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Thread: no cruise controll

  1. 7th May 2007, 08:05 PM #1
    willvine Guest

    no cruise controll

    G,day I have just noticed that my cruise controll doesn't work in my 99 disco2 worked last aprox 12 months ago, as not something you get to use in sydney much these days. I have checked the fuses and the diaphram seems to be ok. Any body had a similar problem? and how can I test to see what is wrong. thanks.
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  2. 7th May 2007, 08:10 PM #2
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    dmdigital
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    Check you haven't blown a brake light. Any fault in the brake circuit will disable cruise control.
    MY15 Discovery 4 SE SDV6

    Past: 97 D1 Tdi, 03 D2a Td5, 08 Kimberley Kamper, 08 Defender 110 TDCi, 99 Defender 110 300Tdi[/SIZE]
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  3. 7th May 2007, 08:21 PM #3
    willvine Guest
    thanks DM td5, will check tomorrow, will let you know if it fixed it.

    cheers.
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  4. 7th May 2007, 08:27 PM #4
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    sniegy
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    Also check the rubber hoses from the vac pump, they can split causing loss of vacuum. Remove hose & snip off end.
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  5. 7th May 2007, 11:08 PM #5
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    spudboy
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    Quote Originally Posted by dm_td5 View Post
    Check you haven't blown a brake light. Any fault in the brake circuit will disable cruise control.
    Well, isn't that a handy design feature....
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  6. 8th May 2007, 09:37 AM #6
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    ladas
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    I may also be the rotary coupler, between the steering wheel and the column.

    If you have a break in the wire here, which I understand is quite common, then the buttons on your steering wheel will not work.

    On my D1, I had the SRS airbag light come on, and this was the cause.

    The rotary coupler is a spiral cassette, containing a flat ribbon cable, with all the wires that go to the controls on the wheel and the air bag.

    New not cheap, ebay, when they come up quite reasonable, easy DIY fix.
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  7. 11th May 2007, 10:10 PM #7
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    wrex
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    Quote Originally Posted by ladas View Post
    New not cheap, ebay, when they come up quite reasonable, easy DIY fix.
    Ladas....Is there a way of testing this? I have an intermitent cruise control problem (more not working than working) and the SRS light is permanently on on my D1.
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  8. 12th May 2007, 08:41 AM #8
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    ladas
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    Quote Originally Posted by wrex View Post
    Ladas....Is there a way of testing this? I have an intermitent cruise control problem (more not working than working) and the SRS light is permanently on on my D1.
    Yes there is, but you really need to remove the rotary coupler to test it.

    It's easy enough to remove.

    Then you just check the resistance through each termonal - whilst slightly rotating the coupler, you may need an extra pair of hands for this.

    If the fault is there - they are just about impossible to home fix, so it's either a new one or take a chance with a 2nd hand one.
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  9. 12th May 2007, 09:10 AM #9
    Gavin Guest

    Cruise control

    Same problem as i have
    Traced it back to brake light switch.When you stop the car get out and check if lights are on mine does this from time to time,or youre driving hit a bumpand it turns off the cruise
    Try holding brake peddle up with youre foot when driving,Ifind i can start my cruise this way
    This problem has been to the stealer a few times I put it down to adjustment of the brake peddle
    Cheers Gavin
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  10. 12th May 2007, 09:27 AM #10
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    Quote Originally Posted by Gavin View Post
    Same problem as i have
    Traced it back to brake light switch.When you stop the car get out and check if lights are on mine does this from time to time,or youre driving hit a bumpand it turns off the cruise
    Try holding brake peddle up with youre foot when driving,Ifind i can start my cruise this way
    This problem has been to the stealer a few times I put it down to adjustment of the brake peddle
    Cheers Gavin
    Mine does exactly the same thing. Has anyone any idea how to adjust the switch? Is the switch at the pedal or in the engine bay?
    + 2016 D4 TDV6
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