so we replaced the valve sensors and seems a little better.
question on flashing the memory-is there a back up battery. i tied the pos and neg cables together and left over nite.
however-did not clear check engine light, did not loose presets in radio, time still correct on nav. and the garage door code is still correct.
did lose trip info and window settings.
still getting restricted just not as often and stays off longer.
my scanner died so not sure if the codes have changed so need to get them read and cleared.

 

No back up battery I know of but here’s a link to Jag repair’s hard reset procedure JagRepair.com - Jaguar Repair Information Resource