Hi all. I had a problem a couple of weeks ago when my trip computer display started showing temperatures of -35 to -40. Now it's been cold, but not that cold.
Simple fix was to replace the external temp sensor in the lower grill, which fixed the problem fine. (And only cost £9.20). That worked for a couple of weeks, but this week the display started showing -35 again. The it stopped showing the actual temperature and displayed the letter 'F' instead, which I assume means 'Fault'.
Today I replaced the sensor with another brand new unit. Whereas last time the temperature came up immediately, this time it won't budge from 'F'. I have checked the condition of the wiring, and made sure the connectors were dry but still no temp displayed. Normally I would ignore something as trivial as this but since the aircon won't work below -4 degrees and the car thinks it's -40 I have a problem. I have studied the wiring diagram but can't see anything obvious. The characters in the display work perfectly in all other modes. I have tried disconnecting the battery and re-setting everything but it still comes up 'F'. I think I know what the 'F' really stands for now.
Anyone got any suggestions as to how to fix this?