2007-2013 Mercedes C Class 4 Door Breakdown assistance -> Jump-starting User Manual
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Breakdown assistance -> Jump-starting for Your Mercedes C Class 4 Door Second Generation (2007-2013)

Jump-starting
For the jump-starting procedure, use only the jump-starting connection point, consisting of a
positive terminal and an earth point, in the engine compartment.
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WARNING
Battery acid is caustic. There is a risk of injury.
Avoid contact with the skin, eyes or clothing. Do not inhale any battery gases. Do not lean over
the battery. Keep children away from batteries. Wash battery acid immediately with water and
seek medical attention.
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WARNING
During charging and jump-starting, explosive gases can escape from the battery. There is a risk
of an explosion.
Particularly avoid fire, open flames, creating sparks and smoking. Ensure there is sufficient
ventilation while charging and jump-starting. Do not lean over a battery.
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WARNING
During the charging process, a battery produces hydrogen gas. If a short circuit occurs or sparks
are created, the hydrogen gas can ignite. There is a risk of an explosion.
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Make sure that the positive terminal of a connected battery does not come into contact with
vehicle parts.
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Never place metal objects or tools on a battery.
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It is important that you observe the described order of the battery terminals when connecting
and disconnecting a battery.
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When jump-starting, make sure that the battery poles with identical polarity are connected.
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It is particularly important to observe the described order when connecting and disconnecting
the jumper cables.
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Never connect or disconnect the battery terminals while the engine is running.
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WARNING
Non-combusted fuel can collect in the exhaust system and ignite. There is a risk of fire. Avoid
repeated and lengthy starting attempts.
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Avoid repeated and lengthy starting attempts. Otherwise, the catalytic converter could be
damaged by the non-combusted fuel.
Do not start the vehicle using a rapid charging device. If your vehicle's battery is discharged,
the engine can be jump-started from another vehicle or from a second battery using jumper
cables. Observe the following points:
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The battery is not accessible in all vehicles. If the other vehicle's battery is not accessible,
jump-start the vehicle using a second battery or ajump-starting device.
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You may only jump-start the vehicle when the engine and exhaust system 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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Jump-starting
Breakdown assistance
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Only use jumper cables which 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
for a few minutes before attempting to start. This charges the battery slightly.
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Make sure that the two vehicles do not touch.
Make sure that:
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the jumper cables are not damaged.
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bare parts of the terminal clamp do not come into contact with other metal parts while the
jumper cables are connected to the battery.
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the jumper cables cannot come into contact with parts such as the V-belt pulley or the fan.
These parts move when the engine is started and while it is running.
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Apply the parking brake firmly.
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Move the selector lever to position P.
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Switch off all electrical consumers (e.g. radio, blower, etc.).
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Open the hood (Y page 284).
Position number B identifies the charged battery of the other vehicle or an equivalent jump-
starting device.
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Slide cover : of positive terminal ; in the direction of the arrow.
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Connect positive terminal ; on your vehicle to positive terminal = of donor battery B
using the jumper cable, beginning with your own battery.
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Start the engine of the donor vehicle and run it at idling speed.
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Connect negative terminal ? of donor battery B to ground point A of your vehicle using
the jumper cable, connecting the jumper cable to battery of other vehicle B first.
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Start the engine.
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Before disconnecting the jumper cables, let the engine run for several minutes.
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First, remove the jumper cables from earth point A and negative terminal ?, then from
positive clamp ; and positive terminal =. Begin each time at the contacts on your own
vehicle first.
Jump-starting
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Breakdown assistance
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