Ford Mondeo Owner's Manual page 192

Driving without a trailer
E94771
1. Remove the tow ball arm.
2. Insert the plug into its seat (1).
WARNING
Never unlock the tow ball arm with
the trailer attached.
Maintenance
WARNING
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.
In case of loss, replacement keys are
available from the manufacturer by stating
the number on the lock cylinder.
Towing
1
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