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The essentials
Note
●
The vehic
les must not touch each other,
otherwise electricity could flow as soon as
the positive terminals are connected.
●
The discharged battery must be properly
connected to the on-board network.
How to jump start: description
Fig. 89 Diagram of connections for vehicles
w
ithout
Start-Stop system.
Fig. 90 Diagram of connections for vehicles
with St
art-Stop system.
Jump lead terminal connections
Sw
it
c
h off the ignition of both vehicles
›››
.
C
onnect
one end of
the red jump lead to
the positive
+
terminal of the vehicle
w
ith the fl
at
battery
A
›
›
› Fig. 89
.
Connect the other end of the red jump
lead to the positive terminal
+
in the
v
ehic
l
e providing assistance
B
.
F
or
vehicles without Start-Stop system:
connect one end of the black jump lead
to the negative terminal
–
of the vehi-
c
l
e pr
oviding the current
B
›
›
› Fig. 89
.
For vehicles with Start-Stop system: con-
nect one end of the black jump lead
X
to a suitable ground terminal, to a solid
piec
e of
met
al in the engine block, or to
the engine block itself ››› Fig. 90.
1.
2.
3.
4a.
4b.
Connect the other end of the black jump
lead
X
to a solid metal component bol-
t
ed t
o the en
gine block 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
o
s
ition the leads in such a way 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.
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.
5.
6.
7.
8.
9.
10.
11.
72
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