Lotus Elise Service Notes page 358

MN.1 - VEHICLE SECURITY ALARM (Standard Lucas & Cobra 6019HF option)
Prior to October '97, Elise models may be equipped with one of two levels of alarm system. The base
system uses a Lucas 5AS module which is electronically matched to the engine management ECM to provide
a passive immobiliser function, and operates the vehicle horn if either door is opened, or the ignition circuit
energised. Cars with this level of alarm may be identified by the 'Lucas' branded transmitter keys.
The optional factory alarm upgrade, uses a Cobra Goldline 6019HF system which incorporates passive
immobilisation, selectable microwave intrusion sensing, door, bonnet and boot lid sensing, a self powered
siren, and dynamic coding of the transmitter frequency. Cars with this level of alarm may be identified by the
red and blue transmitter buttons, and the microwave unit mounted on the rear bulkhead between the seats.
Whichever system is fitted, one of the two battery powered electronic transmitter keys provided, should
be kept safe for use in an emergency, and the batteries of both keys renewed at six monthly intervals to ensure
continuity of operation.
Vehicle Security Alarm - Lucas 5AS Standard Fitment
When armed, the vehicle alarm system enhances theft protection of the car by pulse sounding the horn
if either door is opened, or the ignition circuit is energised. Additional protection is provided by an 'immobilisa-
tion' feature which disables the engine cranking and ignition circuits when the alarm is armed, whilst 'passive
immobilisation' ensures that this feature functions automatically under certain conditions (see below).
Passive Immobilisation: Engine cranking and running are disabled automatically 30 seconds alter the follow-
ing sequence of events:
The ignition is switched from on to off;
The driver's door is opened.
A warning that immobilisation is in effect, is provided by the 'Alarm' tell tale in the instrument pack
flashing on once per second (continuously lit if a door is open).
In order to mobilise the engine, press once the smooth button on the transmitter key; the tell tale will
extinguish and the engine may be started. If the key is already turned to the ignition position ('II'), either of the
two buttons on the transmitter key may be pressed to mobilise.
Note that for only the German market, if the ignition is not switched on within 4 minutes 15 seconds of the
alarm being disarmed, immobilisation will be automatically activated.
To Arm the Alarm: Remove the ignition key, close (and lock) both doors, and press once the transmitter key
button embossed with the padlock symbol. This command will be acknowledged by:
The hazard lamps flashing three times;
The 'Alarm' tell tale in the instrument pack flashing rapidly for 10 seconds (the arming period), then
flashing once per second.
To Disarm the Alarm: Press once the transmitter key smooth button. This command will be acknowledged by
a single flash of the hazard lamps, and the alarm tell tale going out. The same disarming command applies if
the alarm has been triggered, and the horn is sounding.
Note that some variations to the alarm operation may apply in certain territories, according to local
regulations.
Transmitter Battery Replacement: Each of the transmitter keys is powered by a Panasonic CR2032 3V
battery. With normal use, these should last between 6 and 9 months. To ensure continuity of trouble free
operation, it is recommended to replace both batteries at 6 monthly intervals:
Standard
alarm
transmitter
key
Page 358 1998 / 03