Trunk Latch issues
#1
06-14-2010 | 02:40 PM
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Trunk Latch issues
My trunk latch has started acting up on my otherwise trouble-free XJ-8. I'm curious if anyone else has seen something similar and might share what their ultimate fix turned out to be....
1. The trunk latch works fine, mechanically. It closes, latches, and stays latched. The key lock is fully functional.
2. The motor inside the latch mechanism runs for about three seconds whenever I open the trunk lid or latch it closed. The sound it makes seems to indicate that it's spinning without load
3. The dashboard message center indicates TRUNK OPEN, even though the trunk is securely closed with the mechanical lock.
4. Because of the TRUNK OPEN status, the remote-activated door lock and alarm will not operate. I can lock the car, but I have to use the key in the door as the only method.
My first quick-fix attempt was to unhook the battery cables and allow the entire electrical system to drain/reset. My thinking was that an out-of-synch sensor in the trunk latch might reset by doing this. Behavior was the same afterwards, however.
So at this point, it looks like someone (me?) needs to go inside the latch mechanism to diagnose.
Anybody else seen anything similar?
1. The trunk latch works fine, mechanically. It closes, latches, and stays latched. The key lock is fully functional.
2. The motor inside the latch mechanism runs for about three seconds whenever I open the trunk lid or latch it closed. The sound it makes seems to indicate that it's spinning without load
3. The dashboard message center indicates TRUNK OPEN, even though the trunk is securely closed with the mechanical lock.
4. Because of the TRUNK OPEN status, the remote-activated door lock and alarm will not operate. I can lock the car, but I have to use the key in the door as the only method.
My first quick-fix attempt was to unhook the battery cables and allow the entire electrical system to drain/reset. My thinking was that an out-of-synch sensor in the trunk latch might reset by doing this. Behavior was the same afterwards, however.
So at this point, it looks like someone (me?) needs to go inside the latch mechanism to diagnose.
Anybody else seen anything similar?
#2
06-15-2010 | 06:38 AM
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From: Crewe, England
It sounds like there is a sensor of some kind in the latch mechanism so it knows when the boot lid is latched. This may be broken or a wire connection is loose, or it needs re-setting to detect the bootlid position, (I suspect the latter). Have you lifted anything heavy into the trunk and let it rest on the mechanism momentarily.
#3
06-15-2010 | 12:55 PM
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Joined: Aug 2009
Posts: 32
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From: Virginia
Trunk latch
I have a 2007 XJ8 that has started having a similar problem. About 20% of the time when I try to open the trunk with any of the buttons(fob,dash,trunk) the trunk lid will raise like it is open but I cannot lift the lid. It seems as though something is caught. I can push the lid down and the motor will engage and shut the trunk and usually it will keep hanging once it starts. If it works then I can open and close the trunk 10 times with no problem. I am about to take it in for routine service soon but I would appreciate any advice.
#5
06-15-2010 | 06:02 PM
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From: Atlanta, GA USA
Looks like this may become one of those common issues with age/wear.
https://www.jaguarforums.com/forum/s...ad.php?t=38029
https://www.jaguarforums.com/forum/s...ad.php?t=38029
#6
06-28-2010 | 12:58 PM
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Joined: Aug 2009
Posts: 32
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From: Virginia
For the record I wanted to report that the dealer ended up replacing the motorized trunk latch on my 2007 XJ8. The issue with the trunk popping up but not being fully released got worse by the day until it was happening about half the time. All seems to be well now and the motor seems to have a stronger sound when it opens the latch. All repaired under warranty with 40k miles on the clock.
#7
07-08-2010 | 10:48 AM
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From: DC
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#8
07-09-2010 | 01:30 PM
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From: Queens, New York
#9
10-28-2014 | 07:49 AM
I have a 2009 XF and i keep getting the warning light that the trunk is still open. i relaced the latch and the remote and latch botton inside the vehilce still work properly, however the warning light is still comimg on. So before i head over to the Jag dealer to pay them my wife's arm and leg (who slammed the trunk closed causing this issue) anyone have a possible solution?
#11
10-28-2014 | 08:00 AM
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From: New Hampshire
#12
10-29-2014 | 06:57 PM
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Joined: Feb 2008
Posts: 164
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From: N. California
Had similar issues as the OP along with random car alarm going off. Seeing how basic the trunk latch system is, only having three main parts my bet was on the latch mechanism. Especially given the number of times my wife has slammed the boot lid forgetting it has a soft close feature (something she wasn't used to). Of course her new car, a 2012 Mercedes E350 has auto close with a simple push of a button and she still slams it shot 
So on Monday I replaced the latch with new unit from Gaudin Jaguar. The whole job took about 30 minutes and seems to have fixed the problem (time will tell). Now all I need to do is keep the wife away from it, LOL!!
So on Monday I replaced the latch with new unit from Gaudin Jaguar. The whole job took about 30 minutes and seems to have fixed the problem (time will tell). Now all I need to do is keep the wife away from it, LOL!!
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