01 BMW X5 temp. 1/4 when heater is active
Thanks for the replies.
I have a maxisys 901bt tablet scanner that confirms the temp is running low when the heater is active. I have had 3 thermostats (1 old type and 2 new models) and I have had the problem with all 3, so i dont think it is the thermostat.
It may be the clutch fan possibly though. It is original. Easy enough to change.
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