Trigger anti-theft alarm system, function

P80.50-2491-09

Shown on vehicles up to 30.6.06 with code (882) Interior monitoring (with ATA only)

1 Alarm actuation by interior protection

2 Alarm actuation by opening door

3 Alarm actuation by opening engine hood

4 Alarm actuation by opening trunk lid

5 Alarm triggering by towing sensor

6 Alarm actuation by line interruption

7 Switching acoustic alarm

8 Switching on country-dependent optical alarm

9 Switching interior lighting

E3e7 Inner left turn signal lamp (except )

E4e1 Outer right turn signal lamp (except )

E4e2 Outer right taillamp, parking lamp, rear fog lamp (only )

E4e5 Inner right taillamp, rear fog lamp (only )

E4e7 Inner right turn signal lamp (except )

E5/1 Left front fog lamp (only )

E5/2 Right front fog lamp (only )

E6/5 Left outside mirror turn signal lamp (except )

E6/6 Right outside mirror turn signal lamp (except )

E15/3 Rear interior lamp

CAN Controller area network bus class B (interior compartment) (CAN B)

A1 Instrument cluster (except )

A1e1 Left turn signal indicator lamp (except )

A1e2 Right turn signal indicator lamp (except )

B33 ATA [EDW] inclination sensor

E1e5 Left turn signal lamp (except )

E2e5 Right turn signal lamp (except )

E3e1 Outer left turn signal lamp (except )

E3e2 Outer left taillamp, parking lamp, rear fog lamp (only )

E3e5 Inner left taillamp, rear fog lamp (only )

E15/3b2 Interior protection sensor

E15/3e3 Dome lamp

H3/1 Alarm signal horn with additional battery

N10/1 Driver-side SAM control unit with fuse and relay module

N10/2 Rear SAM control unit with fuse and relay module

S17/3 Left front door contact switch

S17/4 Right front door contact switch

S17/5 Left rear door contact switch

S17/6 Right rear door contact switch

S62 EDW hood switch

S88/4 Pawl rotary tumbler switch

N10/11 Passenger-side SAM control unit

N69/1 Left front door control unit (except )

N69/2 Right front door control unit (except )

N70 Overhead control panel control unit

N70e1 Front dome lamp

 Function with country-specific restrictions, see notes in parentheses

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 On vehicles with code (494) USA version or code (498) Japanese version, the components ATA inclination sensor, interior protection sensor and interior protection switch will be discontinued as of 1.07.06.

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Function requirements:

The anti-theft alarm system (ATA) must be activated.

Alarm actuation via contact switch

If one of the switches terminates its non-actuated state for longer than 0.5 s, an acoustic and visual alarm is output.

The signals are read in by the following switches:

 Front door contact switch

 Rear door contact switch

 EDW hood switch

 Pawl rotary tumbler switch

Alarm actuation with alarm signal siren

The alarm signal horn is actuated cyclically by the rear SAM control unit If no answer is received from the alarm signal horn within approx. 1 s, an alarm is triggered.

The alarm is only output visually, as the alarm signal horn cannot be contacted If the alarm signal horn detects the loss of the power supply or the communication it automatically outputs a visual alarm

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Alarm triggering by towing sensor

The rear SAM control unit checks the input of the ATA inclination sensor several times per second. If the ATA inclination sensor recognizes a position change of the vehicle, an acoustic and visual alarm is triggered.

If the position change (e.g. tire defect) is very slow, the reference position is adapted to the vehicle position to avoid the ATA inclination sensor outputting a false alarm.

Alarm actuated by interior protection with CODE (882) Interior monitoring (with ATA only)

The alarm decision is made under consideration of the duration and the speed of motion in the passenger compartment by the interior motion sensor. If the interior motion sensor recognizes motion in the passenger compartment, an acoustic and visual alarm is triggered

 On vehicles with code (494) USA version or code (498) Japanese version, the tow-away protection and interior protection functions will be discontinued as of 1.7.06.

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Alarm actuation caused by power loss

If the power supply is interrupted when the ATA is armed, an acoustic alarm is triggered.

The power is supplied by the additional battery of the alarm signal horn

The rest of the ATA system is out of operation. When the supply voltage returns, the rear SAM control unit arms the ATA completely.If the acoustic alarm has already expired when the power is reconnected, the optical alarm does not start. However, if the acoustic alarm is still active, the optical alarm is output completely.

Alarm actuation when voltage is too low

The operating voltage of the ATA is between 8.5 V and 15.5 V. It is possible to drop below a value of 8.5 V when the battery discharges continuously If the operating voltage is below 8.5 V, it is no longer possible to output a visual alarm. Due to this fact, an ATA alarm can no longer be output according to the definition (optically or visually).

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Alarm memory

Triggered alarm (max. 15) are stored in the rear SAM control unit and the central gateway control unit. The alarm memory can be read out with STAR DIAGNOSIS. The alarm memory of the diagnosis system in the central gateway control unit offers additional information such as the window position and the operating voltage.

Repeated alarm

An alarm is only repeated when a new alarm procedure is accomplished after the active acoustic alarm is terminated.

Triggering the alarm again results in an extension of the optical and/or acoustic alarm. In the case of repetition the same activation times apply as for a new actuation.

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Acoustic alarm

The acoustic alarm is output via the alarm signal siren. The type of the acoustic alarm depends on the triggering criteria and national coding

These can be programmed and are stored as maps in the alarm signal horn memory

Visual alarm

All visual signals are output via the vehicle and passenger compartment lighting. The alarm output is controlled by the rear SAM control unit.

The type and duration of the visual alarm are stored as maps in the rear SAM control unit. The ATA alarm requests have priority over all normal light requests.

The optical signals (except ) are output via:

 Left and right turn signal lamp

 Left and right turn signal lamp indicator lamps

 Left and right outside mirror turn signal lamps.

The optical signals (only ) are output via:

 the taillamps, parking lamps, rear fog lamps and

 fog lamps.