Thanks for the info.When I bought my car (2010 5.0 NA) it had similar, but not identical, problems with overheating. Or rather erronous overheating indication. After driving for 20 minutes or so, the orange overheating warning was shown, followed a minute later or so by red. The car acted like it had overheated, immediately on red warning the air condition was turned off (which once caused me to nearly crash on the motorway when the windscreen fogged up in three seconds or so ) , and cooling fans ran on high speed until several minutes after stopping the engine. However, I could not see any evidence of actual overheating.
A lot of things were attempted by both the dealer where I bought the car and the licensed Jaguar workshop, including new thermostat, new engine coolant temperature sensor, troubleshooting a lot of wiring and I don't know what else. What cured it was when they replaced a temperature sensor - I don't know what this sensor measured - that required taking out the gear box to be able to access this sensor (!).
I've seen mention of this secondary temperature sensor elsewhere online and fear this may be what needs changing.
I'll see if I can find any further information about it - then discuss it with my local Jaguar specialist.
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