How to Diagnose Battery Issues In Your Car | Battery Issues With The F-Type?! 

The battery drain problem for Jaguar cars is not a battery maintenance or monitoring issue, it is a CAN bus communication channel termination issue… which is well documented on the Jaguar Forums. The solution is to disconnect the battery terminal for more than 30 seconds, to force a termination of all of the CAN bus communications. Then, presto! No more battery drain issues… not until you connect some other un-authorized CAN communication device to the car (like an OBDII monitoring device). My car experiences a drained battery after I apply my OBDII reader .. or my Bluetooth OBDII interface unit, so I have to remember to reset my battery each time, or suffer the consequences.

I have just watched your video, its been a great help, thank you very much !!! - I have an f type convertable and if I neglect to connect the trickle charger I am challenged with a plethora of alarm dilemma's !!! - I have just purchased an identical test meter, and hopefully it will assist me to eradicate my problems !!! - Thank you again !

I replaced my battery recently. It died from not being used for about two months. I upgraded to the anti-gravity battery. I was having issues with the battery prior to the upgrade.

I had similar issues with my 2017. The battery terminal was on but loose. Then i discovered my car was keeping the door lock LED and the hazard light button on even when locked. So the car was not going into sleep mode. After 2 days, dead battery. The fix was to disconnect the battery for 20min, connect positive side first then negative. Apparently this happens when the dealer or owner connects a OBD2 reader and does not disconnect it properly. I have a few JAG vids myself.

nice British neighborhood !! thanks for the F type content

The only Jag I've had recently that didn't drain the battery constantly was my F-Pace. My 2016 XE was a nightmare, my 2019 XE not as bad but not great, and my current F-Type gives me that annoying little beep if it doesn't get driven for longer than a week. I don't think it is "issues" per se, I think they just have a lot going on constantly that draws from the battery. The only way to avoid it really is to drive them more, could be worse I guess?

Same problem... because it is the first code with the "pop and bang"... the full power etc... If Jag put the latest code the battery will be ok but your car will loose her spirit.

Hi guys, do you know if a low battery can affect the car alarm?

Many thanks for the video, very good information and link for tester. I just bought a ctek 7 amp version as having low warning just started to appear. Could I ask a question please related to ctek , when you put in mode, do you just choose normal or put to AGM setting. I plan to just charge for roughly 24 hrs like once a week or something as my car is setting out on drive. Thanks , cheers

Question about your upgrade to the 10" entertaintment unit if you dont mind!... LR retrofit have told me you lose access to the climate screen. That wouldnt really be an issue apart from is that the only way to press the sync button for when the passenger changes the temperature on their side? Have you found another way to resync? Presuming youve got the dual climate control in the V8? Cheers!

i had same issue and the drain was coming from my UAD carplay

Have you supplied the correct link? - seems to be an OBD scanner

How To open the door with a flat battery? If using the key then how does the window drop without power?