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melgriffith

2012 Edge SE heater not working

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Hello

I haven't used the heater since March. I used the heater today, it was a bit nippy after work, and the heater didn't work. I checked the fuse, tested the AC, everything looks good. Anyone know why the heater isn't working?

 

Mel

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AC was blowing cold air? When on heater, is air coming out? Was the Edge already a bit warmed up before you used the heater? If the air is not coming out warm, could be a plugged heater core.

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Hi

Yes, AC does blow cold air.

For the heater (turning temp control knob to full heat) air does come out. Ran the heater for 30 mins during the commute home, no heat.

 

Thanks

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Per my 2007's shop manual, these are the diagnostic steps:

  • Low engine coolant level
  • Engine overheating
  • Plugged or partially plugged heater core
  • Temperature blend door is binding or stuck
  • Temperature blend door actuator
  • Heater hose is kinked or binding (check very carefully when engine is warmed up, may be hot enough to burn)

The actual controls (mechanical/electronic) are not mentioned, but there could be a fault in there as well.

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Check your engine temp. If it's running cold, the thermostat could be stuck open and only running cold antifreeze through the heater core. Also check the hoses under the hood at the firewall once the engine is worm. Both hoses should be hot.

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Most common failure is the climate control module. You would need to hook a scan tool to it and start a diagnostic or even try to reprogram it. If programing does not work then a replacement may be the solution.

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Oh it gets better.

Passenger side blows heat driver side does not.

Anyone come across this situation ?

2013 SEL

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Oh it gets better.

Passenger side blows heat driver side does not.

Anyone come across this tsituation ?

2013 SEL

Single or dual controls?

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Disconnect battery neg terminal. Sometimes this helps reset things.

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