Operation Manual

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 a jump-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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All vehicles except Mercedes-AMG vehicles: do not start the engine if the battery is frozen. Let
the battery thaw first.
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Only jump-start from batteries with a 12 V voltage rating.
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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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when the jumper cables are connected to the battery, uninsulated sections of the terminal clamp
do not come into contact with o
ther metal sections.
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the jumper cables cannot come into contact with parts which can move when the engine is
running, such as the V-belt pulley or the fan.
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Secure the vehicle by applying the electric parking brake.
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Shift the transmission to position P.
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Make sure that the ignition is switched off. All indicator lamps in the instrument cluster must be
off. When using the SmartKey, turn the SmartKey to position 0 in the ignition lock and remove it
(
Y page 162).
X
Switch off all electrical consumers, e.g. rear window defroster, lighting, etc.
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Open the hood.
Example: ground point cover
X
Turn fasteners : one Õ turn and remove.
X
Remove the cover while pressing down on cap ; of the washer fluid reservoir.
Jump-starting
377
Breakdown assistance
Z