Driving my 1.8 FR MY16 yesterday and cabin suddenly started getting hot. Found that hot air was coming out of left hand side dash vents (couldn't check footwell) despite temp being set same for both L & R sides and cool air coming out of RHS. Changing temp up and down had no effect, nor did switching on air con. I switched heating off and back on and it then started working normally again and has done on 2 journeys since. Heating works fine otherwise so not a matrix / silikat related issue (bag removed last year). Anyone had this problem ? Looking at workshop manual I'm thinking either the vent trmperature sender or the temperature flap servomotor may have dodgy connection or be faulty ?