The Toyota avensis heater not working causes are a loose heat coil and an inaccurate thermostat. You will come across a few annoying noises from the air conditioner. Loose mounting bolts will become a nuisance. A bad compressor will get noisy. Too much Freon will make this happen. These sounds need to be look into quickly or You will lose Your mind. Being sweaty from the heat is never a good time. That's why the air conditioner needs to be in top shape. You will face issues with this part at some point. A smelly odor from the vents will cause problems with Your comfort. An inaccurate thermostat might come about. The motor could become faulty. A Freon leak will give You the sweats. A fan might become loose.
Jenny
August 7, 2023
My first thought would be a bad or burnt out fuse. Other than that, I have no idea.
Christopher T
July 30, 2020
If the heater is not working in your Toyota Avensis check for a broken heater blower motor, a problem with the thermostat, or a failed heater blower motor resistor.
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