Trailer towing
PARKTRONIC is deactivated for the rear area when you establish an electrical connection between your vehicle and a trailer.
Fold in the ball coupling if the trailer tow hitch is not required. PARKTRONIC
measures the minimum detection range to an obstacle from the bumper, not the ball
coupling.
See also:
Vehicle data, GL 550
The data stated here refers specifically to a
vehicle with standard equipment. Consult an
authorized Mercedes-Benz Center for the
data for all vehicle variants and trim levels.
...
Towing the vehicle with the rear axle raised
Only possible on vehicles without 4MATIC.
When towing your vehicle with the rear axle raised, it is important that you
observe the safety instructions ().
The ignition must be switched off if y ...
Heavy and light loads
WARNING
Depressing the brake pedal constantly results
in excessive and premature wear to the brake
pads.
It may also cause the brakes to overheat,
seriously impairing their effectiveness. ...