Ford Focus 2004 Owner's Manual page 104

Driving
The screws for the cover should be
lubricated before and after the
winter season.
When not in use the towball arm
should always be carried securely
fastened in the luggage
compartment.
The towball arm may be inserted
only when the mechanism is
unlocked correctly.
Special care should be
taken when fitting the
towball arm, as the safety of the
vehicle and the trailer depends on
this.
102
Unlocking the towball arm
mechanism
• Remove the protecting cap.
Insert the key and turn
anticlockwise to unlock.
• Pull the handwheel out and turn
it clockwise until it clicks.
• The red mark on the handwheel
must align with the white mark on
the towball.
• Release the handwheel. The
towball arm is unlocked.
Do not use any tools for
mounting/dismounting the
towball arm. Do not modify the
trailer coupling. Do not
disassemble/repair the towball
arm.