Auxillary charging terminals no voltage
#1
Auxillary charging terminals no voltage
I have no voltage across auxillary charging terminals in trunk of my 2010 jaguar xkr. The battery says 13.7 volts but car won't turn over. Battery is a 1 yr old AGM but I suspect something is drawing current as it has gone dead twice in the last week. Any thoughts would be appreciated thank you
#2
#3
#4
I have no voltage across auxillary charging terminals in trunk of my 2010 jaguar xkr. The battery says 13.7 volts but car won't turn over. Battery is a 1 yr old AGM but I suspect something is drawing current as it has gone dead twice in the last week. Any thoughts would be appreciated thank you
Your battery should be under warranty, return it to the store, have them test it and replace it.
Put a maintainer on it and begin your search for the draw. This is a great video on how to test for a draw.
This is a simple process to follow, even if you're not DIY. You can at least isolate where the draw is coming from. Pay attention to his comments after he isolates the draw, such as the system taking 30 minutes to go to sleep as ours do. Also, doors closed etc.
Last edited by Sean W; 11-11-2016 at 03:26 PM.
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JonWat (11-14-2016)
#6
Aux terminals
Thanks to all, battery is now holding a charge and vehicle will start, still no voltage at the aux terminals though, will get dealer to investigate when car goes in for oil change. I can't install the luggage separator and consequently can't get rear windows up, will be a breezy trip to Scottsdale
#7
Thanks to all, battery is now holding a charge and vehicle will start, still no voltage at the aux terminals though, will get dealer to investigate when car goes in for oil change. I can't install the luggage separator and consequently can't get rear windows up, will be a breezy trip to Scottsdale
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#9
The cable runs from the battery and comes up into the trunk through an insulated post. So look under that post location in the trunk.
#10
I have no voltage across auxillary charging terminals in trunk of my 2010 jaguar xkr. The battery says 13.7 volts but car won't turn over. Battery is a 1 yr old AGM but I suspect something is drawing current as it has gone dead twice in the last week. Any thoughts would be appreciated thank you
I recharged the battery and placed an ammeter in series with it to check for battery drain. I did this consistently for a while because the dead battery issue only popped up rarely. While observing the ammeter current draws, I realized that the XKR electric system does NOT shut down all at once. It shuts off in stages over roughly 10 minutes after exiting and locking the car. Finally, I captured an instance where the current draw would not shut down completely but, continued indefinitely at a range of 1.4 amps. That exactly matched the scenario where it would take 2+ days to completely suck the charges out of the battery.
I took the car to the dealer and they referred to a TSB (I think, this was years ago) which stated that "rarely, the infotainment system fails to shut off upon exiting the vehicle". They simply ran a software update and my car appears fine ever since.
A voltage read of 13.7 on your battery is normal only while it is being charged or shortly after the charging is removed.
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Sean W (11-15-2016)
#11
I have attached the relevant TSB.
#13
You may want to consider buying a CTEK MUS 4.3 battery maintainer to properly maintain the battery in the vehicle. Many of us Jaguar XK/XKR owners are using this device. I own 4 and use them on my premium automobiles. I have never had any respective battery issues since using the CTEK battery maintainer.
https://www.amazon.com/CTEK-56-864-A...s=ctek+mus+4.3
https://www.jaguarforums.com/forum/x...lation-107738/
The information about may help your cause to eliminate battery issues.
..
https://www.amazon.com/CTEK-56-864-A...s=ctek+mus+4.3
https://www.jaguarforums.com/forum/x...lation-107738/
The information about may help your cause to eliminate battery issues.
..
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Sean W (11-17-2016)
#14
TSB
I had the dealer do the mentioned TSB, only $160, not bad for .4 hours according to the procedure. Scottsdale Jaguar will never see that car again, also$250 for the oil change and $160 to recalibrate the convertible top. Anyway picking it up today will see if they managed to fix the 0 voltage in the trunk. I did check the wiring under the bumper and everything looked to be in order but I will have to have that situation rectified prior to putting the car in summer hibernation as I will never take that luggage separator out again if I'm not next door to a dealership. Thanks to all for the contributions.
#15
#16
If you still have 0 volts on that terminal then I think you may have a bigger problem then you think. Measure it again and use the stud in the spare tire area as your ground as it states in the OM . Then touch your pos. meter probe on the terminal under the rubber boot. Tell us what you get because if you hook up a smart charger you would most likely use this terminal as the pos clamp.
#17
Aux terms
Do you mean the boot under the car because there is no boot over the positive terminal in the trunk just the bare aluminum bracket that seems very flimsily attached.. I must admit that I didn't use the post as my neg, just the other aluminum bracket beside the pos. This is also where I hooked my battery pack to try to start it when the battery was flat. Didn't work though Mea culpa Stupid!
I notice everything else seems to be functioning correctly after my visit to the dealer
I notice everything else seems to be functioning correctly after my visit to the dealer
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#19
Unfortunately there is no cure for stupidity, I have been using the wrong location as positive. I just noticed hiding down there, a boot covered terminal and, of course, it is giving me a reading of 12.44 volts. I apologize for wasting people's time and again thank you for the responses. It would seem that after getting the aforementioned TSB update that the battery might no longer have a parasitic draw, here's hoping!
When my face returns to it's normal colour I might dare to mention my key fob which seems to have lost it's programming over the summer, I have tried 2 new batteries to no avail.
When my face returns to it's normal colour I might dare to mention my key fob which seems to have lost it's programming over the summer, I have tried 2 new batteries to no avail.
#20
Do you mean the boot under the car because there is no boot over the positive terminal in the trunk just the bare aluminum bracket that seems very flimsily attached.. I must admit that I didn't use the post as my neg, just the other aluminum bracket beside the pos. This is also where I hooked my battery pack to try to start it when the battery was flat. Didn't work though Mea culpa Stupid!
I notice everything else seems to be functioning correctly after my visit to the dealer
I notice everything else seems to be functioning correctly after my visit to the dealer
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ralphwg (11-19-2016)