Lotus Elise Service Notes page 552

Lotus Service Notes 340 H
340.M - ELECTRICAL
VEHICLE SECURITY
The 340R uses a Meta security system as either an M36 T2 electronic immobiliser meeting Thatcham
category 2 requirements, or, as an optional upgrade, a full M99 T 2 alarm system incorporating M23 cockpit
intrusion sensing and a self powered siren, which meets Thatcham 1. The Lucas 5AS security module used on
the standard Elise is not fitted. The Meta system operates as follows:
Keys & Vehicle Security Alarm
A single key operates the combined ignition switch/steering lock, with a second, smaller key type for the
fuel filler cap. The head of each ignition key incorporates an electronic transmitter for operation of the engine
immobiliser and security alarm system. Duplicates of both keys are supplied with the new vehicle. The key
numbers are stamped on the keys themselves, and should be recorded by the owner and kept with the vehicle
documents to enable the dealer to have replacements made if necessary.
Standard Immobiliser
In order to provide a measure of automatic vehicle security, independent of any driver initiative, the Meta
M36 T 2 immobiliser will 'passively' immobilise the engine's cranking and running circuits about 20 seconds
after the ignition has been turned off. The immobilised state will be indicated by the immobiliser tell tale on the
fascia top, ahead of the instruments, blinking once every two seconds.
To mobilise the engine, press once the button on the transmitter key head (with ignition either on or off).
Mobilisation will be acknowledged by the tell tale being extinguished.
Upgraded Security System
For enhanced protection from theft and vandal damage, the Elise 340R may be specified factory built with
a 'Meta' vehicle security system which incorporates the following 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.
Passive Immobilisation
In order to provide a measure of automatic vehicle security, independent of any driver initiative, the Meta
M36 T2 immobiliser will 'passively' immobilise the engine's cranking and running circuits about 20 seconds
after the ignition has been turned off. The immobilised state will be indicated by the alarm tell tale on the fascia
top, ahead of the instruments, blinking once every two seconds.
To mobilise the engine, press once the button on the transmitter key head (with ignition either on or off).
Mobilisation will be acknowledged by the tell tale being extinguished
Arming the Alarm
Remove the ignition key and check that the engine lid and front access panels are closed. Press the
transmitter button for about two seconds. This command will be acknowledged by:
Two flashes of the hazard warning lamps;
The tell tale on the fascia top lighting, and blinking off once a second. After a set-up period of 25 seconds
has elapsed, the tell tale will go out, and blink on once a second.
Check that these indications occur. If not, press the button a second time, as the first press may have only
switched off the passive immobilisation (see above). Note that if the system is armed when the engine lid or a
front access panel is not fully closed, four beeps will be heard as warning. If still open after 25 seconds, the
alarm will be armed with that switch excluded from the circuit.
After arming the system, a period of at least 25 seconds must elapse before all functions and sensors
become fully active. After this time, the alarm will be triggered by any of the following actions:
Opening the engine lid or front access panel;
Movement detected within the cockpit;
Energising the ignition circuit ('hot wiring');
Interruption of the vehicle battery power supply.
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