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ACC Sensor blocked - Focus MK4

Nezer
Nezer
in Ford Focus Club

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Hi

Fresh owner of the used Focus Mk4. The issue is that ACC doesn’t always work. Usually, after a fresh start it works, but after some time or if I turn it off and on few times I get the ACC sensor blocked message. Could it be that the licence plate is mounted too low? Looking at other Focus cars it’s usually higher. It looks like more than a half of the sensor is blocked in my car?

att.OOnYsgNkhwcpncnUEQ8v9_Qq0aajyTszmxW62_KFPrE.jpeg

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    Could very possibly be the issue - try temporarily relocating the plate and holder to see if the issue clears 👍

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    Is it a metal number plate?  I wouldn't expect a plastic one to affect the radar sensor.

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    • Author
    Just now, TomsFocus said:

    Is it a metal number plate?  I wouldn't expect a plastic one to affect the radar sensor.

    Yes, the plate is a metal one, only the frame is plastic. Will try to put it a bit higher tomorrow as Troy said

     

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    • The Digestive Forum Roundup (24th May - 31st May 2026)

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      The Digestive Forum Roundup (24th May - 31st May 2026) We hope this email finds you well and enjoying your week. As always, our forum has been buzzing with activity, so we’ve compiled the highlights for you. Plenty of interesting discussions are taking place, especially around the Ford Focus and Fiesta models. Starting off with the Focus, many members have been discussing issues with the Emergency Call System, particularly in the Mk4 model. PLB raised concerns about persistent malfunctions, a se
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