Does anyone know if this fault been pinpointed? I have the same problem. “Drive modes not available” whenever stop/starting when engine is hot. Today the warning light came on mid 25min drive from cold (oil temp still rising). Just wondering if I should just fit a blanking plug or persevere with the dealer to get a fix (software update/hardware replacement like some folks have done). Dealer said they would fix this issue at first service (but obviously not). That’s a 300 mile round trip (again)!