Central Locking Problems xk8
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Hi
Can anybody help me - Yesterday my 1997 XK8 coupe central locking stopped working - in addition a few other things occurred :
1. Remote switches off alarm/opens boot and operate headlights but does not open the car
2. Key works ok but just the driver door unlocks - not the passenger door
3. Doors do not lock on drive away anymore.
4. Windows godown the small amount to open the door but does not go back up when you close the door.
5. everytime you pull the door handle the window goes down a small amount - e.g if you pull the door handle 5 times the window goes down 5 times
Nick
Can anybody help me - Yesterday my 1997 XK8 coupe central locking stopped working - in addition a few other things occurred :
1. Remote switches off alarm/opens boot and operate headlights but does not open the car
2. Key works ok but just the driver door unlocks - not the passenger door
3. Doors do not lock on drive away anymore.
4. Windows godown the small amount to open the door but does not go back up when you close the door.
5. everytime you pull the door handle the window goes down a small amount - e.g if you pull the door handle 5 times the window goes down 5 times
Nick
On #5, check your owner's manual. It will tell you how to reset the windows. As j_g says, the computers go squirrely with a battery that is not up to par.
Guest
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Thanks for the info - fixed the window problem - without stating the obvious - how do you tell if your battery is not up to par - starts first time every time, no labouring on the starter - reads 13V (mid way) on the gauge when running - nothing else is going wrong. I drive 125 miles each day on fast A roads and at the moment without lights on - so its getting a good run everyday.
on the door locking:
When i press the key fob the alarm works (indicators flash) and there is a clicking sound coming from the door - also when you open the door from the inside there is the same clicks (every 3 or 4 secs) -
Nick
on the door locking:
When i press the key fob the alarm works (indicators flash) and there is a clicking sound coming from the door - also when you open the door from the inside there is the same clicks (every 3 or 4 secs) -
Nick
I would just try a reboot and see what happens. Disconnect the battery for a minute or so and reconnect it. Let it sit for a few minutes. Of course you will have to reprogram the windows again.
Mostauto part stores will do a battery test for free, hoping to sell you a battery. The voltage guage is an 'idiot guage', it always reads in the middle unless the system has completely failed.
I had the same problem. Appx $125 installed by the great guys at my localAdvanced Auto Parts. They even took the time to hook up a secondary battery so myvehicle programming stayed (radio,#1, #2 settings,etc)as they made the change.
Poof - problems gone!
Poof - problems gone!
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Guest
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Hi
Sorry for delay – been trying a few days but there is something wrong with my computer.
The car only locks and unlocks the driver door with the key. If you press the remote – interior lights come on and you can hear clicking but nothing happens. When you get in the car and lock the door from the inside your hear a click every few seconds (think there are 3 or 4 clicks) also you can hear clicks on the passenger side. Passenger side will only open by hand. Boot & fuel opens ok, remote boot and lights ok. No drive off locking either
Nick
Sorry for delay – been trying a few days but there is something wrong with my computer.
The car only locks and unlocks the driver door with the key. If you press the remote – interior lights come on and you can hear clicking but nothing happens. When you get in the car and lock the door from the inside your hear a click every few seconds (think there are 3 or 4 clicks) also you can hear clicks on the passenger side. Passenger side will only open by hand. Boot & fuel opens ok, remote boot and lights ok. No drive off locking either
Nick
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Hi I've had the battery checked out and have been told it's fine think it showed 12.9 Volts - can't think what else it could be in terms of resetting (disconected battery to try that)- must be something electrical in the door as it clicks but does nothing else - anyone any last thoughts before I take it in to a dealer
Nick
Nick
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Hi I have similar problems. Cannot use remote at all. I got new battery for it. I can manually lock the drivers door but not the passengers door. Accordingly someone helped themselves to a gear shift knob in Roslyn the other night. I have loaned my manual and the local jag expert is on holiday. I have the same problemn with the door lowering when touching the handle as above. The battery is charged according to the battery man. I have to prime it before closing it. I can reset the windows by the hand switches ok. Also the battery goes flat if I leave it connected overnight but I cannot figure what the drain off is? So have manually set up everytime I drive it. Any ideas?
I've been having this exact same problem on my 2000 xkr! Went to the dealer, they said it was a door microswitch problem, which was going to cost about €400,- per door! Although you can biy the parts yourself and possibly fix the problem. Here's a link to a video of how it should be done:
http://youtu.be/DV1hy3AYni0
Alhough i haven't tried this yet due to a lack of time.
Furthermore i found a possible second option, it is said you can clean this microswitch yourself, here's a link to that post:
https://www.jaguarforums.com/forum/xk8-xkr-17/success-passenger-door-microswitch-90184/?styleid=5
Have been suffering from this problem quite a while now, especially when the alarm goes of at 3am is startink to wear me out
Anyway, hope this helps, please let me know if it does!
Greetings
http://youtu.be/DV1hy3AYni0
Alhough i haven't tried this yet due to a lack of time.
Furthermore i found a possible second option, it is said you can clean this microswitch yourself, here's a link to that post:
https://www.jaguarforums.com/forum/xk8-xkr-17/success-passenger-door-microswitch-90184/?styleid=5
Have been suffering from this problem quite a while now, especially when the alarm goes of at 3am is startink to wear me out

Anyway, hope this helps, please let me know if it does!
Greetings
Sounds like the door micro switch to me, see post >#6 here for info and links:
https://www.jaguarforums.com/forum/x...roject-118210/
https://www.jaguarforums.com/forum/x...roject-118210/
Hi
Can anybody help me - Yesterday my 1997 XK8 coupe central locking stopped working - in addition a few other things occurred :
1. Remote switches off alarm/opens boot and operate headlights but does not open the car
2. Key works ok but just the driver door unlocks - not the passenger door
3. Doors do not lock on drive away anymore.
4. Windows godown the small amount to open the door but does not go back up when you close the door.
5. everytime you pull the door handle the window goes down a small amount - e.g if you pull the door handle 5 times the window goes down 5 times
Nick
Can anybody help me - Yesterday my 1997 XK8 coupe central locking stopped working - in addition a few other things occurred :
1. Remote switches off alarm/opens boot and operate headlights but does not open the car
2. Key works ok but just the driver door unlocks - not the passenger door
3. Doors do not lock on drive away anymore.
4. Windows godown the small amount to open the door but does not go back up when you close the door.
5. everytime you pull the door handle the window goes down a small amount - e.g if you pull the door handle 5 times the window goes down 5 times
Nick
The same thing happens on my XK8 every couple of weeks. The problem usually only affects the driver’s door (R/H side as I am in England).
i have replaced the module inside the driver’s door but this has had no effect. The only cure I have found is to disconnect the battery for a few minutes. The car then needs to be left to “sort itself out” for a while (ten minutes or so); then the window max lift and drop positions can be reset and the system will work as it should for another two weeks or so.
I am now contemplating changing the central locking module which is located in the boot (trunk) underneath the fuse box on the right hand side rear wards of the battery.
Mark, Worthing, Sussex, England
Check
1. Battery
2. Battery cables’ connections
3. Door cable connections
4. Microswitches
4. Door control module
5. Security module
bet it’s no.1 or 2
1. Battery
2. Battery cables’ connections
3. Door cable connections
4. Microswitches
4. Door control module
5. Security module
bet it’s no.1 or 2
Guess why I'm reading this!?
The same thing happens on my XK8 every couple of weeks. The problem usually only affects the driver’s door (R/H side as I am in England).
i have replaced the module inside the driver’s door but this has had no effect. The only cure I have found is to disconnect the battery for a few minutes. The car then needs to be left to “sort itself out” for a while (ten minutes or so); then the window max lift and drop positions can be reset and the system will work as it should for another two weeks or so.
I am now contemplating changing the central locking module which is located in the boot (trunk) underneath the fuse box on the right hand side rear wards of the battery.
Mark, Worthing, Sussex, England
Did you ever resolve your issue? My 2001 XK8 is behaving very oddly with the door locking. Did you replace the control module?
Thanks,
Tim
Worthing, Sussex
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