I'll be disconnecting my 3 month old battery for a few days as I carry out a few tests on my car. I'm aware that I'll need to reset my radio stations, seat adjustments, and windows which I've done before. Is there anything else that is critical after reconnecting and/or replacing battery? My 2010 XK has the BMS (Battery Monitor System) and I've disconnected my battery in the past (years ago) without any issues. I've read different opinions about the BMS but haven't heard of any issues with owners who have replaced batteries in the past. My local Jaguar dealership had told me that they don't do anything special during battery replacement. Anything else I should know?

 

Whenever I disconnect, the only thing I lose is the Windows setting. All else remains. Seats, radio, but lose the trip meter. It dries easier afterwards, but soon gets to know me again.

 

When I had the battery disconnected (about 48 hours) while I changed the alternator, All I had to reset was the windows, E-brake and the clock.

 

Thanks Jack... I wouldn't expect you to have any problem as you own a 2007 XK. It's really the 2010 XK-2015 5.0 with the battery monitoring system that was of some concern. It seems there was some question of the alternator resetting it's rate of charge for any new battery that was being installed. Apparently, from what I've read, the car seems to re learn these settings on it's own with out any help from the Jaguar dealership.For what it's worth, I have always had a flooded battery and my replacements have been flooded batteries. Key here supposedly is to remove the negative cable first during removal of the battery and installing the negative cable last when reinstalling.