Help! Car is locked with fob, and now wont unlock using the fob?! Got immobiliser codes from citroen 3 days ago!?

1. _Rob Infrequent Poster Joined: May 2010 Posts: 170 Ep3 Civic Type R

   #1 28th November 2010, 00:56

   I locked my car yesterday with the fob, and now it wont unlock... Its real real cold and shed loads of snow, but i doubt this has anything to do with it?!
   
   3 days ago the car was in the garage because it wouldn't start, and they said it was the immobiliser, so they got new codes from citroen or something (not sure exactly how it works), and I asked them to check the battery and alternator as the battery light kept flickering on long journeys down the motorway...
   
   They said the battery and alternator were fine, and the car started fine when they had fixed the immobiliser, but the battery light still flickered on the motorway when bringing it back up to Newcastle...
   
   Now i've locked my car and it wont bloody unlock again- what the hell is going on?! Anybody that could help shed some light on this would be a legend. Ive had all sorts of mechanical problems with Saxos in the past but never electrical so i'm not too good at this side of things!
   
   p.s. I thought it may be because the car battery was dead, but on the short journeys (4 miles or so at a time) that I have done over the last few days the battery light wasn't flickering which usually indicates the alternator is charging it so I wouldn't expect it to drain that quickly?!
2. MunkyBoy Established Member Joined: Nov 2009 Maldon Posts: 2033 1. MK2 Chalked VT'd 1.1 2. MK1 VTS

   #2 28th November 2010, 01:33

   Have you tried the key? :s
3. _Rob Infrequent Poster Joined: May 2010 Posts: 170 Ep3 Civic Type R

   #3 28th November 2010, 01:41

   Yeah I havent done that yet just because when my brother did that it seemed to lead to having to reset the immobiliser with codes from citroen so i didnt dare!
   
   Ill have to i suppose but the whole thing is alarmed so its going to end in tears...
4. user_48655 Infrequent Poster Joined: Nov 2010 hereford Posts: 173 citroen saxo vtr.

   #4 28th November 2010, 02:21

   if you use the fob does it unlock and lock again strait away?
5. user_31412 Established Member Joined: Feb 2009 ★ West / North Yorkshire ★ Posts: 1653

   #5 28th November 2010, 02:23

   Not sure what the garage has changed, but to reprogram a remote to a standard immobiliser, you would need to unlock your car with the key, then within 30 seconds press the central locking button twice.
6. user_48655 Infrequent Poster Joined: Nov 2010 hereford Posts: 173 citroen saxo vtr.

   #6 28th November 2010, 02:38

   this happened to me but it sorted its self out weirdly
7. _Rob Infrequent Poster Joined: May 2010 Posts: 170 Ep3 Civic Type R

   #7 28th November 2010, 13:27

   When I try to unlock it with the fob it doesn't even try to unlock, the lights don't flash and the locks don't turn... I don't know what buggered the immobiliser last time and don't know enough about how they work really. The last thing I want to do is go and start it with the key only for the system to be shut down by the immobiliser again.
   If I take it to a garage I don't want them to say the battery and alternator are fine, redo the immobiliser again and end up going round in circles.
   Bloody Saxos!
   Thanks for the replys
8. Paddy27 L-plater Joined: Oct 2010 Northwich Posts: 38 Vts Freelander

   #8 28th November 2010, 13:46

   Might sound daft, but is the battery in your key fob flat?
9. Manu Saxperience Addict Joined: Dec 2009 Posts: 11714 A6 Le Mans tuned/A3 TFSI tuned

   #9 28th November 2010, 14:24

   check the fobs' battery. If the battery is fine, reset the fob.
10. _Rob Infrequent Poster Joined: May 2010 Posts: 170 Ep3 Civic Type R

    #10 28th November 2010, 14:24

    I thought about that but then my spare fob used to work and that doesn't work now either so it would be one in a million for them both to have run out!
11. _Rob Infrequent Poster Joined: May 2010 Posts: 170 Ep3 Civic Type R

    #11 28th November 2010, 14:25

    How do you reset the fob manu? unlock with the key and press the central locking button twice?
12. Manu Saxperience Addict Joined: Dec 2009 Posts: 11714 A6 Le Mans tuned/A3 TFSI tuned

    #12 28th November 2010, 14:31

    just went through the manual, I confirm you should push the open button twice.
13. _Rob Infrequent Poster Joined: May 2010 Posts: 170 Ep3 Civic Type R

    #13 28th November 2010, 14:34

    thank you very much
14. user_31412 Established Member Joined: Feb 2009 ★ West / North Yorkshire ★ Posts: 1653

    #14 28th November 2010, 19:26

    Quote:

    Originally Posted by outrage_uk Not sure what the garage has changed, but to reprogram a remote to a standard immobiliser, you would need to unlock your car with the key, then within 30 seconds press the central locking button twice.

    Not sure what the garage has changed, but to reprogram a remote to a standard immobiliser, you would need to unlock your car with the key, then within 30 seconds press the central locking button twice.
15. _Rob Infrequent Poster Joined: May 2010 Posts: 170 Ep3 Civic Type R

    #15 29th November 2010, 12:10

    Right so I decided to try the reset fob thing, but no joy, and when I unlocked it with the key I figured the central locking was broken as my passenger door remained shut sooo...
    1. Is the central locking battery powered?... I assume it is...
    2. Can I therefore presume I have a battery/connection problem?
    
    Thanks for the help so far guys
16. user_48655 Infrequent Poster Joined: Nov 2010 hereford Posts: 173 citroen saxo vtr.

    #16 29th November 2010, 12:25

    you need to be able to unlock the car to be able to reset the for.
    does you key not open any of the doors or boot?
17. _Rob Infrequent Poster Joined: May 2010 Posts: 170 Ep3 Civic Type R

    #17 29th November 2010, 12:32

    Yeh sorry mate I was a bit vague there, the door that I put the key in unlocked, but it didn't unlock the rest of the doors like it usually does with the central locking system
18. Alexp Central South Joined: Jun 2006 East Sussex Posts: 3105 VTS :)

    #18 29th November 2010, 14:13

    Sounds like your battery is dead, Does it still start?
19. _Rob Infrequent Poster Joined: May 2010 Posts: 170 Ep3 Civic Type R

    #19 29th November 2010, 14:42

    Haven't tried it yet I'm crapping it about the immobiliser shutting the car down again as I only got it sorted last week, I'll have to give it a go I suppose. Shit.
20. MunkyBoy Established Member Joined: Nov 2009 Maldon Posts: 2033 1. MK2 Chalked VT'd 1.1 2. MK1 VTS

    #20 29th November 2010, 15:24

    Literally sounds like your battery is dead if the central locking doesn't work with the key? Thats what mine did when my battery was flat anyway... I kacked it about the fob aswell!
21. user_48655 Infrequent Poster Joined: Nov 2010 hereford Posts: 173 citroen saxo vtr.

    #21 29th November 2010, 17:37

    will probably be your battery if its only doing one door
22. user_31412 Established Member Joined: Feb 2009 ★ West / North Yorkshire ★ Posts: 1653

    #22 29th November 2010, 18:35

    Quote:

    Originally Posted by _Rob Haven't tried it yet I'm crapping it about the immobiliser shutting the car down again as I only got it sorted last week, I'll have to give it a go I suppose. Shit.

    Your immobiliser wont 'shut down' the car by opening it with the key. There is a transponder in the key, a receiver in the dashboard which is coded to the ECU - unless there is a big electrical fault (or your a thief) this is un breakable.