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2007 Focus Bonnet Warning Light

cheese30
cheese30
in Maintenance / Servicing / MOT Discussions

Featured Replies

Hi All

I have just opened the bonnet on my 2007 focus estate 1.8 tdci and now the warning light on the dash won't go off it just says "bonnet open" the Bonney closes fine and you can hear it lock, I have tried WD40 in the switch but still stays on.

Any suggestions welcome

Sent from my iPhone using Ford OC

  • Quote


    WD40 on a switch is a bad idea, it can damage the switch and cause you more issues than anything else!

    I suspect you will need to replace the switch itself if its still not working.

  • Quote
    • Author

    Thanks for your reply il grab one off eBay

    Sent from my iPhone using Ford OC

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    Just thinking about it, you will likely need a full assembly, as the switch I believe is integrated into this.

  • Quote
    • Author

    Just had a look at it and think I'm going to have a go at taking that unit apart and recon it see if that does the job

    Sent from my iPhone using Ford OC

  • Quote

    worth a shot!

  • Quote
    • Author

    Well took the locking unit apart cleaned it out the re-greased it and now it's working again can't see what I really done but it works so no complaints

    Thanks for your replys

    Sent from my iPhone using Ford OC

  • Quote

    Good Result Bob!

  • Quote
    • 1 year later...

    I have the same issue and can confirm, unfortunately, that my problem only started when I thought I'd do the lock and sensor a "good turn" and lubricate it thoroughly with WD40! 

    I have since sprayed it again with electrical contact cleaner and thoroughly cleaned the bullet switch but the light is still on. 

  • Quote

    The wd40 may have caused more harm than good to the microswitch

    Sent from my GT-I9195 using Tapatalk

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    • 2 months later...

    After a while the switch has righted itself and the bonnet warning light is now out again.

    I will NOT be lubricating it with WD40 EVER again!

  • Quote
    • 2 weeks later...

    good choice. go get yourself some electrical contact cleaner for any and all electrical connections...

  • Quote

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