Lotus Elise Service Notes page 406

Alarm Trouble Shooting
Symptom: Vehicle was left for a few minutes without setting the alarm, and now the engine won't start.
Possible cause: Passive immobilisation has taken effect (indicated by the tell tale flashing), as designed - see
above.
Symptom: The transmitter key will not arm or disarm system.
Possible cause:Transmitter key battery low. When the key battery becomes low, the transmitter key L.E.D. will
blink in an irregular manner, or once only instead of remaining lit until the button is released.
To replace transmitter battery:
a). Open the transmitter key body by levering in the zone marked 'OPEN', and withdraw the battery.
b). The keys are powered by a 3v long life lithium battery type CR2032. With normal use, this should last
between 3 and 5 years. After opening the new battery packaging, touch only the sides of the battery, and
fit the battery into the key case with the positive side (+) upwards as shown.
c). Press the battery case together.
Symptom: Both transmitters fail to operate with good batteries.
Possible cause: Transmitter programming has been inadvertently wiped during use of touch key - repro-
gramme keys (see above).
Symptom: The alarm triggers for no apparent reason.
Possible cause: When the transmitter key is used to disarm the system, if the alarm had been triggered during
the armed period, a 'diagnostic code' will be displayed by the alarm tell tale until the ignition is next switched
on. The flash codes are interpreted as follows:
Single flash followed by 2 second break: Caused by a door, engine lid or front bonnet sensor. A sensing switch
may require attention.
Three flashes followed by 2 second break: Caused by the intrusion sensor. If there are no loose or moving
objects or animals in the vehicle, the sensitivity of the sensor may need adjustment by your dealer.
Four flashes followed by a 2 second break: Caused by the ignition circuit being energised.
Note that, as previously, the security function of the "Lotus Check' scanner tool, is for use only on vehicles
with the base Lucas alarm, unless matching a replacement MEMS 1.9 engine management ECM, or Lucas
5AS security ECM.
Technical Helpline
In case of difficulties with alarm system diagnosis, a Cobra Technical Helpline is available on 01923
479206.
Disconnecting the Vehicle Battery
If the battery is to be disconnected, note the following precaution: Immediately before disconnection,
mobilise the engine using the transmitter or touch key with ignition off, and disconnect the battery within one
minute. If disconnected after this time, or when immobilisation is in effect, the siren will sound for 30 seconds.
Transmitter
casing
Battery•
oh 1 0 2
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