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Boot only opening with key

Discussion in 'A4/A4 cabriolet/S4 forum(B6 chassis)' started by AudidriverA4, Oct 5, 2012.

  1. AudidriverA4
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    AudidriverA4 Member

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    [Oct 5, 2012]
    Hi again

    Ever since I bought my A4 the boot has only ever opened with the key,

    Every time I press the boot open button on the key nothing happens no sound of solenoid or anything,

    Even when the car is unlocked, I still have to open the boot with the key, which is very annoying

    Any one have an idea what could be causing this problem ??

    Thanks
    #1
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  3. Andi25th
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    Andi25th Member

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    [Oct 5, 2012]
    The boot lock needs to be in a certain position for it to unlock or open via the Fob.
    #2
  4. kite
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    kite Member VCDS Map User

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    [Oct 5, 2012]
    Depending on the position of the key slot the boot lock can be isolated from the central locking.
    Put the slot in the vertical and try, then out it horizontal and try again.
    You could also have a broken lock actuator
    #3
  5. bez101
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    bez101 Yorkshire & Humber Rep. Regional Rep VCDS Map User

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    [Oct 5, 2012]
    and you need to press the remote button for a few seconds.
    #4
  6. AudidriverA4
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    AudidriverA4 Member

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    [Oct 5, 2012]
    I tried all methods and it's still no good there :sorry:

    Where is the lock actuator located are they easy to replace?
    #5
  7. bez101
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    bez101 Yorkshire & Humber Rep. Regional Rep VCDS Map User

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    [Oct 5, 2012]
    take the trim off and its up there with the lock
    quite easy to change
    #6
  8. AudidriverA4
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    AudidriverA4 Member

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    [Oct 5, 2012]
    Cheers I'll give it a go anyway,

    Is it better going to Audi themselves for a genuine part or would an ebay one be as good of quality?
    #7
  9. bez101
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    bez101 Yorkshire & Humber Rep. Regional Rep VCDS Map User

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    [Oct 5, 2012]
    id go second hand from a scrappy or ebay
    i can see audi charging loads
    or it could just be a wire off
    or check the wires from boot to car they can and do snap worth a check.
    #8
  10. boomtown
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    boomtown Member

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    [Oct 5, 2012]
    part is £18 from main dealer, ill find part no in a bit
    #9
  11. boomtown
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    boomtown Member

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    [Oct 5, 2012]
    8E5 962 115
    #10
  12. stu_m
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    stu_m Active Member VCDS Map User

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    [Oct 5, 2012]
    I would check the wiring to the boot before you spend money it costs nothing to check and they do break mine did it about a year or two ago
    #11
    iantype-r likes this.
  13. AudidriverA4
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    AudidriverA4 Member

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    [Oct 5, 2012]
    Is that the wiring behind the trim on the Boot lid? (Mine is a saloon model by the way)
    #12
  14. stu_m
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    stu_m Active Member VCDS Map User

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    [Oct 5, 2012]
    it usually breaks where it runs up the left hand side hinge on the boot lid
    #13
  15. AudidriverA4
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    AudidriverA4 Member

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    [Oct 5, 2012]
    Cheers again Stu

    I must owe you a few points at this stage :beerchug:


    If the wires are okay I think I'll try the lock actuator then
    #14
  16. stu_m
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    stu_m Active Member VCDS Map User

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    [Oct 5, 2012]
    No worries

    it is a bit of a pain to get to the wires thought i had to pull the grommets out and the wire through to give some slack

    if you have a multimeter you could always check your getting power to the actuator when you press the key fob
    #15
  17. AudidriverA4
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    AudidriverA4 Member

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    [Oct 5, 2012]
    The multimeter is out of action at the moment, need to order new leads for it,

    I have a circuit tester though, It should do the job shouldn't it,

    Once the button is pressed if I have the circuit tester hooked up to it, once I press the button the tester should light up if it's getting power right?
    #16
  18. stu_m
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    stu_m Active Member VCDS Map User

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    [Oct 5, 2012]
    A circuit tester might work but it will just be a quick flash of power

    you can only try
    #17
  19. StuG808
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    StuG808 1.9tdi130 Avant FailWheelDrive

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    [Oct 6, 2012]
    I posted this in a big thread about this issue. I had exactly the same issue and fixed it. I posted this

    #18
  20. AudidriverA4
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    AudidriverA4 Member

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    [Oct 6, 2012]
    Thanks StuG that sounds brilliant

    Do you have a link by any chance to your tread??
    #19
  21. StuG808
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    StuG808 1.9tdi130 Avant FailWheelDrive

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  22. AudidriverA4
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    AudidriverA4 Member

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    [Oct 7, 2012]
    Took off my actuator today

    [​IMG]

    Took me a few seconds to locate it :laugh:

    [​IMG]

    I then used the circuit tester to test the plug going into the actuator when I had it removed, Lucky enough the actuator is getting power, so it has to be the actuator itself that is at fault,

    Here is the old one it looks very dirty

    [​IMG]

    All I need to do now is order a new actuator :cool:
    #21
  23. Jules
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    Jules Member

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    [Oct 7, 2012]
    Keep us updated got the same problem with mine just not been in an ordered a new one yet
    #22
  24. AudidriverA4
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    AudidriverA4 Member

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    [Oct 8, 2012]
    Will do, just rang the main dealers and I'll have to collect the part myself, just don't know when I'll get time off work now to collect it :(
    #23
  25. AudidriverA4
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    AudidriverA4 Member

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    [Oct 12, 2012]
    Just after fitting a new boot actuator this evening.

    Made absolutely no difference at all :aggressive:


    Any other ideas anyone

    there is still no noise to be heard at all from the new part and it is getting power :uhm:
    #24
  26. troopa
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    troopa Member

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    [Oct 12, 2012]
    I know that if you lock the doors from inside the car with the key button by the drivers handle and then 're open with that button. This doesn't open the boot and you get no response at all from the boot soft button. Maybe you have some fault with that door lock??
    #25
  27. AudidriverA4
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    AudidriverA4 Member

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    [Oct 14, 2012]
    Just noticed for the week the actuator was removed from my car, the bulb gone light came up on the dash, both of my number plate bulbs went,

    But when I fitted the new actuator, the light on the dash went out and the number plate lights are working again but sadly the boot is still only opening with the key.....
    #26
  28. BlackQuat
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    BlackQuat Well-Known Member VCDS Map User

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    [Oct 14, 2012]
    Check how your key lock is turned. You can disable opening by button by putting the key in at a certain angle.
    #27
  29. AudidriverA4
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    AudidriverA4 Member

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    [Oct 14, 2012]
    Tried it everway

    Think I must have a wiring problem
    #28
  30. stu_m
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    stu_m Active Member VCDS Map User

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    [Oct 14, 2012]
    Did you not check the wiring like I mentioned?
    #29
  31. bez101
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    bez101 Yorkshire & Humber Rep. Regional Rep VCDS Map User

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    [Oct 14, 2012]
    its got to be wireing
    as post 8
    1st thing to check on an audi
    they break in the doors boot everywhere.
    #30
  32. AudidriverA4
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    AudidriverA4 Member

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    [Oct 14, 2012]
    Hi Stu

    No I never did, when I tested the plug that goes into the actutator and there was power going into it, I was sure it was the actutor its self that was at fault so I never did,

    It looks like it could possible a fault with the earth wire now I'm thinking if thinking if the 'live' wire is bringing power to it
    #31
  33. AudidriverA4
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    AudidriverA4 Member

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    [Oct 14, 2012]
    Cheers bez101

    I'll take a look at it tomorrow

    Nearly getting sick now of taking the trim on and off on the boot now :laugh:
    #32
  34. bez101
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    bez101 Yorkshire & Humber Rep. Regional Rep VCDS Map User

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    [Oct 14, 2012]
    on the saloon left hand side as your looking at it
    the hinge take the plastic cover off just clips on
    undo the tape on the wires its normaly the thick brown but could be the thin ones
    have a very good look as they sometimes dont look damaged
    did it on my B7 took my fogs and 1 numberplate light out and lock.
    #33
  35. AudidriverA4
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    AudidriverA4 Member

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    [Oct 14, 2012]
    If I remember it looks like there isn't to much space to work with there :laugh:


    So it's wire will more than likely be broken ?

    twist the ends together, insulating tape and job done hopefully
    #34
  36. bez101
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    bez101 Yorkshire & Humber Rep. Regional Rep VCDS Map User

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    [Oct 14, 2012]
    very tight add some wire
    sometimes there broke on the inside if the plastic and they look ok
    give them a good pull.
    #35
  37. AudidriverA4
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    AudidriverA4 Member

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    [Oct 14, 2012]
    Thanks again bez

    I'll give it a try tomorrow

    Looks like it's going to be a tricky enough job
    #36
  38. AudidriverA4
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    [Oct 20, 2012]
    Had a look at the wiring today:

    [​IMG]

    The only wire that looked to be damaged was a slightly thicker brown wire, compared to the other wires:
    [​IMG]

    It doesn't look to me that the wire was that badly damaged to cause the actuator to fail :confused:

    But do you guys think?

    Think I might have to give up on the idea of my boot ever opening with the button on the key :blush:
    #37
  39. stu_m
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    stu_m Active Member VCDS Map User

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    [Oct 20, 2012]
    you have to open the full loom up as mine was further down and a right pain to see!
    #38
  40. stu_m
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    stu_m Active Member VCDS Map User

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    [Oct 20, 2012]
    oh and mine was on the main body side too
    #39
  41. AudidriverA4
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    AudidriverA4 Member

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    [Oct 20, 2012]
    Cheers stu

    will try and take off all that plastic around the wires if I can
    #40

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