Mercedes-Benz SLS AMG GT Coupe Operator's Manual page 244

Towing and tow-starting
242
First, remove the jumper cables from earth point ? and negative terminal =, then from
X
positive clamp : and positive terminal ;. Each time beginning with your vehicle's battery.
Slide cover A of the positive terminal in the opposite direction to the arrow.
X
Have the battery checked at a qualified specialist workshop.
X
i
Jump-starting is not considered to be a normal operating condition.
i
Jumper cables and further information regarding jump-starting can be obtained at any
qualified specialist workshop.
Towing and tow-starting
Important safety notes
G WARNING
The rear axle locks when:
the engine is not running
R
the engine stalls while the vehicle is being
R
towed
there is a malfunction in the power supply
R
or the vehicle's electrical system
There is a risk of an accident.
In the event of a breakdown, you should
always have the vehicle transported.
G
WARNING
If the brake system or power steering is
malfunctioning and your vehicle is then towed
away, significantly more effort may be
required to steer and brake than is normally
required. 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
If the weight of the vehicle to be towed or tow-
started is greater than the permissible gross
weight of your vehicle:
the towing eye could detach itself
R
the vehicle/trailer combination could
R
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.
! Use the SmartKey instead of the Start/
Stop button when towing the vehicle.
Start the engine and keep it running. Turn
the SmartKey to position 2 in the ignition.
Set the transmission to N using the E-
SELECT lever. Make sure that you then
leave the SmartKey in position 2.
Check the transmission position in the
instrument cluster.
! Make sure that the electric parking brake
is released. If the electric parking brake is
faulty, visit a qualified specialist workshop.
Mercedes-Benz recommends that you use
an authorized Mercedes-Benz Center for
this purpose.
! When towing, pull away slowly and
smoothly. If the tractive power is too high,
the vehicles could be damaged.
! Only secure the tow rope or tow bar at the
towing eyes. Otherwise, the vehicle could
be damaged.
! Do not use the towing eyes for recovery
purposes as this could damage the vehicle.
If in doubt, recover the vehicle with a crane.
! The vehicle can be towed a maximum of
30 miles (50km). The towing speed of
30 mph (50 km/h) must not be exceeded.
If the vehicle has to be towed more than
30 miles (50km), the entire vehicle must be
raised and transported.
! Do not tow with sling-type equipment.
This could damage the vehicle.