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2018 Toyota Prius 4 Touring= Alarm?

Discussion in 'Gen 4 Prius Accessories and Modifications' started by Vrooom23, Jul 26, 2023.

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  1. Vrooom23

    Vrooom23 New Member

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    I have a 2018 Toyota Prius Four Touring. The fob has a red button that has an alarm and a lock/unlock button.
    Today while my car was locked, the window was broken and theft opened the door to break into the car. Should the car have a stock alarm? Should the alarm have gone off?
     

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    #1 Vrooom23, Jul 26, 2023
  2. Tideland Prius

    Tideland Prius Moderator of the North
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    No. What you're thinking of is an extra "glass breakage sensor" that is sometimes offered as a dealer-installed accessory on some Toyotas.

    The standard Toyota "theft-deterrent system" is tied to the door locks and will only sound if the door locks are forcibly unlocked (or the door is forcibly opened).
     
    #2 Tideland Prius, Jul 26, 2023
  3. The Professor

    The Professor Senior Member

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    Wait, so the factory fitted alarms in the US don't have ultrasonic sensors to detect motion inside the cabin?
     
    #3 The Professor, Jul 26, 2023
  4. Tideland Prius

    Tideland Prius Moderator of the North
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    Neither that nor a glass breakage sensor.
     
    #4 Tideland Prius, Jul 29, 2023
  5. Vrooom23

    Vrooom23 New Member

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    I appreciate your response! That sounds ridiculous, so I'm not quite sure I understand the purpose of the alarm.
     
    #5 Vrooom23, Jul 29, 2023
  6. Tideland Prius

    Tideland Prius Moderator of the North
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    It’s for that one specific scenario where a thief would use a coat hanger or similar to unlock the door from the outside. It also does include an engine immobiliser.
     
    #6 Tideland Prius, Jul 29, 2023
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  7. jerrymildred

    jerrymildred Senior Member

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    In fact, I usually refer to that red blinking light on the dash as the "immobilizer" light.
     
    #7 jerrymildred, Jul 29, 2023
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  8. Tideland Prius

    Tideland Prius Moderator of the North
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    I think that’s the main function. The fact that it’s partially associated with an alarm is a byproduct.
     
    #8 Tideland Prius, Jul 29, 2023
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