Jump-starting
Important safety notes
G
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. G
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. 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.
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 donor battery
using jumper cables. For this purpose, the
vehicle has a jump-starting connection point
in the engine compartment.
The additional battery in the engine
compartmenti s not suitable for jump-starting
operations. If your vehicle requires jump-
starting, or if you use it to jump-start another
vehicle, use the jump-starting connection
point in the engine compartment.
When jump-starting, observe the following
points:
R The battery is not accessible in all vehicles.
If the other vehicle's battery is not accessible, jump-start the vehicle using a
donor battery or a jump-starting device.
R Do not start the engine if the battery is
frozen. Let the battery thaw first.
R Jump-starting may only be performed from
batteries with a nominal voltage of 12 V.
R Only use jumper cables that have a
sufficient cross-section and insulated
terminal clamps.
R If the battery is fully discharged, attach the
battery of another vehicle for a few minutes
before attempting to start. This charges the
empty battery a little.
R Make sure that the two vehicles do not
touch.
Make sure that:
R the jumper cables are not damaged.
R bare parts of the terminal clamps do not
come into contact with other metal parts
while the jumper cables are connected to
the battery.
R 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.
i Jumper cables and further information
regarding jump starting can be obtained at
any qualified specialist workshop. Before connecting the jumper cables
On vehicles with a battery main switch, check
whether the battery main switch is switched
on (Y page 132).
X Apply the parking brake.
X Move the selector lever of the automatic
transmission to position P.
X Switch off all electrical consumers, e.g.
audio equipment, blower.
X Turn the key to position 0in the ignition
lock and remove it (Y page 133).
X Open the hood (Y page 240). Jump-starting
267Breakdown assistance Z
Tow-starting and towing away
Important safety notes
G
WARNING
Functions relevant to safety are restricted or
no longe ravailable if:
R the engine is not running.
R the brake system or the powe rsteering is
malfunctioning.
R there is a malfunctio ninthe voltage supply
or the vehicle's electrical system.
If your vehicle is being towed, much more
force may be necessary to steer or brake.
There is a risk of an accident.
In such cases, use a tow bar. Before towing,
make sure that the steering moves freely. G
WARNING
You can no longer steer the vehicle if the
steering wheel lock has been engaged. There
is a risk of an accident.
Always switch off the ignition when towing the
vehicle with a tow cable or a tow bar. G
WARNING
If the weight of the vehicle to be towed or tow-
started is greater than the permissible gross
weight of your vehicle:
R the towing eye could detach itself
R the vehicle/trailer combination could
rollover.
There is a risk of an accident.
When towing or tow-starting another vehicle,
its weight should not be greater than the
permissible gross weight of your vehicle.
Information on your vehicle's gross vehicle
weight rating can be found on the vehicle
identification plate (Y page 315).
! Only secure the tow rope or tow bar at the
towing eyes. Otherwise, the vehicle could
be damaged. !
Observe the following points when towing
with a tow rope:
R Secure the tow rope on the same side on
both vehicles.
R Ensure that the tow cable is not longer
than legally permitted. Mark the tow
cable in the middle, e.g. with a white
cloth (30 x 30 cm). This will make other
road users aware that the vehicle is being
towed.
R Only secure the tow cable to the towing
eye.
R Observe the brake lamps of the towing
vehicle while driving. Always maintain a
distance so that the tow rope does not
sag.
R Do not use steel cables or chains to tow
your vehicle. You could otherwise
damage the vehicle.
! Do not use the towing eye for recovery,
this could damage the vehicle. If in doubt,
recover the vehicle with acrane.
! When towing, pull away slowly and
smoothly .Ifthe tractive power is too high,
the vehicles could be damaged.
Observe the legal requirements for the
relevant country when towing.
It is preferable to have the vehicle
transported on a transporter or trailer instead
of towing it.
The automatic transmission selector lever
must be in the Nposition when towing the
vehicle.
The battery must be connected and charged.
Otherwise, you:
R cannot turn the key in the ignition lock to
position 2
R cannot move the selector lever to position
Non vehicles with automatic transmission.
i Switch off the automatic locking feature
before the vehicle is towed (Y page 69). You
could otherwise lock yourself out of the
vehicle when pushing or towing away the
vehicle. 268
Tow-starting and towing awayBreakdown assistance
