I've owned a Jaguar for three days and it's already in the shop!
#23
02-14-2014, 10:09 PM
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Location: Horseshoe Valley, Ont, Canada
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And if this XK is not going to be used FREQUENTLY, do yourself a favour: get a CTEK battery maintainer, install it permanently and use it when the car is in the garage. That will eliminate any battery worries and the random and perplexing electronic glitches that low voltage causes in these cars. Virtually every electronic gremlin is caused by the battery! These can range from odd warning lights, to window, seat, hood operation being erratic or non-existent, SatNav problems, etc - all caused by a battery not kept at full charge. (this is not an opinion, it is an experience-based statement).
#24
03-21-2014, 07:28 PM
You may need to do a hard reset on the infotainment & sat radio systems - pull fuses 21 (15A blue) and 25 (10A, red) in the rear fuse box behind the vertical panel between the back seats, leave them out for a minute or so, then bung them back in. No guarantee this will work, but it's worth a try.
Thanks
#25
03-21-2014, 07:40 PM
Veteran Member
It may be better to do it with the ignition off, just to avoid a bunch of error messages popping up on the dash.
Basically, even when the ignition is off, the various modules are still powered up. They draw a tiny current, just enough to maintain the 'volatile' working memory that contains various learned settings. The main firmware & factory settings ('maps') are stored in flash memory that isn't affected by power loss, but when you pull the fuse, all the volatile memory is erased, and the module reboots when you bung the fuse back in.
Basically, even when the ignition is off, the various modules are still powered up. They draw a tiny current, just enough to maintain the 'volatile' working memory that contains various learned settings. The main firmware & factory settings ('maps') are stored in flash memory that isn't affected by power loss, but when you pull the fuse, all the volatile memory is erased, and the module reboots when you bung the fuse back in.
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