Anti-theft alarm (ATA [EDW]) Diagnosis troubleshooting - AD80.50-P-3000CW

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MODEL 172, 204, 207, 212, 218, 231 with CODE (551) Anti-theft alarm system (ATA [EDW])

	Anti-theft alarm (ATA [EDW]) Diagnosis previous knowledge		AD80.50-P-2000CW
	After receiving a complaint regarding "false alarms", perform troubleshooting.		AD80.50-P-5000CW
	Before checking for proper function, call up and print out the alarm source memory.	The alarm source memory overview can be called up and printed out in Xentry Diagnostics under the following path: "Rear SAM control unit" "Actual values" "ATA [EDW] alarm sources" "Overview" Call up the individual data records for specific details.	AD00.00-P-2000-04A
	Check for proper function only in regard to the present complaint.
	Operational check
Test step/scope of testing	Operation/requirement	Specified value/note	Possible cause/remedy
1 Alarm actuation via towing sensor (with code (882) Interior monitoring (with ATA only))	Remove transmitter key Close all doors and trunk lid or rear-end door Lock vehicle with transmitter key Lift vehicle on one side after approx. 3 min.
		ATA [EDW] function display flashes continuously
		The alarm should trigger as soon as one wheel is lifted off the ground.	Troubleshooting: AD80.50-P-5000CW
2 Deactivate towing sensor (with code (882) Interior monitoring (with ATA only))	Remove transmitter key Momentarily press tow-away protection button Close all doors and trunk lid or rear-end door Lock vehicle with transmitter key Lift vehicle on one side after approx. 3 min.
		LED in tow-away protection button illuminates for approx. 2 s
		ATA [EDW] function display flashes continuously
		The alarm should not trigger when the vehicle is lifted.	Troubleshooting: AD80.50-P-5000CW
3 Alarm actuation via interior protection (with code (882) Interior monitoring (with ATA only))	Close side windows, if necessary sliding roof, panoramic roof, soft top or Vario roof Remove transmitter key Open driver, close rotary tumbler on door lock and lean driver door against door frame Close all other doors and trunk lid or rear-end door Lock vehicle with transmitter key Open driver door after approx. 3 minutes and move arm up and down above driver seat.	When the vehicle is completely closed the interior protection has a higher sensitivity.
		ATA [EDW] function display flashes continuously
		An alarm is triggered.
		With code (889) Keyless Go, do not open driver on door handle, otherwise the vehicle can be unlocked the ATA [EDW] deactivated.	Troubleshooting: AD80.50-P-5000CW
4 Deactivate interior protection (with code (882) Interior monitoring (with ATA only))	Close side windows, if necessary sliding roof, panoramic roof, soft top or Vario roof Remove transmitter key Momentarily actuate interior protection button Open driver, close rotary tumbler on door lock and lean driver door against door frame Close all other doors and trunk lid or rear-end door Lock vehicle with transmitter key Open driver door after approx. 3 minutes and move arm up and down above driver seat.
		LED in interior protection button flashes for approx. 2 s
		ATA [EDW] function display flashes continuously
		The alarm should not be triggered by movement in the passenger compartment.
		With code (889) Keyless Go, do not open driver on door handle, otherwise the vehicle can be unlocked the ATA [EDW] deactivated.	Troubleshooting: AD80.50-P-5000CW
5 Glass breakage sensors (on model 204.2/9, 212.2 with code (882) Interior monitoring (only with ATA [EDW]))	Remove door lining on tailgate Remove transmitter key Close door lock rotary tumbler on rear-end door Close all doors Lock vehicle with transmitter key Disconnect connector on glass breakage sensor approx. 1 min. from rear window		Model 204.2: AR72.20-P-3520CX Model 204.9: AR72.20-P-3520CY Model 212.2: AR72.20-P-3520ES
		ATA [EDW] function display flashes continuously
		An alarm is triggered.	Troubleshooting: AD80.50-P-5000CW
6 Alarm triggering via driver door	Open driver door window Remove transmitter key Switch off Interior protection (with code (882) Interior monitoring (only with ATA [EDW])) Close all doors and trunk lid or rear-end door Lock vehicle with transmitter key Open driver door with inside door handle after approx. 15 s	With code (885) Increased theft protection, the driver door can only be opened with the emergency key.
		ATA [EDW] function display flashes continuously
		An alarm is triggered.	Troubleshooting: AD80.50-P-5000CW
7 Alarm triggering via passenger door	Open front passenger door side window Remove transmitter key Switch off Interior protection (with code (882) Interior monitoring (only with ATA [EDW])) Close all doors and trunk lid or rear-end door Lock vehicle with transmitter key Open front passenger door with inside door handle after approx. 15 s	With code (885) Increased theft protection, function check is not possible.
		ATA [EDW] function display flashes continuously
		An alarm is triggered.	Troubleshooting: AD80.50-P-5000CW
8 Alarm triggering via left rear door (model 204.0/2/9, 212, 218)	Open left rear door side window Remove transmitter key Switch off Interior protection (with code (882) Interior monitoring (only with ATA [EDW])) Close all doors and trunk lid or rear-end door Lock vehicle with transmitter key Open left rear door with inside door handle after approx. 15 s	With code (885) Increased theft protection, function check is not possible.
		ATA [EDW] function display flashes continuously
		An alarm is triggered.	Troubleshooting: AD80.50-P-5000CW
9 Alarm triggering via right rear door (model 204.0/2/9, 212, 218)	Open right rear door side window Remove transmitter key Switch off Interior protection (with code (882) Interior monitoring (only with ATA [EDW])) Close all doors and trunk lid or rear-end door Lock vehicle with transmitter key Open right rear door with inside door handle after approx. 15 s	With code (885) Increased theft protection, function check is not possible.
		ATA [EDW] function display flashes continuously
		An alarm is triggered.	Troubleshooting: AD80.50-P-5000CW
10 Alarm triggering via trunk lid (model 172, 204.0/3, 207, 212.0, 218.3, 231)	Close all doors and trunk lid Lock vehicle with transmitter key Open trunk lid with emergency key after approx. 15 s.
		ATA [EDW] function display flashes continuously
		An alarm is triggered.	Troubleshooting: AD80.50-P-5000CW
11 Alarm triggering via rear-end door (model 204.2/9, 212.2)	Remove transmitter key Switch off Interior protection (with code (882) Interior monitoring (only with ATA [EDW])) Close doors Enter cargo area and close rear-end door Lock vehicle with transmitter key Open rear-end door via emergency actuation after approx. 15 s
		ATA [EDW] function display flashes continuously
		An alarm is triggered.	Troubleshooting: AD80.50-P-5000CW
12 Alarm triggering via engine hood	Open driver door window Remove transmitter key Switch off Interior protection (with code (882) Interior monitoring (only with ATA [EDW])) Close all doors and trunk lid or rear-end door Lock vehicle with transmitter key Open engine hood through open side window after approx. 15 s
		ATA [EDW] function display flashes continuously
		An alarm is triggered.	Troubleshooting: AD80.50-P-5000CW
13 Alarm actuation via glove box (Model 172)	Enter vehicle Close doors Remove transmitter key Switch off Interior protection (with code (882) Interior monitoring (only with ATA [EDW])) Open glove compartment. Actuate switch in glove box by hand and hold Lock vehicle with transmitter key Release switch in glove box after approx. 15 s
		ATA [EDW] function display flashes continuously
		An alarm is triggered.	Troubleshooting: AD80.50-P-5000CW
14 Alarm triggering via center console stowage compartment (model 172, 231)	Enter vehicle Close doors Remove transmitter key Switch off Interior protection (with code (882) Interior monitoring (only with ATA [EDW])) Open stowage compartment in center console Actuate switch in center console stowage compartment by hand and hold Lock vehicle with transmitter key Release switch in center console stowage compartment after approx. 15 s
		ATA [EDW] function display flashes continuously
		An alarm is triggered.	Troubleshooting: AD80.50-P-5000CW
15 Trigger panic alarm (with code (763) Radio remote control with panic switch)	Close all doors and trunk lid or rear-end door Lock vehicle with transmitter key Press "Panic button" on transmitter key	An alarm is triggered.	Troubleshooting: AD80.50-P-5000CW
16 Siren self-alarm (model 172, 207.4, 218, 231 except , ; Model 204, 207.3, 212 up to 31.5.10 or as of 1.6.10 except , )	Expose access to alarm siren (loosen right front fender liner in area of A-pillar and press to side) Remove transmitter key Close all doors and trunk lid or rear-end door Lock vehicle with transmitter key Disconnect connectors from alarm siren after approx. 15 s	The alarm is very loud due to the proximity to the alarm siren. Wear ear protection.
		An acoustic alarm is triggered.
		To terminate the alarm reconnect the plug connector and then unlock the vehicle with the transmitter key.	Troubleshooting: AD80.50-P-5000CW