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Anti theft system

This is a discussion on Anti theft system within the Mercedes-Benz CLA45 AMG forums, part of the Mercedes-Benz CLA Model Specific Forums category; Got to school (Fullerton College in California), nothing wrong with the car. I go to class, and when I return to the car, I get ...

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Thread: Anti theft system

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    Newbie RiverPlate's Avatar
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    Anti theft system

    Got to school (Fullerton College in California), nothing wrong with the car.
    I go to class, and when I return to the car, I get this screen.
    Can’t listen to music or anything.

    What triggers this?
    What makes it go away?
    What to do?

    I feel like I need to call an exorcist, with all the bad luck I’m having with the car these past few weeks.
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    jmc
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    might be a temporary glitch ... the head unit lost connection with the rest of the system
    try at "reboot" -> press and HOLD the COMAND power button for at least ten seconds ... or until it restarts
    hope that works

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    Newbie RiverPlate's Avatar
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    Quote Originally Posted by jmc View Post
    might be a temporary glitch ... the head unit lost connection with the rest of the system
    try at "reboot" -> press and HOLD the COMAND power button for at least ten seconds ... or until it restarts
    hope that works
    I just went home and the next day when I got into the car the message was no longer there. I’m scared to think someone tried to break in.

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    Doubt its related to a breakin ...

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    happened to me a few years ago, turned off the car , then turned back on, haven't seen it since

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    I'm puzzled why everyone rejects the idea that it means what it says: anti-theft protection was activated.
    I took European Delivery and drove through four countries in my limited edition Universe Blue CLA 250.

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    jmc
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    Quote Originally Posted by 2katman2 View Post
    I'm puzzled why everyone rejects the idea that it means what it says: anti-theft protection was activated.
    Oh for this issue it is an intermittent optical signal in the fiber loop (glitch surge break etc) and it triggers the head unit into thinking someone is trying to yank it out ... happens when either one of the signaling LEDs misses a signal pulse due to a rise time issue but just for that one signal bit
    If someone does try forced entry a message will show in the gauge cluster screen not on the big screen and a log entry goes into the blackbox partition on the harddrive
    Rapidfirerob likes this.

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