Acura 2011 RDX Owner's Manual page 480

Emergency Towing
Improper towing preparation will
damage the transmission. Follow the
above procedure exactly. If you cannot
shift the transmission or start the
engine, your vehicle must be
transported with the front wheels off the
ground.
With the front wheels on the ground,
do not tow the vehicle more than 50
miles (80 km), and keep the speed
below 35 mph (55 km/h).
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Trying to lift or tow your vehicle by the
bumpers will cause serious damage.
The bumpers are not designed to
support the vehicle's weight.
2011 RDX
The steering system can be damaged if
the steering wheel is locked. Leave the
ignition switch in the ACCESSORY (I)
position, and make sure the steering
wheel turns freely before you begin
towing.