ABS, Speed ctrl warning activated when braking - intermittent
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  1. #1
    Tadpole
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    Default ABS, Speed ctrl warning activated when braking - intermittent

    Hi All,

    I have read that these problems can be caused by brake sensors. Does anyone know if worn brake pads can cause this? drives me nuts as u can't use cruise ctrl after warnings come up. Doesn't happen every time I brake, but is usually activated every trip.

    I am about to change the rear passenger side pads as one of bolts in the caliper had siezed (no grease) and the inside pad has worn to about 2mm.

    Is there anything else to look for if changing pads does not fix this problem? or do i need to take to dealer (fearing big $$$$).

    Cheers
    Michael

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  2. #2
    1000+ Posts jo proffi's Avatar
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    Start with the easy stuff. Give the wheel sensors a clean.
    Jo

  3. #3
    Tadpole
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    Cheers Joe. Silly question, where are they located & what do they look like?

    Cheers

  4. #4
    Veni Vidi Posti 68 404's Avatar
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    Make and type of car?

    Dave
    2008 Renault Laguna 2.0 dCi break
    ​1997 BMW K1200RS

    IR655
    (George Bush Snr): "I'll never apologize for the United States of America. Ever, I don't care what the facts are."


  5. #5
    Tadpole
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    307 2006 hdi diesel manual

  6. #6
    1000+ Posts robmac's Avatar
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    Quote Originally Posted by jo proffi View Post
    Start with the easy stuff. Give the wheel sensors a clean.
    Jo
    Also are you running matched tyre diameters/ standard diameter tyres?

  7. #7
    Tadpole
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    yes all tyres the same

  8. #8
    UFO
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    There was a recall for the C5 X7 to replace a short brake harness cable (in the dash) that caused a similar problem to that you describe. Was there a similar issue for the 307?
    Craig K
    2009 C5 HDi Exclusive

  9. #9
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    Try replacing the brake switch.

  10. #10
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    Default 307 brake switch

    Yes, I would go for the brake switch first.
    I had three in six years in my 307 HDi Touring.
    Symptoms are "limp home mode" engine running and cruise control not working.
    It's a real bugger when the damn thing fails on the way to trade the car in, especially when it won't do more than about 40kmh going up hills.

  11. #11
    1000+ Posts jo proffi's Avatar
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    Quote Originally Posted by Michael M View Post
    Cheers Joe. Silly question, where are they located & what do they look like?

    Cheers
    sorry, missed your reply.

    the disk rotor has a sort of cog built into it which the wheel sensors read.
    Wheel sensor will probably be on the inside face of the disk rotor and close to this 'cog'.


    Jo

  12. #12
    Tadpole
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    Quote Originally Posted by jo proffi View Post
    sorry, missed your reply.

    the disk rotor has a sort of cog built into it which the wheel sensors read.
    Wheel sensor will probably be on the inside face of the disk rotor and close to this 'cog'.


    Jo
    Thanks Joe. Will clean them then go from there.

  13. #13
    Tadpole
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    Quote Originally Posted by Paul Watson View Post
    Yes, I would go for the brake switch first.
    I had three in six years in my 307 HDi Touring.
    Symptoms are "limp home mode" engine running and cruise control not working.
    It's a real bugger when the damn thing fails on the way to trade the car in, especially when it won't do more than about 40kmh going up hills.
    Hi guys, i was a member before the crash, usually just a lurker and rarely contributed but this question keeps cropping up so i felt compelled to re register.

    Had the same problem on my 307, they replaced the brake switch and it went away for a couple of months. When it came back they replaced the brake switch and wiring harness (under warranty), that was 4 years ago, no problems since.

    Another common question with the 307 is the chime (boing) noise when you start it, means the battery is on it's way out, replace the battery, mine did this for about 6 months until one day it wouldn't start at all.
    Replaced the battery and it was obvious that the cranking speed of the new battery was so much faster than the old one.

    My diesel return lines have been leaking, a very common fault according to the workshop, leaving a puddle of diesel in the rocker cover which when spilt onto the heater hoses causes the heater hoses to turn to jelly and explode. The return line kit wasn't as expensive as replacing the blown hoses.

    Apart from that the 307 is joy to drive, love the grunt, just wish i could use 6th.

    Pete

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