Editing Vehicle security system (section)

===340R Exige S1 and Elise S2 Before Feb 02===

S2 Elise prior to Feb. '02 and all 340R and S1 Exige models, use a Meta vehicle
security system, being either an M36 T2 electronic immobiliser meeting Thatcham category
2 requirements, or, as an optional upgrade, a full M99 T2 alarm system incorporating M23
cockpit intrusion sensing and a self powered siren, which meets Thatcham 1

The optional upgrade includes the following security features:

- Ingress protection using sensing switches on the front access panels and engine lid.
- Selectable cockpit intrusion sensing using a microwave sensor.

- Automatic (passive) engine immobilisation to prevent the engine from being started.

- Self powered siren to maintain protection if the vehicle battery is disconnected.

- 'Dynamic coding' of the transmitter keys; 
Each time the transmitters are used, the
operating frequency is randomly changed to guard against the possibility of code copying.
The alarm will be triggered by any of the following actions:
- Opening a door, engine lid or front access panel;
- Movement detected within the cockpit;
- Energising the ignition circuit ('hot wiring');
- Interruption of the vehicle battery power supply.
The transmitter fob with single button is incorporated into the head of the mechanical door key.
Replacement transmitter/keys may be ordered either uncoded (if only a mechanical blade is required, into the head of which the original transmitter board may be transferred), or coded (if security code is supplied). New coded transmitters must then be programmed to the car by the owner using a button press sequence.