The anti-theft alarm system (DWA) detects and indicates attempted intrusions or manipulation on the vehicle.
The DWA monitors the contacts on the doors, the luggage compartment lid and the engine bonnet as well as the status of the tilt alarm sensor and the interior monitoring.
The anti-theft alarm system consists of the ultrasonic interior movement detector (USIS) with 2 ultrasonic interior sensors and the siren with tilt alarm sensor.
If an attempt is made to break into the vehicle and enter the inside of vehicle, a DWA alarm is triggered.
The tilt alarm sensor (integrated in the siren) monitors the vehicle inclination. The tilt alarm sensor detects whether the vehicle is lifted or towed.
The DWA alarm is acoustic and visual:
The alarm can be coded depending on the country, e.g. the visual alarm (with hazard warning lights; with low beam; with high beam) and the alarm duration (interval: 1 time, 3 times or 8 times).
The following components are described for the anti-theft alarm system (DWA):
The software for the DWA is integrated in the junction box electronics (JBE). The JBE controls the DWA.
All the relevant components of the DWA are directly or indirectly connected (via the K-CAN) to the JBE.
The JBE is also the executing control module for the central-locking drives. The JBE handles activation of all the central-locking drives.
For example, if the CAS control module releases unlocking of the vehicle, the doors are unlocked.
The JBE is a component of the junction box. The junction box is an assembly consisting of the junction box electronics and distribution box. The distribution box supplies the siren with tilt alarm sensor with terminal 30.
The JBE and distribution box cannot be replaced individually.
.
Index |
Explanation |
Index |
Explanation |
|---|---|---|---|
1 |
Comfort Access (CA) |
2 |
Outer door handle on driver's side with door contact on driver's side |
3 |
Bonnet contact switch |
4 |
Antenna diversity |
5 |
Junction box electronics (JBE) in the junction box |
6 |
Voltage distributor in the junction box |
7 |
Siren with tilt alarm sensor |
8 |
Central locking drive, rear lid |
9 |
Ultrasonic interior movement detector (USIS) with 2 ultrasonic interior sensors |
10 |
Door contact on passenger's side as well as (with comfort access) button on outer door handle on passenger's side |
11 |
Footwell module (FRM) |
12 |
Car Access System (CAS) |
13 |
DWA LEDs (3 LEDs) |
|
|
K bus |
Body bus |
K CAN |
Body CAN |
Terminal. 30g |
Terminal 30 |
|
|
The ultrasonic interior movement detector (USIS) with the 2 ultrasonic interior sensors is fitted in the roof operating unit. The 2 ultrasonic interior sensors monitor the vehicle interior. The ultrasonic interior sensors are motion detectors. Movements in the vehicle interior are detected if the reflection of the sonic waves (echo) changes.
Index |
Explanation |
Index |
Explanation |
|---|---|---|---|
1 |
Cover for the roof operating unit |
2 |
Ultrasonic interior movement detector (USIS) with 2 ultrasonic interior sensors |
The siren with tilt alarm sensor issues the acoustic DWA alarm. In addition to the DWA alarm, the siren can issue acoustic acknowledgement on arming or disarming (acknowledgement signal can be coded depending on the country; visual acknowledgement can be set by means of the Central Information Display (CID) and MINI joystick).
The tilt alarm sensor monitors the horizontal position of the vehicle (tilt monitoring of the vehicle in longitudinal direction and lateral direction). This detects the vehicle being raised, for example to steal the wheels or tow the vehicle away.
The parking position is stored using the current longitudinal angle and transverse angle. The tilt alarm sensor determines a new longitudinal angle and transverse angle every 100 milliseconds. If the alarm threshold is exceeded, the junction box electronics (JBE) trigger an alarm. After a first alarm, the alarm threshold is lowered, which leads to a more rapid second alarm activation.
The siren with tilt alarm sensor has a separate power supply (internal batteries) and also monitors the power supply by the vehicle battery. This means that an acoustic alarm can be output even if the supply cable to the siren with tilt alarm sensor has been manipulated.
The internal batteries are not rechargeable (service life at least 10 years or 300 autonomous alarm activations).
Index |
Explanation |
Index |
Explanation |
|---|---|---|---|
1 |
Siren with tilt alarm sensor |
|
|
The bonnet contact switch is connected to the CAS (Car Access System). This means that the engine bonnet is monitored (open or closed). The CAS forwards the message on the K-CAN to the junction box electronics (JBE).
The door contacts on the driver's side and passenger's side are connected to the footwell module (FRM). This monitors the doors (open or closed). The FRM forwards the message on the K-CAN to the junction box electronics (JBE).
The luggage compartment lid lock switch is integrated in the central-locking drive of the luggage compartment lid. This monitors the luggage compartment lid (open or closed). The central-locking drive for the luggage compartment lid is connected to the junction box electronics (JBE).
The footwell module activates the lighting system for the visual DWA alarm. The junction box electronics (JBE) forward the request on the K-CAN to the FRM.
The CAS monitors the central-locking system and is the master control module for all functions run by Comfort Access.
The CAS forwards the signals on the K-CAN to the junction box electronics (JBE).
The CAS also delivers the following signals:
The 3 DWA LEDs indicate the states of the anti-theft alarm system (DWA) visually on the additional instrument. In addition, the 3 LEDs are to simulate the 'breathing' or 'heartbeat' of the MINI for a certain period on arming the DWA before the switch to the usual 'flashing'.
All 3 LEDs only light up during simulation of the ”heartbeat”.
To indicate the current state, only one LED is activated by the JBE.
The DWA LEDs are activated directly by the JBE across 2 lines.
The following displays are possible:
Index |
Explanation |
Index |
Explanation |
|---|---|---|---|
1 |
Additional instrument |
2 |
Display area of the DWA LEDs |
3 |
Steering wheel |
|
|
The following system functions are described for the anti-theft alarm system:
The anti-theft alarm system (DWA) is armed on locking/double-locking the central-locking system.
Locking/double-locking presupposes:
When all of the requirements needed for arming the DWA have been met, but the bonnet or luggage compartment lid or a door is open, although the DWA is armed the lid or door involved is not regarded as a trigger source. An open bonnet / luggage compartment lid or door is only regarded by the DWA as a valid trigger source after locking.
If only the engine bonnet is open on arming the DWA, the interior monitoring is activated as usual.
In the same way as the interior monitoring, the tilt monitoring only begins after the doors and bonnet/boot have been closed. After activating, the tilt alarm sensor first performs a reference run that takes 30 seconds. The tilt monitoring only begins after the reference run.
if the luggage compartment lid is opened during the reference run, the reference run is interrupted. After closing the luggage compartment lid, the reference run is restarted.
If a faulty door contact or lid contact is detected, it is assumed to be closed.
Unlocking the driver's door or the passenger's door disarms the alarm system. As visual acknowledgement, the DWA LED is switched off and the hazard warning system flashes twice. Depending on the country version, the siren can also issue a short sound signal.
The luggage compartment lid can be unlocked and opened using the remote control key without triggering an alarm even if the antitheft alarm is armed. When the luggage compartment lid is opened, the interior and tilt monitoring are disabled.
The interior and tilt monitoring are reactivated as soon as the luggage compartment lid is closed again. After closing the luggage compartment lid, the reference run is started.
A DWA alarm is triggered if the armed anti-theft alarm system detects an alarm status.
The following triggers lead to a DWA alarm:
When a DWA alarm is triggered, the alarm system control module activates the loudspeakers of the siren. Simultaneously, the alarm system control module sends an alarm signal on the K-CAN. The footwell module activates the visual alarm via the lighting system.
Alarm duration:
The DWA alarm is executed once, i.e.:
The DWA alarm is executed up to 3 times, i.e.:
The alarm can be coded depending on the country,
A DWA alarm is immediately cancelled under the following conditions:
When the DWA is armed, the junction box electronics monitor the on-board supply voltage in a range between 6.5 Volts and 18 Volts with regard to the following points:
The voltage thresholds for overvoltage and undervoltage must be detected for at least 250 milliseconds.
Deactivating of the passenger compartment and tilt monitor makes sense under the following conditions:
The interior and tilt monitoring is disabled if the command ”Lock/double-lock” is executed twice within 10 seconds (e.g. with the remote control).
The DWA LED indicates the deactivation by flashing 3 times within one second and then simulating the 'heartbeat' for a certain time. When the time elapses, the DWA LED flashes continuously.
If the siren fails during the alarm, only a visual DWA alarm is displayed.
The junction box electronics send a message across the K-CAN to the footwell module (FRM).
The anti-theft alarm system (DWA) can be armed and disarmed using both the door lock (with integrated key in the remote control) and the remote control (= cross-wise operation).
Due to insurance regulations, cross-wise operation is excluded in some countries.
In the absence of cross-wise operation, the DWA can be armed with the integrated key via the door lock but not disarmed via the door lock. (On some national versions, the alarm system is triggered when the door lock is used for unlocking.)
Disarming is only possible using the remote control.
The cross-wise operation function can be coded in the Car Access System (CAS).
With Comfort Access, the luggage compartment can be opened without active use of the identification sensor. Condition: the identification sensor is a maximum of 1.5 metres away from the antenna in the rear bumper.
If there is an identification sensor in the luggage compartment on closing the luggage compartment lid (and no authorized identification sensor outside), the luggage compartment lid is opened again. The attention of the user is drawn to the anti-theft alarm system as follows:
Reading the alarm memory
The last 10 the DWA alarms are stored in the alarm memory of the alarm system control module. For each alarm, the following supplementary information is also stored:
Alarm duration:
The DWA alarm is executed up to 8 times (instead of once or up to 3 times), i.e.:
Panic mode
In the event of a threat from the outside or in the event of an accident, the panic mode can be used to attract the attention of others (DWA alarm).
The assignment of the remote control can be changed by coding.
The button for luggage compartment lid unlocking on the remote control then functions as the button for the panic mode. For this, the button for the panic mode must be pressed for 3 seconds.
The panic mode can be triggered independently of the DWA status (armed/disarmed). Pressing any button on the remote control terminates the panic mode.
The panic mode is not indicated by the DWA LEDs and/or the DWA LEDs do not change their current display status.
The alarm duration for the visual alarm in the panic mode is limited to 6 minutes.
The alarm duration for the acoustic alarm in the panic mode is unlimited (until the batteries are flat).
No liability can be accepted for printing or other faults. Subject to changes of a technical nature