Car battery died can't get in the trunk to charge battery.

No mention of make/model but does key fob open doors OK? If so it isn't the fob batteries... Could still be a bad button on the fob but it could be a balky solenoid on the trunk latch. Maybe try 12V direct to the solenoid?

First things first...replace the cheaper part first, the battery. It that works, great! If not, then you may need a new key fob then have it programed to your system.

When you press the trunk open button, do you hear any "release" noise come from the trunk area? The issue may be a bad battery in the key fob OR there could be an issue with the transmitter located inside the vehicle. Do the doors lock and unlock properly? is the vehicle equipped with security or immobilizer? please advise

Lower the back seat and crawl into the trunk and see what the latch is doing when you activate the key fob. the trunk lid will have to be open to enable any repairs. Also an emergency release cable is probably visible (yellow handle) inside the trunk and will Open the trunk lid.

i am sure this vehicle has a key slot and its behind the emblem ,seem to remember this question before and i wasnt sure but they posted a answer and their was a key hole behind the jaguar chrome strip thats across the boot lid ,but this may have been a different year ?? but as the battery is in the boot it must have access if it goes flat

I work for a doctor and a patient just had this same problem. She had a extra fob in her trunk so we opened the trunk with the key and got her other fob but I am wondering why the key does not fit the lock on the driverside

Assuming the car battery is ok (if not, buy a male to male cigarette lighter at the auto store and connect to another car until charged enough to unlock the doors...but don't try to crank the ignition!). The trunks won't open if the battery went dead with the alarm set because arming the alarm physically locks the releases.

Sounds like the key code is switched off because you replaced the key fob battery. Try unlocking the car manual with the key in the door lock. Then switch the ignition on to reactive the keyless entry. If this does not work, you might also try pressing the fob unlock button with the key in the door lock until the dash led flashes.

Yes, insure that you have power to the trunk lock inside trunk, If not could be lose/broken wire or shot fuse. I am sure the key fob does work for the doors? If not have key fob battery replaced. Also, a quick check on power to trunk lock, check to see if have remote power button inside car, if it works power is good. Defective key fob would then be indicated.

I simply opened the bonnet. Connected the battery charge positive to the + feed on the back of the alternator, connected the negative to the body. Turned it on, immediately the interior light comes on. Turn on the ignition press the cabin boot switch and it opens the boot. Charge battery as normal. Easy Peezy