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[Solved] Seat Leon 3 FR: Parking Sensors Not Working, No Error Shown – Possible Causes & Solutions

misieq1993 19035 6
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  • #1 17144384
    misieq1993
    Level 7  
    Posts: 21
    When I start the car, it throws me the information "signaling when parking. the function is currently unavailable.
    After pressing the parking assist a continuous signal and after a while nothing happens.

    Someone had a similar problem? Original sensors - it is possible that one of the sensors does this if one piece is damaged? The error does not show, and does not work front and back ..
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    #2 17144524
    kowal5
    Level 18  
    Posts: 171
    Help: 25
    Rate: 68
    Yes. If one of the sensors fails, the entire system will stop working. Connect the packaging support system to the appropriate diagnostic equipment to determine the cause of the failure.
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  • #3 17144669
    misieq1993
    Level 7  
    Posts: 21
    I have no other diagnostic device. But I have sensors from the second bumper, because it was replaced - I will try to replace it, maybe it will work.

    I understand that if one of the front is damaged, the back is also inactive in the entire system?
  • #4 17144771
    yanes
    Level 33  
    Posts: 1589
    Help: 204
    Rate: 597
    This "diagnostic device" is probably a VCDS cable, maybe one of your colleagues will have it connected to you. You can check by hearing, a good sensor ticks every half second, or put your finger on it, you should feel a tingling sensation.
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  • #5 17144982
    misieq1993
    Level 7  
    Posts: 21
    It's interesting - tomorrow I will check according to what you write, i.e. by hearing and touching :) Will they tick even inactive if I get close to them to check? Because the system cannot be turned on since the message says that it is unavailable.
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    #6 17145008
    yanes
    Level 33  
    Posts: 1589
    Help: 204
    Rate: 597
    I have never checked it myself, but it seems to me that the reverse should be on or press the button in the cabin.
  • #7 17149934
    misieq1993
    Level 7  
    Posts: 21
    It worked - they all tick after turning on the parking mode as you wrote :)

    It's good that I did not start to unscrew the bumper. I went to the guy under the vaga and it turned out that there was a mistake. Once removed, everything works normally
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Topic summary

✨ The discussion revolves around a malfunctioning parking sensor system in a Seat Leon 3 FR, where the user experiences a message indicating that the parking function is unavailable. It is noted that if one sensor fails, the entire system may stop working. Users suggest using diagnostic equipment, such as a VCDS cable, to identify the issue. The author later discovers that all sensors function correctly after checking their operation and consulting a technician, who confirmed a previous error that was resolved.
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