XK8 / XKR ( X100 ) 1996 - 2006
Sponsored by:
Sponsored by:

Weak key fob

Thread Tools
 
Search this Thread
 
  #1  
Old 05-03-2013, 07:40 PM
noterman's Avatar
Senior Member
Thread Starter
Join Date: Jan 2013
Location: Minnesota
Posts: 283
Received 16 Likes on 13 Posts
Default Weak key fob

My key fob on my 97 xk8 is weak. You have to be close to the car for it to work. Sometimes you have to press hard and a couple of times before it will work. I replaced the batterys with new Panasonic batterys with no improvement. It seems to work better if pointed at the car with the key side of the fob. All four functions work. Anyone else have this problem? Thanks
 
  #2  
Old 05-03-2013, 08:05 PM
WhiteXKR's Avatar
Veteran Member
Join Date: Apr 2010
Location: Arlington VA USA
Posts: 7,652
Received 2,981 Likes on 2,123 Posts
Default

Clean the rubber and gold button contact areas inside with rubbing alcohol. Make sure all the black residue is removed from the gold contacts. This usually brings it right back, good as new.
 
  #3  
Old 05-03-2013, 08:06 PM
giandanielxk8's Avatar
Veteran Member
Join Date: Oct 2012
Location: Puerto Rico
Posts: 3,402
Received 1,348 Likes on 725 Posts
Default

Yeah, I do. Mine sometimes just doesn't want to work. I can then go a week or two without trying to use it, then one day, I decide to do so and it works like magic... for about two or three days. Then it goes back to working the way you described it.

Sometimes cleaning the circuits with a cotton swab and diluted isopropanol helps.
 
  #4  
Old 05-03-2013, 08:36 PM
noterman's Avatar
Senior Member
Thread Starter
Join Date: Jan 2013
Location: Minnesota
Posts: 283
Received 16 Likes on 13 Posts
Default

Thanks, cleaned the four contacts with alcohol and now it works great. I had lots of black residue on the contacts. Thanks again, my wife thinks I am a genius.
 
  #5  
Old 05-03-2013, 08:52 PM
giandanielxk8's Avatar
Veteran Member
Join Date: Oct 2012
Location: Puerto Rico
Posts: 3,402
Received 1,348 Likes on 725 Posts
Default

Steve, I've noticed that even with a new battery, my key fob doesn't benefit much from cleaning the black tar with the isopropyl alcohol. It used to work, but now that the tar doesn't form as often, I end up scratching my head, wondering why it's not working.

It's not the tar, it's not the battery and it's not the programming. So why does it get to choose when to work?
 
  #6  
Old 05-03-2013, 09:08 PM
WhiteXKR's Avatar
Veteran Member
Join Date: Apr 2010
Location: Arlington VA USA
Posts: 7,652
Received 2,981 Likes on 2,123 Posts
Default

Originally Posted by giandanielxk8
Steve, I've noticed that even with a new battery, my key fob doesn't benefit much from cleaning the black tar with the isopropyl alcohol. It used to work, but now that the tar doesn't form as often, I end up scratching my head, wondering why it's not working.

It's not the tar, it's not the battery and it's not the programming. So why does it get to choose when to work?
Make sure you also clean the rubber side. Try very gently cleaning the battery contacts with a clean pencil eraser also.

Also look at the gold foil laminated to the circuit board in a circular pattern for each button with a magnifier. Check for broken areas or a small piece of foil which has delaminated. If there is a little piece delaminated, it can be removed with a razor blade as long as it does not interrupt the spiral continuity.
 

Last edited by WhiteXKR; 05-03-2013 at 09:19 PM.
  #7  
Old 05-04-2013, 12:50 AM
giandanielxk8's Avatar
Veteran Member
Join Date: Oct 2012
Location: Puerto Rico
Posts: 3,402
Received 1,348 Likes on 725 Posts
Default

Well, I did some thorough cleaning of the remote, as per your instructions. It's opening fine right now. Let's see if it stays that way.
 
  #8  
Old 05-04-2013, 11:08 AM
Sambo21's Avatar
Member
Join Date: Sep 2012
Location: Ponte Vedra Beach, Florida
Posts: 94
Received 19 Likes on 11 Posts
Default

Where is the receiver located on the car? Mine seems to work best when aimed at the rear.

98 XK-8 conv.
 
  #9  
Old 05-06-2013, 08:07 AM
WhiteXKR's Avatar
Veteran Member
Join Date: Apr 2010
Location: Arlington VA USA
Posts: 7,652
Received 2,981 Likes on 2,123 Posts
Default

The receiver itself is under the fuesbox in the trunk (boot). The antenna for the reciever is on the right (US passenger side), adjacent to the rear seat, just above the righthand speaker.
 
The following users liked this post:
Sambo21 (05-06-2013)
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
philwarner
XJ XJ6 / XJ8 / XJR ( X350 & X358 )
28
07-11-2017 10:21 AM
redxk8
XK8 / XKR ( X100 )
1
09-30-2015 08:18 AM
Listers
X-Type ( X400 )
1
09-30-2015 07:45 AM
Jzar
XJ XJ8 / XJR ( X308 )
11
09-27-2015 02:55 PM

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


Quick Reply: Weak key fob



All times are GMT -5. The time now is 09:59 AM.