Conserving electrical current

Keep the following in mind to help minimize battery drain:
- When the engine is not running, avoid using ignition mode II. Many electrical systems (the audio system, the optional navigation system, power windows, etc) will function in ignition modes 0 and I. These modes reduce drain on the battery.
- Please keep in mind that using systems, accessories, etc., that consume a great deal of current when the engine is not running could result in the battery being completely drained. Driving or having the engine running for approximately 15 minutes will help keep the battery charged.
See also:
Safety Features
The S80 excels at safety. Before the little bubble above your head fills with
the word "Duh," let me add that this Volvo has some breakthrough safety gizmos
we hadn't seen until very rec ...
Automatic transmission
P (Park)
Use this position when starting the engine or
parking the vehicle.
Never use P while the vehicle is in motion.
The parking brake should also be set whenever
the vehicle is parked.
...
Crash event data
This vehicle is equipped with an event data recorder (EDR). The main purpose
of an EDR is to record, in certain crash or near crash-like situations, such as
an air bag deployment or hitting a road ...
