Car alarm going off trying to charge dead battery
#1
Car alarm going off trying to charge dead battery
Hey everyone! I have owned my 2017 F-Type SVR for two months and have had no issues until recently. I always usually get a "low battery" warning but hasn't died until recently. I had it die on me overnight for some reason, and I jumped it with a portable charging/jumper box. A few weeks later (now), I came back from a business trip, and it died again. The car alarm goes off whenever I try charging/jumping the battery. The emergency key is in the door. I have tried locking and unlocking with the key fob, but nothing seems to have worked from what I see online. I believe the issue is that the previous owner drained the battery too many times as he only drove it 3500 miles over five years. I have a service appointment with JLR next month to get that fixed.
However, I still need my car before then. How do I get this car alarm to stop?
Thanks,
HarrisonSVR
However, I still need my car before then. How do I get this car alarm to stop?
Thanks,
HarrisonSVR
#4
You don't have one under the hood, so that makes it simpler. You can get an Interstate battery at Costco pretty reasonably, if you don't mind changing it yourself. But, you can also go to most car part stores and they'll do it for you. You'll have to reset the auto windows after the change. (See the "How To" sticky)
#6
#7
Seems odd that connecting up to the front posts sets off your alarm. That being said, put real charger on the engine bay posts, while it seems like your alarm will go off you'll be able to power the rear hatch and raise it. Then you can remove the jumpers off the engine bay posts.
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#8
Try this thread for a view of where your battery is at and how to get at it.....Datriani does a wonderful job of explaining how to get at the battery with great photos......
https://www.jaguarforums.com/forum/f...talled-251164/
https://www.jaguarforums.com/forum/f...talled-251164/
#9
My battery went flat some time ago and when the service guy connected to the underhood jump terminals the alarm went off. I suspect the logic is that the car thinks the battery was removed as part of theft activity and reapplying power triggers the alarm. The service guy knew it would happen and told me to stand by with a fob to turn it off.
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SVR 575 (07-20-2022)
#10
My battery went flat some time ago and when the service guy connected to the underhood jump terminals the alarm went off. I suspect the logic is that the car thinks the battery was removed as part of theft activity and reapplying power triggers the alarm. The service guy knew it would happen and told me to stand by with a fob to turn it off.
#12
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#16
Have you also tried putting new batteries in your key fob??
thats the only logical reason why you cant still get access and the alarm going off. If there is enough current to run the alarm there will be enough to pop the trunk latch so the car must not be able to read the presence of your key fob and will remain in locked mode. Also can you not open the door with your emergency key and then hold the fob next to the panel just below the steering wheel as another option
thats the only logical reason why you cant still get access and the alarm going off. If there is enough current to run the alarm there will be enough to pop the trunk latch so the car must not be able to read the presence of your key fob and will remain in locked mode. Also can you not open the door with your emergency key and then hold the fob next to the panel just below the steering wheel as another option
Last edited by Borbor; 07-21-2022 at 07:56 PM.
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scm (07-22-2022)
#18
#19
Did you manage to get the trunk open?
I'm having the exact same problem after getting my car smog tested. Didn't drive it for a few days after and the battery is now completely flat.
Hooking up a battery charger to the posts under the hood starts setting off the alarm and nothing else is responsive(no interior lights/dash/power locks/key fobs unresponsive).
Do I just have to suck it up/**** off all the neighbors and let it charge? The longest I've kept the leads on is enough time for me to do a few laps around the car to check if any of the inputs are responsive.
I'm having the exact same problem after getting my car smog tested. Didn't drive it for a few days after and the battery is now completely flat.
Hooking up a battery charger to the posts under the hood starts setting off the alarm and nothing else is responsive(no interior lights/dash/power locks/key fobs unresponsive).
Do I just have to suck it up/**** off all the neighbors and let it charge? The longest I've kept the leads on is enough time for me to do a few laps around the car to check if any of the inputs are responsive.