Skip the auto shop - Our mechanics make house calls

Q: No air flow in a/c or heater

asked by on

The a/c is broken in my car and won't blow air. I'm in-between jobs and can't afford to go to the dealership any time soon. I've done a little car repair myself in the past. Could you give me steps on how to replace the system?

If neither the AC or heat blows, the problem is with the blower motor or its control circuit. In your vehicle, the blower circuit consists of the heater fuse, gauge fuse, heater relay, blower switch, blower relay, and blower motor.

A problem anywhere in this circuit could render your blower motor inoperative. The blower motors are known to go bad on vehicles such as yours, so that would be my best guess. However, you’d want to start with the easy stuff first, like checking the fuse and relays. If you decide to have a professional repair your Yaris, I suggest you give the team at YourMechanic a call. We have expert technicians on staff that can take a look at your AC system and recommend an appropriate repair.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: When the heat is on cold air comes out one side. And it also run hot when im driving

Hello. The climate control utilizes many "blend doors" and valves to control the cabin temperature. Its likely that one of these doors has failed to direct the heat from the heating system to the passenger's side of the car. This...

Q: I can't figure out why my car won't turn over without a jump even though the battery is fully charged.

If the engine cranks fine as soon as you connect jumper cables then you most likely have corrosion on the inside of the battery clamps where they touch the battery post. You should disconnect each battery clamp and clean them....

Q: My AC compressor locked up and my steering wheel belt snapped and my car begin to overheat. What is the cause?

Either the air conditioning compressor or clutch has failed. Most of the time the clutch fails and locks to the compressor housing causing the compressor to not turn. If the air conditioning was off when the belt seized, then the...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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.