CITROEN 2015 Berlingo Multispace Handbook page 153

During use
Never unlock the device when
a trailer or load carrier is fitted to the
swan neck.
After use
For journeys made without a trailer
or load carrier, the swan neck must
be removed and the blanking plug
inserted in the carrier. This measure
applies particularly if the swan neck
could hinder visibility of the number
plate or lighting.
Removal
Towing a trailer
Maintenance
Correct operation is only possible if the
swan neck and its carrier remain clean.
Before cleaning the vehicle with a high
pressure jet wash, the swan neck must
be removed and the blanking plug
inserted in the carrier.
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