Originally Posted by
mohammad
Mark do you have any idea if both your relays control the same PTC heating element? or why they would use multiple relays to control one element?
I believe there are multiple elements in the heater box. 1 element per relay? Why the don't just use one big relay and fuse I don't know, maybe incase one craps out the others will continue to work?
2015 and older have 1 more relay(3?) than 17' and newer(2). They don't heat the engine. Little efficient engines take a while to get hot so they use little toaster looking elements in front or behind the heater core to help get heat in the cabin quicker.
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View my fuel log 2014 Mirage SE wussie cvt edition. 1.2 automatic: 37.7 mpg (US) ... 16.0 km/L ... 6.2 L/100 km ... 45.3 mpg (Imp)