taken from
http://www.programyourkeys.com/Renault_Clio_II_Key_Remote_Control_Fob_Transponder_Programming.html
Renault Clio II Key Remote Control Programming
CLIO II INFRA RED RESYNCHRONISING
1. Turn the Ignition OFF.
2. Press the central door locking button (on the dash or by the handbrake, not the keyfob) for more than 5 seconds. Note: the door should lock then unlock.
3. When this happens, 10 seconds is allowed and the immobiliser warning light illuminates.
4. Point the 1st key at the receiver and press the button twice, the doors should lock and unlock. Repeat for other remotes as required.
5. Check the remote control unlocks and locks the doors.
--------------------------------------------------------------------------------
CLIO II RF RESYNCHRONISING
1. Turn Ignition OFF.
2. Press the central door locking button for more than 5 seconds. Note: the door should lock then unlock.
3. When this happens, 10 seconds is allowed and the immobiliser warning light illuminates.
4. Press the remote control once, the doors should lock and unlock.
5. Repeat for second remote if required.
6. Check the remote control unlocks and locks the doors.
faq, May 2009