my keys seem not working
probably there is an problem
first the remote for lock seem not to work
then when i use classic ways to unlock the doors the immobiliser kicks in.
Im stucked)

marco dio, May 2009

Put a new battery in the remote then re-synchronise the remote to the car.
The instructions here

http://www.programyourkeys.com/Renault_Laguna_II_Key_Remote_Control_Fob_Transponder_Programming.html

should help, depending on the year of your car. They are for the Laguna, but work on the Megane too.
There are other things which can cause your problem, but start with the cheap and easy stuff.

gaffa, May 2009