User Manual - Page 458

For 2019 VOLVO V90 CROSS COUNTRY.

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STARTING AND DRIVING
456
Battery drain
The electrical functions in the vehicle drain the
battery to varying degrees. Avoid using ignition
mode II when the engine is switched off. Use
ignition mode I instead, as this uses less electri-
cal current.
Note that certain accessories may also drain
power from the electrical system. Do not use
functions that use a lot of electrical current when
the engine is turned off. Examples of such func-
tions are:
•
blower
•
headlights
•
windshield wipers
•
audio system (especially at high volume).
If the starter battery voltage is low, a message is
shown in the driver display. The vehicle's energy-
saving function will then turn off or reduce certain
functions, such as the blower and/or the audio
system.
–
Charge the battery by starting the engine
and let it run for at least 15 minutes (driving
charges the battery faster than letting the
engine idle).
Related information
•
Start battery (p. 612)
•
Ignition modes (p. 416)
Jump starting using another battery
If the start battery is discharged, current from
another battery can be used to start the vehicle.
Jumper cable connecting points.
To avoid short circuits or other damage, the fol-
lowing steps are recommended when jump star-
ting the battery using another battery:
1.
Put the ignition in mode 0.
2. Make sure the auxiliary battery (the battery
used to jump start the discharged battery)
has a voltage of 12 volts.
3. If the auxiliary battery is in another vehicle,
turn off that vehicle's engine and make sure
that the vehicles are not touching each other.
4. Clamp the red jumper cable onto the auxiliary
battery's positive (+) terminal (1).
CAUTION
Connect the jump cable carefully to prevent
short circuits with other components in the
engine compartment.
5. Fold back the cover over your vehicle's posi-
tive (+) jump start terminal (2).
6. Clamp the other end of the red jumper cable
to your vehicle's positive (+) jump start termi-
nal (2).
7. Clamp the black jumper cable onto the auxili-
ary battery's negative (-) terminal (3).
8. Clamp the other end of the black jumper
cable to your vehicle's negative (-) ground
point (4).
9. Make sure the jumper cables are securely
attached to help prevent sparks while jump
starting.
10. Start the engine of the assisting vehicle and
let it run for a few minutes at a higher idling
speed than normal, about 1500 rpm.
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