Jump Starting Using Another Battery - Volvo V90 Owner's Manual

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.
STARTING AND DRIVING
11. Start the engine of the vehicle with the dead
battery.
CAUTION
Do not touch the connections between the
cable and the vehicle during the start attempt.
Risk of sparking.
12. Remove the jumper cables in the reverse
order ‒ first the black cables and then the
red cables.
Make sure that none of the clamps of the
black jumper cables come into contact with
either vehicle's positive (+) jump start termi-
nals or either of the red jumper cable's con-
nected clamps.
WARNING
PROPOSITION 65 WARNING! Battery posts,
terminals, and related accessories contain
lead and lead compounds, chemicals known
to the state of California to cause cancer and
reproductive harm. Wash hands after han-
dling.
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