Q: Defroster works - hot or cold air depending on what temperature you have it on, but not vent or heat. 2011 Ford Edge

asked by on

Ok...when you turn the defroster on it will work and blow out hot or cold depending on the temperature you have it set on. However, when you turn the defroster off and just try to let it vent into the car it works some of the time. It was making a weird noise and stopped blowing air out. I tried it again the next day and it worked. This has been happening off and on the past few days. When it's not working, I heat the car with the defroster on. Is the blower fan or something fixing to go out? I'm pretty sure the ac still works, as in gets cold, it just doesn't won't to blow out all the time just like the heat. The blower fan when it was making noise sounded sick, you could tell it was fixing to go out. Why would it be working now?

My car has 122720 miles.
My car has an automatic transmission.

Hello - your symptoms suggest that the HVAC blower motor resistor has failed. The blower motor resistor limits fan motor speed for the Low and Medium settings, but is not involved at the Max setting. Since defrost on most cars uses the Max fan setting, the blower would work for Defrost but not for Heat or Vent. I recommend a fan not working inspection performed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, confirm this diagnosis, and give you an accurate assessment of damage and cost estimate for repairs.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Defroster works - hot or cold air depending on what temperature you have it on, but not vent or heat. 2011 Ford Edge

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: My heat/ AC blower motor does not work, the blower is good, the resistor has been replaced, and the relay is good. What am I missing?

Hello. There is a service bulletin out relating to the blower motor of 2003 Suburbans: 11046. It pertains to the blower motor electrical issues Chevy experienced during that time. The electrical terminals were essentially melting. It is a fire hazard....

Q: Car makes clicking sound, but doesn't start.

It is very possible that the battery may be compromised. When a battery is drained completely it becomes very difficult for it to charge back up again. Severe damage may have occurred within the battery while it was draining. I...

Q: I spilt coffee on my dash were the climate control is and now none of the dials work - climate control is stuck on off but is on

When a liquid like coffee gets into components it will short out the electronics. You will most likely need to replace anything that got coffee spilled on it. You may try to remove the controls at the dealer and have...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.