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Thread: D1 Central locking

  1. #1
    johnkebab Guest

    D1 Central locking

    '98 Disco 300Tdi
    So the central locking decided to die the other day, locks all work fine individually, just not centrally.
    1. Checked all fuses, all OK
    2. Checked for voltage at RHF actuator connector, 12.8v present.
    3. Bought new genuine actuator and replaced RHF actuator.
    4. No joy, nothing working.

    Disco doesn't have remote, alarm, or immobiliser, so ECU not present (underneath glove box to the left).

    Have a copy of RAVE and it states that central locking in this model of car is controlled by RHF actuator, so if it's new can't see why it wouldn't work...

    Anyone experienced this before? seems to be nothing wrong with the actuator as I hear clicking when I operate the lock, seems the unlock signal is getting lost somewhere......

    Thanks

    JK

  2. #2
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    I'd put my money on a break in the wiring loom. Probably where it leaves the door. The pink or orange wire (from the info I have, Not Rave).

    HTH
    Andrew

  3. #3
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    Actually. Ignore the above. It is wrong.

  4. #4
    johnkebab Guest
    I had a look at the wiring by the fuse box but just shook my head and thought I'd save it for another day

    Today might be that day!

  5. #5
    Presto's Avatar
    Presto is offline ChatterBox Silver Subscriber
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    I went through something similar with my 1995 D1. I bought this kit - Remote Central Locking which was much cheaper than replacement genuine actuators, plus it gave me remote central locking and a crude imobiliser! I had to replce 3 of the actuators, so have one spare

    Hope this helps!
    1994 D110 Tdi - 1957 88" Series 1 - New Project (due to commence 2056)

  6. #6
    johnkebab Guest

    Thumbs up Central locking solved.

    So in the end I replaced the FRH door actuator with an original LR part, after nothing worked and reading RAVE I went to supercrap and got a 30 dollar complete central locking kit, replaced FLH door actuator and it kicked into life straight away, none of the others did, so I went round and replaced all the actuators with supercraps and now I have central locking again. Don't know what caused all actuators to fail at the same time, but not a good look. Still, next time they go I'll know not to go spend a fortune on genuine parts when something 1/8th of the price will square away 4x as many doors!

    Thanks for all the help and suggestions, hope this thread helps someone square their faff away in the near future!

  7. #7
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    For those who understand

    Hi All

    I have fitted a complete cheap locking kit, which has two controlling actuators, into our S1 Disco, with a difference to suit ourselves.

    By studying the circuit, I have now made a couple of modifications.

    The LHF actuator controls all the other doors as well, whilst the RHF does lock all the other doors with the key, the key only unlocks that RHF door and all the others remain locked, but you can still lock the whole car from that RHF door.

    The reason is that, when SWMBO is shopping, she can now use the key from the footpath, in the LHF door to unlock all doors including the rear door, so she can put her parcels in the back and not have to step out into the traffic, with a armful of parcels, to unlock the whole car from the RHF door as per the original setup.

    Also, when SWMBO has finished work late at night, she can now open just the RHF door without the other doors unlocking, which makes her feel a lot more secure, when getting into the Discovery to go home in the dark, she can still lock the whole car from that RHF door.

    A central locking control button, is the next thing I am going to build into this system, so then we'll then be able to unlock or lock the whole car from the drivers seat.

    With a couple of Discovery's that I have worked on and were still using these original actuators, they had lost all the functions to all doors.
    This fault is caused by when the timing circuit that is contained inside the RHF unit breaks down.
    This fault then keeps the current on for an indefinite time, leading to all the other slave actuator motors, burning out.

    Cheers Arthur
    Last edited by wrinklearthur; 11th October 2011 at 10:08 PM. Reason: aussie engleesh

  8. #8
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    Did you replace the tail gate actuator as well?

  9. #9
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    keeping the boogy man out

    Quote Originally Posted by Traco View Post
    Did you replace the tail gate actuator as well?
    Hi Traco

    Yes, but replaced it using a original type for the tail gate.
    But then, that was only for the job when that timing circuit faulted.

    A lot a problems can be prevented, by doing a clean and a relubrication of the moving parts of the door latch and locking mechanisims, to catch those problems early however, you must keep a eye out for any sluggish or odd actions of the locking mechanism, (like the dancing door lock buttons ).

    For the moment, its easier for me to source second hand actuators, rather than making up fresh mounts and linkages, so I am tending to renovate the old stuff .

    Cheers Arthur

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