Jump-Starting - Mercedes-Benz E-Class 2011 Owner's Manual

Jump-starting

354
Jump-starting
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WARNING
There is a risk of acid burns when jump-starting a vehicle due to the gases which escape from
the battery. Do not lean over the battery while the engine is being jump-started.
G WARNING
Gases escaping from the battery during jump-starting may cause minor explosions. Avoid cre-
ating sparks. Keep naked flames away from the battery, and do not smoke.
Comply with safety precautions when handling batteries. You will find these under "Battery (vehi-
cle)" in the index.
G
WARNING
Non-combusted fuel can collect in the exhaust system and ignite. There is a risk of fire. Avoid
repeated and lengthy starting attempts.
! Avoid repeated and lengthy starting attempts. Otherwise, the catalytic converter could be
damaged by the non-combusted fuel.
Do not use a rapid charging device to start the vehicle. If your vehicle's battery is discharged,
the engine can be jump-started from another vehicle or from a second battery using jump
leads. Observe the following points:
the battery is not accessible in all vehicles. if the other vehicle's battery is not accessible,
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jump-start the vehicle using a second battery or a jump-starting device.
you may only jump-start the vehicle when the engine and catalytic converter are cold.
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do not start the engine if the battery is frozen. let the battery thaw first.
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jump-starting may only be performed from batteries with a nominal voltage of 12 V.
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only use jump leads that have a sufficient cross-section and insulated terminal clamps.
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If the battery is fully discharged, leave the battery that is being used to jump-start connected
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for a few minutes before attempting to start. This charges the empty battery a little.
Make sure that the two vehicles do not touch.
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Make sure that:
the jump leads are not damaged.
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bare parts of the terminal clamp do not come into contact with other metal parts while the
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jump leads are connected to the battery.
the jump leads cannot come into contact with parts such as the V-belt pulley or the fan.
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These parts move when the engine is started and while it is running.
Apply the parking brake firmly.
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Manual transmission: engage neutral.
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Automatic transmission: move the selector lever to P.
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Switch off all electrical consumers (e.g. radio, blower, etc.).
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Open the bonnet (
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page 321).
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