volvo technician.
• If you recently h ...
