XK / XKR ( X150 ) 2006 - 2014
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Car battery is always empty

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  #21  
Old 08-28-2018, 11:21 AM
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Don’t even have to latch the trunk/boot, the car will eventually ‘go to sleep’ and turn off the trunk/boot lights.
 
  #22  
Old 08-28-2018, 01:10 PM
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Originally Posted by kj07xk
don’t even have to latch the trunk/boot, the car will eventually ‘go to sleep’ and turn off the trunk/boot lights.
yes it will but you want to check with the security system active to see if thats a issue as well and it will not arm if everything is not latched
 
  #23  
Old 08-28-2018, 01:24 PM
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I just add the picture of the battery. its the right one I think?
 

Last edited by Jagstefano; 08-29-2018 at 12:53 AM.
  #24  
Old 08-29-2018, 12:54 AM
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I just checked the battery after fully loaded with a battery charger. First it was 12,8 va when I just removed the battery charger.
after a night standing. its not over 12,66 va.

Its not the battery right? if not I am going to check the relay
 
  #25  
Old 08-29-2018, 06:33 AM
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Time to start checking out relays.
 
  #26  
Old 08-29-2018, 09:57 AM
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As i posted earlier. I dont think you have a draw i think your battery was too low which can keep the car from going to sleep or wake the modules up running the car all the way down. Now that you have a fully charged battery that maintained a full charge over night just monitor voltages over the next few days. In the overall scheme of things draws while they do happen are actually pretty rare
 

Last edited by Brutal; 08-29-2018 at 10:02 AM.
  #27  
Old 08-29-2018, 11:19 AM
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Buy a CTEK battery maintainer and use it daily to keep your new AGM battery fully charged.

Your 2006 4.2L XK (X150) came from the factory with a conventional "flooded" (wet cell) battery. Your new Mercedes Benz branded Varta battery is a different technology - AGM (Absorbed Glass Mat), which has a different charging profile. What that means is that your alternator might not be properly charging the battery, particularly if you mainly take short trips. To remedy this, use a CTEK maintainer - it is compatible with both AGM and conventional batteries and will automatically select the right charging profile.

There are many threads on this Forum about how to install a CTEK battery maintainer.
 
  #28  
Old 08-29-2018, 12:01 PM
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Originally Posted by Stuart S
Buy a CTEK battery maintainer and use it daily to keep your new AGM battery fully charged.

Your 2006 4.2L XK (X150) came from the factory with a conventional "flooded" (wet cell) battery. Your new Mercedes Benz branded Varta battery is a different technology - AGM (Absorbed Glass Mat), which has a different charging profile. What that means is that your alternator might not be properly charging the battery, particularly if you mainly take short trips. To remedy this, use a CTEK maintainer - it is compatible with both AGM and conventional batteries and will automatically select the right charging profile.

There are many threads on this Forum about how to install a CTEK battery maintainer.
So effectively saying what poster 20# said in more words?

Would suggest you simply fit the correct battery for your car
 
  #29  
Old 08-29-2018, 12:36 PM
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Uh oh, i guess i should take out the jaguar agm in my 04 vdp thats been in there 2 years. Doh
 
  #30  
Old 08-29-2018, 01:18 PM
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Originally Posted by Brutal
Uh oh, i guess i should take out the jaguar agm in my 04 vdp thats been in there 2 years. Doh
Erm nope, if yours was specifically for the model marque then it's OK, but the OP has the battery designed for a lesser marque in his jag
 
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  #31  
Old 08-29-2018, 02:23 PM
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Originally Posted by Brutal
Uh oh, i guess i should take out the jaguar agm in my 04 vdp thats been in there 2 years. Doh
Nice try, but that's not what I said. AGM is the superior battery technology, but the X150 charging system was not designed for AGM and doesn't provide the optimum charging profile. Nevertheless, many X150 owners have successfully made the switch to AGM without any problems. All I'm saying is that if you're having problems with your AGM battery, a CTEK may cure them.

 
  #32  
Old 08-29-2018, 02:26 PM
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Originally Posted by MarkyUK
Erm nope, if yours was specifically for the model marque then it's OK, but the OP has the battery designed for a lesser marque in his jag


P.S. ... but I'm pretty sure that Varta will put the Jaguar logo on the same battery if it fits and meets Jaguar specs. Varta is a German company that is owned by Johnson Controls. They often provide the identical battery for sale by retailers under different brand names at varying prices.
https://en.m.wikipedia.org/wiki/VARTA
 

Last edited by Stuart S; 08-29-2018 at 02:35 PM. Reason: Added P.S.
  #33  
Old 08-29-2018, 04:50 PM
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Originally Posted by stuart s
nice try, but that's not what i said. Agm is the superior battery technology, but the x150 charging system was not designed for agm and doesn't provide the optimum charging profile. Nevertheless, many x150 owners have successfully made the switch to agm without any problems. All i'm saying is that if you're having problems with your agm battery, a ctek may cure them.
lol i tried
and varta does make jaguar batteries
 
  #34  
Old 08-29-2018, 05:32 PM
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Originally Posted by Brutal
lol i tried
and varta does make jaguar batteries
When at first you don't succeed ...
Varta also makes batteries for ... Costco!

P.S. I still owe you for your advice to use the compact spare from the XJ SuperSport.
 
  #35  
Old 08-30-2018, 05:59 AM
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Have looked at the battery today and stay neatly at 12.64 volts.
so it was not on the battery.

I took the battery to the car and did the test for the relay there. the multimeter is put between the battery and turns out to be 0.00. So no loss on Relay.

that is good news. Dynamo good. relays well! So the battery runs out slowly and does not appear to be good. Good tip that there is a difference between Flooded and AGM batteries. The alternator therefore does not charge the battery properly so that the battery runs out more and more slowly, so it is solved right now
 
  #36  
Old 08-30-2018, 06:49 AM
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When you say "multimeter" are you sure you have it set to "amp"? You are not looking for voltage with this test but current (amperage) draw. A zero reading would seem too low since it is expected to have a miniscule draw all of the time.
 
  #37  
Old 08-30-2018, 07:34 AM
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Originally Posted by Jagstefano
...I took the battery to the car and did the test for the relay there. the multimeter is put between the battery and turns out to be 0.00. So no loss on Relay.
I am going to question your DC current measurement technique. While you have the multimeter connected, open a door so that the interior lights come on.

1. Do the lights actually turn on? If no, then you have incorrectly connected the meter or you did not set the meter to read DC amperes.
2. What current reading do you see on the meter with the interior lights on? Considering that the lights and some of the electronics (such as the center display) will turn on, you will see a current draw of several amps.
3. You need to be careful not to turn on too many devices as the meter has a limit to the amount of DC current that it will handle. An internal fuse will blow within the meter if you apply excessive current through it. For example, most digital multimeters can handle up to 10A current. This rating typically is indicated on the meter case.

Originally Posted by Jagstefano
....Good tip that there is a difference between Flooded and AGM batteries. The alternator therefore does not charge the battery properly so that the battery runs out more and more slowly, so it is solved right now
It is true that the optimal charging strategy differs for flooded vs. AGM batteries. However I doubt that is the root of your car's problem.
 

Last edited by Patrick Wong; 08-30-2018 at 07:40 AM.
  #38  
Old 08-30-2018, 08:42 AM
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Originally Posted by pwpacp
When you say "multimeter" are you sure you have it set to "amp"? You are not looking for voltage with this test but current (amperage) draw. A zero reading would seem too low since it is expected to have a miniscule draw all of the time.
Selecting AMP will most likely overload the meter since they aren't intended for current levels beyond an amp or so. You'll see that powering up all of the modules.

To the OP, when you shut the door click the lock button on the outside door handle twice. This tells the car to go to sleep immediately and will help keep the battery from draining.
 
  #39  
Old 08-30-2018, 10:46 AM
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Default Car battery is always empty

It's very simple XK's require a fully charged battery! it doesn't matter what type (wet cell or AGM) .It seems you didn't have a fully charged battery (new usually are not!).
I personally use a wet cell and a CTEK charger always connected BUT many members use AGM's without any problems....as long as you use a charger to maintain
adequate Voltage .Even my Dealer now understands this!

Cheers, Adrian

 
  #40  
Old 09-02-2018, 07:39 AM
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Strangely that it is not going well, I think.

I have tested the battery again. I do well because he continues to indicate 0.00.
What am I doing wrong because it indicates nothing now?
 


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