Mercedes-Benz SLR McLaren. Operator's Manual.

Practical hints
Towing the vehicle
Mercedes-Benz recommends that the vehicle
be transported with all wheels off the
ground using flatbed or appropriate wheel
lift/dolly equipment.
!
Use flatbed or wheel lift/dolly equipment
with SmartKey in starter switch
turned to position 0.
Do not tow with sling-type equipment.
Towing with sling-type equipment over
bumpy roads will damage radiator and
supports.
To prevent damage during transport,
do not tie down vehicle by its chassis or
suspension parts.
Switch off the tow-away alarm and the
automatic central locking.
When circumstances do not permit the
recommended towing methods, the vehicle
may be towed with all wheels on the
ground or front wheels raised only so far as
360
necessary to have the vehicle moved to a
safe location where the recommended
towing methods can be employed.
!
If the vehicle is towed with the front
axle raised, the engine must be shut off
(SmartKey in starter switch position 0
or 1). Otherwise the ESP ® will immediately
be engaged and will apply the rear
wheel brakes.
When towing the vehicle with all wheels
on the ground, the gear selector lever
must be in position N and the
SmartKey must be in starter switch
position 2.
When towing the vehicle with all wheels
on the ground or the front axle raised,
the vehicle may be towed only for distances
up to 30 miles (50 km) and at a
speed not to exceed 30 mph
(50 km/h).
!
To be certain to avoid a possibility of
damage to the transmission, however,
we recommend the drive shaft be disconnected
at the rear axle drive flange
for any towing beyond a short tow to a
nearby garage.
Warning! G
If circumstances require towing the vehicle
with all wheels on the ground, always tow
with a tow bar if:
the engine will not run
there is a malfunction in the electrohydraulic
brake system
there is a malfunction in the power supply
or in the vehicle’s electrical system
as that will be necessary to adequately control
the towed vehicle.