This isn't a mid nineties Renault. The CL system (RF or IR) has zero influence on the Immobiliser system.
The Immobiliser is completely based upon the transponder chip in the key which is no part of the IR/RF central locking. You can completely remove the CL fob and purely have the transponder chip inside the transponder inductor ring.
When you put any key in the ignition and turn to position two, the BSI/CPH powers up the coil in the transponder ring, this then (wirelessly...) powers up the transponder chip in the key which then sends back a code which is picked up by the coil and is then sent to the BSI/CPH. The BSI/CPH then interprets this signal from the transponder chip and sends a message to the engine controller (ECU) containing the BSI/CPH information _AND_ the transponder chip information. Only if both of these bits of information are correct will the engine controller permit a start up, without this, the engine will crank forever but the ECU will stay in a shutdown state and not power the injectors.
This is so that you cannot pull out a BSI/CPH and key and put it in any car and the engine controller will allow a startup. The transponder chip in the key, BSI/CPH and engine ECU are a matched set.
As said, the central locking system is nothing to do with the system, so you can discount any issues there being the cause, if you see any correlation, it is purely coincidental.
The Immobiliser is completely based upon the transponder chip in the key which is no part of the IR/RF central locking. You can completely remove the CL fob and purely have the transponder chip inside the transponder inductor ring.
When you put any key in the ignition and turn to position two, the BSI/CPH powers up the coil in the transponder ring, this then (wirelessly...) powers up the transponder chip in the key which then sends back a code which is picked up by the coil and is then sent to the BSI/CPH. The BSI/CPH then interprets this signal from the transponder chip and sends a message to the engine controller (ECU) containing the BSI/CPH information _AND_ the transponder chip information. Only if both of these bits of information are correct will the engine controller permit a start up, without this, the engine will crank forever but the ECU will stay in a shutdown state and not power the injectors.
This is so that you cannot pull out a BSI/CPH and key and put it in any car and the engine controller will allow a startup. The transponder chip in the key, BSI/CPH and engine ECU are a matched set.
As said, the central locking system is nothing to do with the system, so you can discount any issues there being the cause, if you see any correlation, it is purely coincidental.
