Jump-starting
ä
Introduction
This chapter contains information on the following subjects:
Jump-starting 152
Jump-starting in vehicles with the START-STOP system 153
The battery of another vehicle can be used to jump-start your vehicle if the en-
gine will not start because the battery is flat. Jump-start cables are required for
this purpose.
Both batteries must have a rated voltage of 12 V. The capacity (Ah) of the battery
supplying the power must not be significantly less than the capacity of the dis-
charged battery in your vehicle.
Jump-start cables
Only use jump-start cables which have an adequately large cross-section and in-
sulated terminal clamps. Observe the manufacturer's instructions.
Positive cable – colour coding in the majority of cases is red.
Negative cable – colour coding in the majority of cases is black.WARNING
■ A discharged vehicle battery may already freeze at temperatures just below
0 °C. In case of frozen battery carry out no jump-starting – risk of explosion!
■ Pay attention to the warning instructions relating to working in the engine
compartment » page 126, Engine compartment .
■ The non-insulated parts of the terminal clamps must never make contact
with each other. In addition, the jump-start cable connected to the positive
terminal of the battery must not come into contact with electrically conduct-
ing parts of the vehicle – risk of short circuit!
■ Do not clamp the jump-start cable to the negative terminal of the dis-
charged battery. There is the risk of detonating gas seeping out the battery
being ignited by the strong spark which results from the engine being started. ■ Route the jump-start cables so that they cannot be caught by any rotating
parts in the engine compartment. ■ Do not bend over the battery – risk of caustic burns!
■ The vent screws of the battery cells must be tightened firmly. WARNING (Continued)
■ Keep any sources of ignition (naked flame, smouldering cigarettes, etc.)
away from the battery – risk of an explosion!
■ Never jump-start vehicle batteries with an electrolyte level that is too low –
risk of explosion and caustic burns. Note
■ There must not be any contact between the two vehicles otherwise current
may flow as soon as the negative terminals are connected. ■ The discharged battery must be properly connected to the system of the vehi-
cle. ■ We recommend you buy jump-start cables from a car battery specialist. Ð Jump-starting
Fig. 117
Jump-starting using the battery
from another vehicle: A – flat ve-
hicle battery, B – battery provid-
ing current
First read and observe the introductory information and safety warn-
ings on page 152.
The jump-start cables must be attached in the following sequence.
Connecting positive terminals
›
Attach one end 1
» Fig. 117 to the positive terminal of the discharged battery
A
.
› Attach the other end 2
to the positive terminal of the battery supplying the
power B
.
Connecting negative terminal and engine block
› Attach one end 3
»
Fig. 117 to the negative terminal of the battery supplying
the power B
.
£
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152 Do-it-yourself
