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Tonight my Vanquish dash light showed high temperature stop and the coolant gauge went to max temperature. I checked the coolant and it was fine no signs of a leak. The fans were running full blast. I think it might be a coolant sensor. The car has a timeless warranty but the dealer is about 100 miles away. If it is an easy fix I might try it myself. I found the sensor and will see if I can get a replacement at the auto parts store tomorrow.
On my 2006 DB9 the coolant sensor is a Ford part with a Ford part number on it. $26 at the local parts store, $475 at the dealer...
If you have a digital multimeter you might remove it and put it in a pot of water on the stove. You can test it pretty easily by observing any impedance change as the temp goes up (or lack there of!).
Well I replaced the coolant temperature sensor and it still does the same. Temperature gauge is pegged to hot and the message says to stop and the fans are running. So I think I will call Aston Martin Orlando. The car has a timeless warranty, so might as well have them fix it.
Just got the car back from Aston Martin Orlando. They reset the codes and everything is good now. I guess that it was the coolant temperature sensor, but I didn’t reset the codes. All is good now. They have a beautiful new Vanquish finished in green with a tan interior. $551,000. Very nice but I’ll keep my red one. The also have a special Aston that was 2.7 million, that’s just crazy and finished in a flat black.
