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The essentials
Connect one end of the r
ed
jump l
ead to
the positive
+
terminal of the vehicle
with the fl
at batt
ery
A
›
›
›
Fig. 80.
Connect the other end of the red jump
lead to the positive terminal
+
in the ve-
hicl
e pr
o
viding assistance
B
.
In v
ehicl
es without a St
art-Stop system:
connect one end of the black jump lead
to the negative terminal
–
of the vehicle
pr
o
viding the curr
ent
B
›
›
›
Fig. 80.
In vehicles with a Start-stop system:
connect one end of the black jump lead
X
to a suitable ground terminal, to a sol-
id piece of met
al in the engine bl
ock
, or
to the engine block itself
›››
Fig. 81.
Connect the other end of the black jump
lead
X
to a solid metal component bol-
t
ed t
o the engine bl
ock or to the engine
block itself of the vehicle with the flat
battery. Do not connect it to a point near
the battery
A
.
P
osition the l
eads in such a w
ay that
they cannot come into contact with any
moving parts in the engine compart-
ment.
Starting
Start the engine of the vehicle with the
boosting battery and let it run at idling
speed.
2.
3.
4a.
4b.
5.
6.
7.
Start the engine of the vehicle with the
flat battery and wait for 2 or 3 minutes
until the engine is running.
Removing the jump leads
Before you remove the jump leads,
switch off the dipped beam headlights if
they are switched on.
Turn on the heater blower and heated
rear window in the vehicle with the flat
battery. This helps minimise voltage
peaks which are generated when the
leads are disconnected.
When the engine is running, disconnect
the leads in reverse order to the details
given above.
Make sure the battery clamps have sufficient
metal-to-metal contact with the battery ter-
minals.
If the engine fails to start after about 10 sec-
onds, switch off the starter and try again after
about 1 minute.
WARNING
●
Please note the saf
ety warnings referring
to working in the engine compartment
›››
page 301, Working in the engine
compartment.
●
The battery providing assistance must
have the same voltage as the flat battery
(12 V) and approximately the same capaci-
8.
9.
10.
11.
ty (see imprint on battery). Failure to com-
ply could result in an e
xplosion.
●
Never use jump leads when one of the
batteries is frozen. Danger of explosion!
Even after the battery has thawed, battery
acid could leak and cause chemical burns.
If a battery freezes, it should be replaced.
●
Keep sparks, flames and lighted ciga-
rettes away from batteries, danger of ex-
plosion. Failure to comply could result in an
explosion.
●
Observe the instructions provided by the
manufacturer of the jump leads.
●
Do not connect the negative cable from
the other vehicle directly to the negative
terminal of the flat battery. The gas emit-
ted from the battery could be ignited by
sparks. Danger of explosion.
●
Never attach the negative cable to fuel
system components or the brake lines in
the other vehicle.
●
The non-insulated parts of the battery
clamps must not be allowed to touch. The
jump lead attached to the positive battery
terminal must not touch metal parts of the
vehicle, this can cause a short circuit.
●
Position the leads in such a way that they
cannot come into contact with any moving
parts in the engine compartment.
●
Do not lean on the batteries. This could
result in chemical burns.
60
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