Detachable tow ball
When not in use, always transport the tow ball arm securely fastened in the luggage compartment.
Take special care when fitting the tow ball arm as the safety of the vehicle and the trailer depends on this.
Do not use any tools for mounting or dismounting the tow ball arm. Do not modify the trailer coupling. Do not disassemble or repair the tow ball arm.

5. Release the handwheel. The tow ball arm is unlocked.
Inserting the tow ball arm The tow ball arm may only be inserted when completely unlocked.
1. Pull out the plug (1).
2. Insert the tow ball arm vertically and press it upwards until it engages (2).
Do not hold your hand near the handwheel.
3. The green mark on the handwheel must align with the white dot on the tow ball. 4. To lock, turn the key clockwise and remove the key (3).5. Attach the keyhole protective cap.

Before starting your journey, make sure that the tow ball arm is properly locked.
Check:
• The green mark on the handwheel is aligned with the white dot on the tow ball arm. • the handwheel (A) is correctly fitted to the tow ball arm. • you have removed the key (B).• the tow ball arm is securely positioned.
It must not move when jerked.
Removing the tow ball arm Never unlock the tow ball arm with the trailer attached.
1. Unhitch the trailer. 2. Detach the keyhole protective cap. 3. Insert the key and turn it anti-clockwise to unlock (1). 4. Hold the tow ball arm. Pull the handwheel out, turn it clockwise against the stop (2) and remove the tow ball arm (3).
5. Release the handwheel.
When unlocked in this way, the tow ball arm can be reinserted at any time.
Insert the plug into its seat (4).
Maintenance Remove the tow ball arm and protect the seat with the plug before steam cleaning your vehicle.Keep the system clean. Periodically lubricate bearings, sliding surfaces, and locking balls with resin-free grease or oil and the lock with graphite.
Keep a note of the key number. In case of loss, replacement keys are available from the manufacturer by stating the three digit key number.
Test yourself
A quick Ford Focus quiz: every answer comes with an explanation and a link to the manual page.