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Identifying Mysterious Glowing Diode in Side Pillar of Passat: Purpose and Placement

ciaglejade 55937 10
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  • #1 8228289
    ciaglejade
    Level 10  
    I was carrying this indicator in the trunk and after 2 years I found a glowing diode in the side pillar next to the driver at the fastening of the belts.

    Identifying Mysterious Glowing Diode in Side Pillar of Passat: Purpose and Placement

    It fit in the hole so I pushed it in but I'm not sure if that's where it is and what it signals.
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  • #2 8231059
    Spacewalker
    Level 33  
    This is when you leave the dog in the car (of course with the windows down) and close the car and you have an alarm, this is how you deactivate the motion detectors.
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  • #3 18615686
    Piotrekkoz123
    Level 3  
    How to deactivate them? How to use this button?
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  • #4 18615851
    tzok
    VIP Meritorious for electroda.pl  
    You press before closing the car door. The light on the button should light up.
  • #5 18616181
    Piotrekkoz123
    Level 3  
    tzok wrote:
    You press before closing the car door. The light on the button should light up.


    I press it but nothing happens the toy car on the button is lit red after closing in the cabin the alarm does not turn on and the computer shows the sensor of the vehicle's interior surveillance break in the circuit are these lights in the back or the button is damaged?
  • #6 18616408
    tzok
    VIP Meritorious for electroda.pl  
    Piotrekkoz123 wrote:
    the computer shows the vehicle's interior surveillance sensor open circuit
    So the interior surveillance sensor is faulty...
  • #7 18616411
    Piotrekkoz123
    Level 3  
    tzok wrote:
    Piotrekkoz123 wrote:
    the computer shows the vehicle's interior surveillance sensor open circuit
    So the interior surveillance sensor is faulty...


    Interior surveillance sensor is which one is it?
  • #8 18616879
    tzok
    VIP Meritorious for electroda.pl  
    Active ultrasonic (motion) sensor.
  • #9 18617038
    Piotrekkoz123
    Level 3  
    [quote="tzok"]Active ultrasonic (motion) sensor.[/quote
    I know well, but are these sensors what are in the lamps in the back?
  • #10 18617078
    tzok
    VIP Meritorious for electroda.pl  
    Motion sensors in the cabin. I don't know where they are in the Passat, but definitely somewhere near the windshield, on the pillars or in the roof console.
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  • #11 18617836
    carrot
    Moderator of Cars  
    Either the sensors are in the side lamps or in the middle pillars at the top
    Lamps 1J0 951 171D and 1J0 951 172F
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Topic summary

The discussion revolves around a glowing diode found in the side pillar of a Volkswagen Passat, which the user discovered after two years. The diode is believed to be related to the vehicle's interior surveillance system, specifically for deactivating motion detectors when leaving pets in the car. Users provided insights on how to use the diode, indicating it should be pressed before closing the car door to activate or deactivate the alarm system. There were mentions of potential issues with the interior surveillance sensor, including a possible fault if the alarm does not activate. The active ultrasonic motion sensors are typically located near the windshield, on the pillars, or in the roof console, with some users speculating about their placement in the side lamps or middle pillars.
Summary generated by the language model.
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