Maintenance 5
Self-help
Jump start
NOTE
When the truck battery is discharged, a
jump-start battery can be used with a jumper
cabletostartthetruck.Thefollowingmustbe
taken into consideration when doing this:
•
Both batteries must have the same nominal
voltage.
•
The capacity (Ah) of the current-giving
battery must not be significantly lower than
the capacity of the discharged battery.
•
Use a jumper cable with a su
fficient cross-
section and insulated po
le clips.
WARNING
A discharged battery can freeze at temperatures
below 0°C. There is then a risk of explosion.
Before connecting the jumper cable, it is essential
that a frozen battery is thawed.
¾ Switch off all current consumers (heater, air
conditioning, lighting).
¾ Open the engine bonnet.
¾ Connect one end of the positive cable (1) to
the positive terminal (+) of the discharged
truck battery (2).
¾ Connect the other end of the positive
cable (1) to the positive terminal (+) of the
current-giving battery (5).
¾ Connect one end of the negative cable (4)
to the negative terminal (-) of the current-
giving battery (5).
¾ Connect the other end of the negative
cable (4) as far away as possible from the
discharged truck battery (2) to a massive
metal component securely connected to the
engine block or to the engine block itself (3).
NOTE
If the jump-start battery is housed in another
vehicle, start the vehicle’s engine and allow to
idle.
¾ Start the engine.
Operating Instructions – 394 807 10 01 EN – 07/2011 201
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