General Tech Help Good at troubleshooting? Have a non specific issue? Discuss general tech topics here.

Xk8 key fob range

  #1  
Old 12-11-2017, 05:46 AM
1mmelman's Avatar
Junior Member
Thread Starter
Join Date: Dec 2017
Location: Worcester UK
Posts: 14
Likes: 0
Received 2 Likes on 1 Post
Default Xk8 key fob range

Hi, fobs (x2) will only lock/arm car when held over rear window, say 12" max distance(yup, inches).
​​​​​​Read forum, new battery fitted (3vdc), cleaned fob batt contacts. No change.
Would a fob reset work? All functions currently work though.
Where is car rx/tx? Located Sec cont mod in boot, held fob here but no improvement. Headlining has been off previously, is it under there? Suspect car issue as both fobs have limited range.

Checked my vin its the 04 model.
 
  #2  
Old 12-11-2017, 06:10 AM
GGG's Avatar
GGG
GGG is online now
Join Date: Dec 2011
Location: Durham, UK
Posts: 120,395
Received 16,761 Likes on 12,150 Posts
Default

As the fobs are already paired with the vehicle, a reset would make no difference.

The security system antenna is at the top of the rear screen on the coupe. Make sure the button connector to it is secure and the harness that comes down from behind the headliner is undamaged.

Graham
 
  #3  
Old 12-11-2017, 10:12 AM
1mmelman's Avatar
Junior Member
Thread Starter
Join Date: Dec 2017
Location: Worcester UK
Posts: 14
Likes: 0
Received 2 Likes on 1 Post
Default

Thanks, will crawl in and have nose at the connector when the wx warms up.
 
  #4  
Old 12-11-2017, 06:49 PM
Join Date: Dec 2009
Location: Wise County,TX
Posts: 11,877
Received 7,862 Likes on 4,752 Posts
Default

I had a similar fault with my 1999 X308. I would need to be within a few feet of the rear screen antenna to get the fob to activate the locks.
I checked the rear screen coax and wiring (OK).
I looked at the SLCM and saw that the COAX plug 'seemed' connected but upon farther investigation it turned out it was loose (almost disconnected) only held on by less than a thread.

I fully inserted the connector and screwed it tight!!! Range back to normal!!!!

bob
 
  #5  
Old 12-12-2017, 08:05 AM
1mmelman's Avatar
Junior Member
Thread Starter
Join Date: Dec 2017
Location: Worcester UK
Posts: 14
Likes: 0
Received 2 Likes on 1 Post
Default

Aha. Appears the soldered tab on the long aerial is not connected to the screen. This leaves one tab intact but connected to the short aerial, maybe explains range issue. All of the above on the rear screen top common to the wiring connector.
Found this...
https://eurobond-adhesives.co.uk/ele...ive-adhesives/
...but wonder if there are any screen changing guru's out there with a better solution?
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
simon3166
XK8 / XKR ( X100 )
60
12-03-2023 12:18 PM
DerekShiekhi
Non-Jaguar Vehicles
0
01-20-2017 12:06 PM
MR. CJ
XK8 / XKR ( X100 )
50
12-28-2014 06:13 PM
Martini
X-Type ( X400 )
11
11-08-2010 11:07 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Thread Tools
Search this Thread
Quick Reply: Xk8 key fob range



All times are GMT -5. The time now is 07:12 PM.