Went on a motorway trip on tuesday and ended up being recovered twice by the RAC. First time a heater hose had split, this was a horseshoe shapped one that the RAC man replaced with a straight piece that kinked and stopped the flow to the heaters!!. That sort of fixed, and 26 miles later, the top of the radiator split, both times resulted in the temp gauge going to max with the red light on. During all this the auto box would kick down two gears when I touched the accelerator at 50 mph,I cant see that being correct?.or is it?.This morning driving the RR into shed the message GEARBOX FAULT showed on display and torque converter started to slip. Tuned engine off started again and gearbox worked fine, are these faults connected ? or am I just unlucky.