System Components

Remote Control Transmitter(s)

Two transmitters are supplied with each kit.

The TX button is used for the following functions:

arm/disarm system lock/unlock central locking panic mode

The LED illuminates at the same time these functions are selected.

The transmitter is powered by a replaceable lithium battery that will normally provide one year's worth of use.

The transmitters are coded to the control unit via Micro Chips.

Replacement/additional transmitters are supplied non-coded. For that reason, replacement Micro Chips are available.

Details on battery and Micro Chip replacements are supplied later in this bulletin.

Control Unit

The control unit monitors inputs from the doors, glass breakage detector and trunk (optional).

Signals sent by the transmitters are received (via a plug in antenna) by the control unit. The control unft processes these inputs with the resultant desired action.

Additional features on the control unit allow for vehicle differences and customer preferences to be selected.



GLASS BREAKAGE SENSITIVITY SWITCH

This switch is located on the front panel of the control unit. It is initially set at "HI" (high) position at the time of manufacture. However, it can be set to "L" (low) position for lower sensitivity if the customer experiences false alarm triggering due to noisy environmental factors.



PROGRAMMABLE DIP SWITCHES

These switches are located inside the control unit and are accessible by removing the square black panel on the back of the control unit.
Sensor Cancellation Switch:

In the "ON" position, a tripped sensor will activate the alarm for a maximum of 10 minutes; then that specific sensor will no longer be capable of triggering the system until the system is reset. However, all other alarm sensors will still function. In the "OFF" position, any sensor is capable of activating the alarm indefinitely. This switch is initially set in the "ON" position at the time of manufacture.

Arm/Disarm Verification Switch:

If the switch is set to "ON", the siren will emit one "chirp" when arming and two "chirps" when disarming. In the "OFF" position there will be no "chirps" and the arm/disarm status of the alarm will be indicated only by the dash mounted LED. The switch is initially set at "ON" position at the time of manufacture.
Convertible Glass Breakage Sensor Sensitivity Switch:

For alarm installation in convertible vehicles only set switch to "LOW" position. This will lower the alarm sensitivity to external noises. This is necessary to prevent false triggering of the alarm due to less sound insulation of the fabric convertible top. This switch is initially set at "NORMAL" position at the time of manufacture and should be left in this position for all installations except convertibles.

SIREN

A siren capable of 110 dB is mounted in the engine compartment. In addition to being activated for 60 seconds when the alarm has been tripped, the alarm is also used for arm/disarm verification.



Status LED (Light Emitting Diode)

The staus LED is mounted on the dashboard and used by the vehicle owner for alarm status monitoring, tripped warning and tripped sensor identification.

Additionally, the LED when flashing, will warn a would-be thief that your vehicle is protected by the BMW security system.

Glass Breakage Detector (Microphone)

This detector is mounted on the dashboard. It detects the sound of breaking glass or metallic sounds and triggers the alarm. Its sensitivity can be set at HIGH or LOW by the switch in the main unit during installation.