Alarm problems

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The alarm activates for no reason

Volkswagen Passat 2003 Estate  104000 miles
The alarm activated last night and today without anyone near the car. I turned it off and on again and after a short while it went into alarm again. Graham
Gb01 from United Kingdom 7 years ago  
GB
9 reports 
Andybaron from United Kingdom 6 years ago
Most likely bad connections to or from your Alarm system or an actual fault with your alarm it’s self hope this helps. You could disable the alarm system with diagnostic equipment for vw pretty certain I could do this.
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Been having some electrical difficulties

Volkswagen Passat 2000 1.8 L turbo engine Passat 187100 miles
Every time I try and get in the car the alarm goes off when I turn the key on and I can’t figure out how to reset the alarm or turn the alarm off so I can get the car to start
Dyann from United States 4 years ago  
DY
2 reports 
Andybaron from United Kingdom a year ago
Might be an idea to check the passenger footwell for water you have a control module buried in the passenger floor this is prone to taking in water and damaging the ccm connection this can cause an array of issues with electronics id recommend removing floor carpet passenger side will require removal of some interior trim and check it’s not swimming if all is dry then the issue is with the alarm it’s self or it’s something stupid like a flat battery what’s causing your problems or a parasitic battery draw most commonly caused by sencondary air injection pump. I hope this helps.
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Wont start

Volkswagen Passat 2005  90000 miles
Once you turn the key the alarm keeps going off. The car starts and knocks off right away
Eggy from United Kingdom 6 years ago  
EG
1 report 
Andybaron from United Kingdom 6 years ago
Sounds most likely a immobiliser fault or a problem with the key or transponder have it diagnosed.
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