XK / XKR ( X150 ) 2006 - 2014

Something empties battery in two days

 
  #21  
Old 05-07-2019, 04:32 PM
Cee Jay's Avatar
Veteran Member
Join Date: Apr 2013
Location: Kaysville, Utah, US
Posts: 5,419
Received 1,146 Likes on 855 Posts
Default

The ONLY decent way to do Amp Checks is with an Amp-Clamp type meter. Using a regular VOM meter is diabolical in such an operation.
 
  #22  
Old 05-07-2019, 05:39 PM
Ranchero50's Avatar
Veteran Member
Join Date: Mar 2017
Location: Hagerstown MD
Posts: 2,764
Received 758 Likes on 566 Posts
Default

Macc, if you can charge the battery fully outside the car and let it sit unhooked for a couple days. keep checking the voltage daily and see if it keeps dropping from an internal short.
 
The following 3 users liked this post by Ranchero50:
Canadacat (05-07-2019), Macc (05-12-2019), Queen and Country (05-07-2019)
  #23  
Old 05-10-2019, 02:07 PM
Junior Member
Join Date: Dec 2017
Location: Barrie
Posts: 2
Likes: 0
Received 0 Likes on 0 Posts
Default

I have the same problem on my 2010 XKR owned from new. 2 months new and the battery was dead. The dealer replaced the battery and no problem for the next 7 years then intermittently I would come to the car and find a completely dead battery. Had the dealer check it out, they indicated a parasitic drain on the audio system and a rusty ground strap. The software of the audio unit was reloaded and the strap replaced. I also changed the battery as it was 7 years old and winter was approaching. A few weeks later same thing. This time the dealer replaced the alternator as it was not charging when hot. This issue continues with no suggested solutions. Last year it came out of the garage in April after being on a battery conditioner all winter and ran smoothly until September, then the problem started again.

It is a random event and so difficult to check I appreciate but I am surprised there is no diagnostic tool to identify this type of event. They exist in other fields, e.g. power supplies. it is as likely to occur after a long run as after a shorter one but the discharge must be rapid as it goes from full charged to dead overnight.

I understand there is a built in battery conditioning circuit that monitors the battery and periodically puts it through a discharge cycle. Is that the case and if so is it software driven.

Another possible cause suggested by the dealer is the heated front or rear screen switching on, which can be checked by hand!
Sorry for the length of this but any guidance appreciated and it lets Gordocat know he is not alone out there.
 
  #24  
Old 05-12-2019, 09:22 AM
Macc's Avatar
Senior Member
Thread Starter
Join Date: Apr 2017
Location: Finland
Posts: 102
Received 8 Likes on 7 Posts
Default

Well that was not very comforting...situation seems to be same here :/ Have to test the parasitic currents anyway, and perhaps try to get the battery out for some days as Ranchero50 suggested.
 
  #25  
Old 05-12-2019, 09:51 AM
1 of 19's Avatar
Senior Member
Join Date: Oct 2014
Location: Eau Claire, WI.
Posts: 963
Received 237 Likes on 175 Posts
Default

Originally Posted by Macc View Post
Thanks for all the really good ideas! I went to a specialised battery shop. They tested the battery and said it is in good condition...so it is something else.
I will try the amp meter route. I do a lot of DIY electronics (synths) so this is easy. I do not know how much is "too much" current though: there is bound to be some systems which take several mAs even if the car is in rest mode.
The curious thing is, that I haven't changed anything for a long time. Something must be broken I guess. Or a loose wire or sth.

I was also told my battery was good to go by a specialized battery shop. Battery would go dead in less than two days if not driven. Battery was toast, specialized shop was wrong. I put in a new battery and and installed a battery tender and no issue's in last 4 years.. Your car needs a new battery... just my opinion. Batteries are cheap, chasing your tail not so much.
 
The following users liked this post:
Cee Jay (05-12-2019)
  #26  
Old 05-12-2019, 10:05 AM
Cee Jay's Avatar
Veteran Member
Join Date: Apr 2013
Location: Kaysville, Utah, US
Posts: 5,419
Received 1,146 Likes on 855 Posts
Default

What he ^ ^ ^ ^ said.
I had an F150 that I suspected either the battery or alternator so I took it to a shop. Then a different shop. Then an Autozone, and a different Autozone. Then an O'reilley's.
EVERY PLACE told me something different. I bench checked the alternator myself and found it somewhat bad, then I bought a battery tester and found the battery ALSO not in the greatest shape.
I replaced both, and it went another five years until I sold it.
 
  #27  
Old 05-12-2019, 10:36 AM
Junior Member
Join Date: Dec 2017
Location: Barrie
Posts: 2
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Macc View Post
Well that was not very comforting...situation seems to be same here :/ Have to test the parasitic currents anyway, and perhaps try to get the battery out for some days as Ranchero50 suggested.
well it is comforting to know you are not suffering alone ;-) I will have a long discussion with the dealer next week to try to identify possible causes and will keep you posted. I have learnt that locking the car should shut down all systems except the alarm, but my issue occurs even when th car is locked. Logically this suggests that the system is not shutting down as required, so maybe that is a starting point.

I also found a service bulletin dealing with 2010 -2012 xk vehicles where customers have experienced loss of starting capability, i.e. battery failure. I have attached it so you can see if it applies to you. I do not know if this was done for my vehicle, I certainly did not receive a recall letter, It does point to a software glitch in the battery monitoring system, which is the system that periodically puts the battery in discharge mode to monitor its performance I believe.

I would normally agree with the sentiment of checking the battery and replacing it, but in my case I experienced the problem after a new Jaguar OEM battery was fitted at the dealership, and after they subsequently refitted another new battery. In my case I think it is something more than a tired battery.

By the way, I have fond memories of a visit to Helsinki in 98. The Finnish countryside is so much like of the area of Canada that I live (Muskoka) with pink granite rocks, lakes and trees, etc. I thought I had forgotten to get off the plane!
 
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
99Gsp
F-Type ( X152 )
2
08-10-2017 09:35 PM
LoveHerTopless
New Member Area - Intro a MUST
7
08-20-2015 07:31 PM
billmeridian
XK / XKR ( X150 )
6
03-30-2011 04:37 PM
Sinister 1
XJ XJ8 / XJR ( X308 )
5
01-29-2010 07:30 PM
04Xtype
X-Type ( X400 )
3
01-13-2009 06:56 PM

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

Thread Tools
Search this Thread
Quick Reply: Something empties battery in two days


Advertising
Featured Sponsors
Vendor Directory

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: