CITROËN DS 4 Handbook page 275

Grasp the towball firmly with one hand; with
the other hand, press and turn the locking
wheel clockwise as far as it will go.
Extract the towball downward.
Be ready for the weight of the towball
(around 3.5 kg). Risk of injury!
Refit the protective cover for the ball and the
protective cover for the locking wheel.
Stow the towball in its bag.
Refit the protective blanking plug to the carrier.
Practical information
Maintenance
Correct operation is only possible if the towball
and its carrier remain clean.
Before cleaning the vehicle with a high pressure
jet wash, the towbar harness socket carrier must
be folded away, the towball removed and the
blanking plug inserted in the carrier.
For any work on the towbar, got to a CITROËN
dealer or a qualified workshop.
273