While air conditioning used to be a mere comfort, it has become a mainstay in vehicles and a necessity for most drivers. During warmer seasons it can be the deciding factor between a productive or a wasted day. Also, prolonged drives in uncomfortable temperatures can negatively affect both your health and driving skills.
It can be difficult to uncover the exact cause of air conditioner failure, even harder if you do not know where to look. However, understanding the common reasons for AC failure could allow you to solve the problem yourself and spare your finances a costly trip to a mechanic. Read on for a list of common problems and components related to AC failure in a Toyota Camry.
Toyota Camry AC Not Working
There are many reasons that your air conditioning system is not blowing properly. The most frequent issue has to do with the condition of your internal fan, otherwise known as the motor blower.
There are other less common part malfunctions that can cause your AC to fail. However, it makes sense to begin with the most likely culprit.
Toyota Camry AC Fan Not Working
The AC system of most modern vehicles is paradoxically complex and intuitive. With just the turn of a dial, you are given full control over the temperature of your car. However, behind that dial is a complicated series of components that automate the process. These include:
- Control modules
A process with many parts is also one with many chances to malfunction.
Among these parts, the most direct cause of fan failure is a problem with the blower motor. The blower motor is the ‘fan’ that pushes treated air into the interior. Malfunctions are usually due to overheated resistors which can result in partial or total failure of the part. Resistors require only rudimentary mechanical skills to replace.
Toyota Camry AC Blower Motor Noise
Any sound coming from your Camry besides a purring engine is rarely a welcome one. So, when you turn on your AC and your dashboard vibrates accompanied by low grinding noises, it is understandably worrying.
It is a simple procedure to confirm if the sound is coming from your blower motor. Does the sound escalate when you increase the intensity of your AC? If it does, then simply remove the blower motor from your car, and check it for any debris. Oftentimes, it is a branch or other obstruction causing the motor blower to fight and grind when turned on.
Toyota Camry AC Not Blowing
Vehicle AC systems function by taking outside air and repurposing it for your cabin. To do this, cars have input and output vents that are responsible for circulating air and keeping your air conditioning running. Check to see if either of these vents is clogged or damaged as your AC cannot run if so.
Any one of the following components could prevent your air conditioner from blowing:
- Damaged dials
- Damaged switches
- Damaged fuses
- Damaged hoses
While most of these are not difficult to replace, assuming you have the parts, they are not the easiest to locate and diagnose.
Toyota Camry AC Not Blowing Hard
An easy-to-check cause of your AC’s weak airflow could be your cabin air filter. This filter processes contaminants out of the air surrounding your vehicle to ensure it is safe for your cabin. If this air filter becomes clogged, then it limits the amount of air that can be directed for air conditioning. It is unlikely that the entire filter is clogged, but a dirty filter will limit the amount of available air and weaken your AC system.
As stated before, this could also be a problem with your motor blower. Overheating of specific resistors can cause your system to get locked out of certain speeds.
Toyota Camry AC Not Blowing Cold Air
There are few things worse than sitting in a warm car and getting blasted by a torrent of even warmer air. Normally, you tough it out and after a minute or two, the air becomes cool and refreshing. However, that is not the case this time. No matter how long you sit, the air remains unpleasantly warm.
The most common reason for this problem is that your AC system has run out of its refrigerant. This may sound as easy to fix as changing your oil or wiper fluid, refrigerant (freon) is dangerous to handle yourself. It is a hazard for your health and the environment, and its handling should be left to professional hands.
Toyota Camry AC Drain Hose Location
The AC drain hose plays an important role, not only in your car’s cooling system but in the overall upkeep of your vehicle. Its purpose is to expel the liquid produced when your air conditioner uses freon for cooling.
In many Camrys, the AC drain hose can be found from the firewall on the passenger’s side of the car. If you discover a leak in this area, your drainage hose has likely become blocked by mold or some other obstacle.
Toyota Camry AC Compressor
Most of the other parts of your AC system mentioned so far are responsible for maintenance or airflow. However, the air compressor is the all-important linchpin that cools the air. Without it, you would be forever at the mercy of the indecisive temperatures of nature.
Below are a few things to keep in mind when you suspect your compressor is the cause of your faulty air conditioner.
Toyota Camry AC Compressor Oil
Unlike engine oil, AC compressor oil’s main purpose is to lubricate the many moving parts of the compressor. Choosing the correct type and amount of oil is vital to ensuring your compressor a long and efficient life.
Historically, Camrys have used Polyalkylene Glycol (PAG) synthetic oils for their AC compressors. These oils have a high viscosity index, ranging between 180 and 280, and deal well with changing temperatures. Some garages prefer using universal oil, so next time your compressor is worked on, confirm that they are using a PAG variation.
Toyota Camry AC Compressor Noise
Noise coming from your AC compressor is not necessarily a bad thing. This may just be the typical warmup process, or the evaporator being engaged. However, if the sounds are persistent or exceptionally loud, then it is best to get your compressor checked as soon as possible.
Many parts of the AC compressor use a bearing to turn during its operations. If any of those bearings break or fail, then you will have an alarm of clinking metal going off in your car. Because the compressor is comprised of so many parts, it is liable to make any number of noises over its lifetime.
Some problematic noises include:
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- An increased knocking or banging
- Consistent hissing or whistling
- Belt squealing
These are not the only noises to be aware of. You know what sounds your car usually makes and what sounds are abnormal.
Toyota Camry AC Compressor Clutch
A frequent source of noise from your AC compressor comes from the clutch. Think of the clutch as the power cord of the AC compressor. Because it is so often engaged, it is a part that is susceptible to wearing down quickly and should be one of the first things you check when noise occurs.
There are multiple signs of a damaged clutch such as:
- Scraping noises when attempting to turn on the AC
- Airflow is consistently warm instead of cool
- The dial or switch won’t turn on the AC
Depending on the model of your Camry, it is possible to replace a faulty clutch without replacing the entire AC compressor.
Toyota Camry AC Compressor Sensor
Vital parts require fallback measures to keep them operating within safe parameters. For the compressor, the sensors that monitor its pressure levels act as the safety feature.
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Overly high or low pressures can result in damaging and expensive effects on your AC compressor. The compressor sensor works as an automatic kill switch that deactivates the compressor in case pressure exceeds or falls below acceptable levels.
Signs of a failing compressor sensor are random activations and deactivations of your air conditioning, inconsistent air temperatures, or the AC not turning on in the first place. If you suspect your compressor sensor is beginning to falter, it is imperative to act immediately to keep you and your vehicle safe.
Toyota Camry AC Compressor Relay
Most vehicular functions are powered through electrical relays. The AC compressor relay delivers power to the clutch, and by extension, the entirety of your compressor.
Like all other relays, the AC compressor relay has a chance to burn out and will require replacement if you want your air conditioning to function. While most last for roughly 50,000 cycles (10 years), this time can be shortened by corrosion or micro-debris.
All you need to replace relays yourself are:
- Safety goggles
Otherwise, it is a straightforward process.
KnowMyAuto is the sole owner of this article was published on Jun 10, 2021 and last updated on .