Just wondering Graham, did you/do you, leave the Lexus in P with or without the foot operated brake being applied?
I always just leave it in P, rightly or wrongly, for fear of brakes not freeing.
I`m sorry to learn of your situation, but hope that all is soon back to normal.
My wife and I are holidaying up near to you (Cromarty) in July and I do not wish to see a Black Shogun in my rear view mirror!
Regards
John