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232
If and when
Jump leads
Jump leads must comply with standard DIN 72553 (see manufacturer's docu-
mentation). The wire cross section must be at least 25 mm
2
and at least 35 mm
for diesel engines.
Note
•
The vehicles 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 vehicle elec-
trical system.
How to jump start: description
2
for petrol engines
Jump lead terminal connections
1. Switch off the ignition of both vehicles ⇒
2. Connect one end of the red jump lead to the positive terminal
⇒ fig. 163
battery
3. Connect the other end of the red jump lead to the positive
terminal
Fig. 163 Diagram for
connecting jump leads if
the vehicle providing
4. On vehicles with no Start-Stop system, connect one end of the
assistance the current is
black jump lead to the negative terminal
not fitted with the Start-
Stop system: flat battery
providing assistance
A
and battery providing
A
A
current
.
B
5. On vehicles with the Start-Stop system, connect one end of the
black jump lead
part bolted to the engine block or to the engine block itself
⇒ fig.
A
⇒ fig. 164
A
or
of the vehicle with the flat
+
+
A
.
A
A
in the vehicle providing assistance
+
A
⇒ fig.
163.
B
A
to a suitable ground terminal, to a solid metal
X
164.
Fig. 164 Diagram for
connecting jump leads if
the vehicle providing
assistance is fitted with
the Start-Stop system:
A
flat battery
and
A
battery providing current
A
.
B
.
A
.
B
A
in the vehicle
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