CITROEN C4 Handbook page 150

Towingwithallwheelsontheground
Towing ring fixings are placed at the front and at the rear of the vehicle.
To access them:
- at the front: push on the left to tilt the cover, then remove it.
- at the rear: push at bottom, then pull on top.
The cover remains attached to the bumper by means of a tab, so that it cannot
become lost.
Theignitionkeyshouldbeinposition"M"soastoretainsteering.
Use a bar with hooks to attach on the towing rings.
Vehicleswithmanualtransmission
For vehicles with manual transmission, the gear lever must be in neutral. Fail-
ure to observe this requirement can lead to the failure of certain braking com-
ponents and a lack of braking assistance on restarting the engine.
XI XI
146
P R A C T I C A L A D V I C E
If the engine is not
running,thesteeringand 
braking systems will
notbepower-assisted.
If towing another vehicle, the
latter should be free-wheeling 
(thatis,gearboxinneutral).