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Hi Guys.. Can anyone assist with this .. On starting and initial 30 minutes driving.. the passenger heating system works perfectly .. but after that the whole passenger side reverses itself and when I turn the heating to Low it blasts out very hot air from the middle dashboard vent and if I turn it all the way up to Hi max heat it blows cold ???? .. anyone any ideas Had a similar problem on a Merc that was a temperature sensor Any help would be appreciated and hope you all have a great New year Cheers