Hi
I have an A4 B8 2009. I have changed thermostat and sensor and still, my thermostat does not rise. On long runs, it might rise to 60/65 but very rarely. It takes an age for warm air to come in the heater (maybe 15-20 miles) and when it finally does come, it's nowhere near as hot as it should be even when set to HI. What am I missing?