if you already have the code then check the owners manual for the procedure. on a lot of earlier renaults you need to insert the key in the drivers door and turning the key in unison to the numbers of the code. for example if your code is 4.2.4.3, you first turn the key to the left 4 separate times , then 2 separate times to the right, then 4 to the left and finally 3 to the right (hence 4.2.4.3). car should start as normal though immobliser will be permanently off.
Dean Berret, July 2005