Dead battery issue

[Geoff805]

Thanks @Beltupandholdon.. No the battery was replaced with OEM battery only 7 months ago.. it has to be something else given that it was literally fine one minute and then completely dead the next..!

[RPSN]

I finally found the problem causing all or my issues... Leaks into the boot and blocked drain plugs have over time allowed the water to damage and corrode the Battery Terminal Fuse box

I found the leak, but in the end had to replace the Battery Terminal Fuse Box which being at the bottom of the boot well was very corroded.

As you’ve already replaced the fuse box on the boot floor which was heavily corroded and damaged due to water leaks, when you eventually get the boot open, check the battery negative earth connection on the boot floor (indicated by the black arrow in the attached pic) to ensure it’s tight. If so, slightly loosen it and give the cable a little wiggle then retighten it, as this will help to remove any corrosion and make a good contact. This has been the cause of some electrical gremlins on other F-Types.