Infiniti Q45 Blower Motors
The blower motor in the Infiniti Q45 luxury sedan sends heated and cooled air through your climate control system vents. You can get these parts as a genuine OEM part from Infiniti or Nissan, or from an aftermarket brand. Some of the brands offering this part include TYC, Global Parts Distributions, Four Seasons, Dorman and ACDelco.
How does the Infiniti Q45 blower motor work?You will find the blower motor fan in the Q45 model Infiniti behind the HVAC evaporator. When you turn on the air conditioner, this fan will blow air over the cold evaporator, and then the cold air will move through the ventilation system. If you put on the heat, the blower motor sucks air in and blows it over the heater core before it enters the ventilation system.
How do you know when this part starts to fail?A decrease in air pressure is the most telling sign that this piece is starting to fail or is broken already. The heat or cold air may still come out, but the pressure will not be as strong as usual. This decrease in air pressure inside the vehicle will be apparent at any temperature or fan speed.
If you hear a grinding or rattling sound from the floorboard of the luxury sedan when the air is on, the fan bearing or fan blades may be broken. This sound can occur at random in this Infiniti vehicle, regardless of the fan speed you choose. Another sign that the blower motor may be failing is an uneven or undulating air speed through the vents.
When do you need to replace the Q45 blower motor?You can still drive the Q45 model with a broken blower motor, it just may be uncomfortable and inconvenient, temperature wise. There are no safety hazards or risks of damaging other parts of the vehicle created by driving with a failing blower motor. Failure is more common in vehicles with high mileage, but the amount of mileage is not necessarily the determining factor in the failure rate.
The Q45 plastic fan blades can deteriorate and become brittle over time, so the age of the vehicle is certainly a factor. If enough debris enters the HVAC box, the blower motor could be destroyed eventually, regardless of the age or mileage accumulated. The frequency of use may also have an impact on how long the blower motor lasts in the Infiniti Q45.