Coupling up a trailer
Observe the maximum permissible trailer dimensions (width and length).
Most U.S. states and all Canadian provinces require by law:
- safety chains between the towing vehicle and the trailer. The chains should be crosswound under the trailer drawbar. They must be fastened to the vehicle's trailer coupling, not to the bumper or the axle. Allow for enough play in the chains to facilitate turning tight corners.
- a separate brake system for certain types of trailer.
- a safety switch for braked trailers. Check the specific legal requirements
applicable to your state.
If the trailer detaches from the towing vehicle, the safety switch applies the trailer's brakes.
Do not connect the trailer's brake system (if featured) to the hydraulic brake
system of the towing vehicle, as the latter is equipped with an anti-lock brake
system. Doing so will result in a loss of function of the brake systems of both
the vehicle and the trailer.
The vehicle's wiring harness features a connection to the brake indicator lamp.
- Make sure that the automatic transmission is set to position P.
- Apply the vehicle's parking brake.
- Close all doors and the tailgate.
- Couple up the trailer.
- Establish all electrical connections.
See also:
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. ...
The windshield wipers are obstructed
Leaves or snow, for example, may be
obstructing the windshield wiper movement.
The wiper motor has been deactivated.
For safety reasons, you should
remove the SmartKey from the ignition lock.
...
Receiving vCards via Bluetooth®
You can receive vCards from devices (such as
a PC) which support the transmission of
vCards via Bluetooth®.
This requires the device to be authorized in
COMAND. PCs must be authorized via the
...
