Lexus air conditioning not working

Lexus air conditioning not working DEFAULT

Why Is My Car’s Air Conditioning Blowing Hot Air?

There’s nothing quite like cooling off by sitting in front of an air conditioning unit, especially when traveling in and around Bedford, Manchester, and Merrimack, NH, during those warmer months. Turning on your car’s A/C, expecting a refreshing burst of air, only to be met with hot air is an unsettling experience.

For those drivers asking, “Why is my car’s air conditioning blowing hot air”, we have the answer for you. At Ira Lexus of Manchester, we’ve created this A/C guide to help. Continue reading to learn more and don’t hesitate to contact us with questions. Skip ahead to schedule your automotive service online here!

Why Is My Car’s Air Conditioning Blowing Hot Air?

How Does an A/C System Work?

Many drivers assume your car’s air conditioning system works by creating and blowing cold air into the cabin. While this is somewhat true, the truth is a far more in-depth process.

In a nutshell, your car’s air conditioning works by cooling the air and removing moisture from it rather than creating new, cold air. This process includes refrigerant, a compressor, a condenser, and more.

With all these parts that go into cooling your cabin, there could be lots of different reasons your car is blowing hot air. Let’s check out three reasons why this may be happening.

Three Reasons Your Air Conditioning Is Blowing Hot Air

1). Refrigerant Is Leaking

Refrigerant is responsible for flowing through the compressor and the hoses, expanding and contracting as it removes heat and moisture from the air. This is often the cause for blowing hot air since the rest of the air conditioning system can’t properly function without enough refrigerant.

A leak can occur when the connecting hoses are punctured or the evaporator is rusted. Either way, the refrigerant can leak, causing the levels to drop and resulting in hot air when the A/C is turned on.

AC Service

2). Worn Condenser or Compressor

Both the condenser and the compressor play vital roles in cooling your cabin.

  • Compressor: A compressor is responsible for turning the refrigerant liquid into a gas, then pumping this gas through the air conditioning system.
  • Condenser: The role of the condenser is to pull the heat and moisture from your cabin, then allow the refrigerant to absorb this heat to cool the cabin.

Either the compressor or the condenser can wear over time, leaving hot air to flow through the cabin instead of cold air.

3).Issues With Electrical System

Another possible reason your car is blowing hot air is because of issues with your vehicle’s electrical system. Frayed wires and blown fuses are just some of the reasons your car may run into electrical issues.

How does this affect your air conditioning? When there’s an issue with the electrical system, it’s built into your car to shut down the system to prevent further damage.

What To Do if Your Car’s Blowing Hot Air?

Don’t let yourself sweat while traveling. At the first sign of hot air coming out of your air conditioning system, bring your vehicle to your trusted service center, like ours at Ira Lexus of Manchester. Here, our team of Lexus factory-trained and -certified technicians will quickly diagnose the cause for hot air, then take the necessary steps to resolve the situation.

With their help, you’ll be back to cruising in and around Bedford, Manchester, and Merrimack, New Hampshire, with cold air in no time. Don’t wait—schedule your service appointment with us today!


Nearest A/C Repair for Your Lexus RX

A/C Service for Lexus RX

There’s nothing worse than cranking your car air conditioner on a hot day — and discovering it’s broken. Your steering wheel feels like it's burning your hands. That puddle in the driver’s seat? Sweat. Ugh. You take a deep breath and ask yourself, “Who can fix my Lexus RX A/C?” Easy — Firestone Complete Auto Care! We know our way around Lexus vehicles, and our qualified technicians can diagnose and service the A/C system in your Lexus. Come to your local Firestone Complete Auto Care in your Lexus RX

In this A/C performance inspection, we’ll check out the current condition of your Lexus RX A/C system to determine whether repair work is needed. This check will include an examination of system pressure, a visual inspection, and a leak test. If any signs point to a possible leak, we’ll send a special U/V dye through the system, or use something called a “sniffer.” A "sniffer" is a machine that's run along parts of your Lexus RX A/C system that can detect refrigerant fumes escaping from the system. If your A/C system has a leak, we’ll find and repair it.

Recharge the A/C in Your RX

When we perform an A/C repair on your Lexus RX, we’ll also do an A/C evacuation and recharge. During this process, a technician will remove the old refrigerant from the A/C system. Then, they’ll use Lexus’s specifications to evacuate the system. The A/C system is recharged with new refrigerant and after one final test to be sure the system is cooling properly, you're ready to get back on the road. Our technicians know how to keep your A/C in tip-top shape with Lexus RX A/C recharges.

Troubleshooting Lexus RX A/C Problems

Warm air isn't the only Lexus RX A/C problem you may encounter. Typical A/C problems also include weak airflow, which could be caused by mold or mildew buildup, a loose hose, an old ventilation fan, or a compromised seal. If your A/C system blows cold air first but then it turns warm, this can mean there’s a malfunctioning compressor clutch, a leak, or a blown fuse. Are you breathing in some “interesting” new odors in your Lexus RX? You could have a moldy evaporator case, or you may simply need a new cabin air filter installed. Our trained technicians will do what they can to solve your A/C problems. Don’t sweat it — we’re here to help you chill out again in your RX

Frequently Asked Questions for Lexus RX A/C Systems

  • Can I make my RX air conditioner colder? Here are a few quick ideas. Shut the passenger air vents and point the other vents directly toward you. Park your car in the shade and use a window sun blocker. Then visit Firestone Complete Auto Care for an A/C performance check and recharge.

  • Why is my RX A/C blowing hot air? If your car’s air conditioning isn’t blowing cold air at all (or it tries, then turns warm), you could have a clogged expansion valve, a faulty compressor clutch, a leak, or a malfunctioning fuse in the system.

  • What causes A/C system leaks? To put it simply, age and moisture are some of the main causes of leaks in your A/C. Over time, rubber gaskets and seals can wear out, which pushes much-needed refrigerant out of your RX’s A/C system — and lets outside moisture get in, which can take a toll on internal A/C components.

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One of the most inconvenient vehicular problems is when the A/C won&#;t blow cold air.  If your Lexus IS isn&#;t keeping you cool, we&#;ve outlined some of the most common reasons why this might be happening.

The only thing that the air conditioning system has in common with the heater is that they both use the climate controls and the blower motor.  It is entirely possible for your IS &#;s heater to work just fine even when the air conditioner is not blowing cold at all.  That&#;s why troubleshooting the air conditioner is totally different than troubleshooting the heater.


Lexus IS Air Conditioning Not Blowing Cold Causes

Not Blowing Cold Air Lexus IS

  • Lack of Refrigerant&#;  Your IS &#;s air conditioner will not work if the refrigerant has disappeared due to a leak.  In fact, most won&#;t even cycle on without the right amount of refrigerant pressure.  This is far and away the most common reason that your IS &#;s air conditioner is not functioning.  It can be tempting to just get more coolant and get back on the road, but unless you find where the leak is coming from it&#;ll eventually happen again.
  • Bad Condenser&#;  If your condenser has taken damage or been clogged up, the coolant can&#;t transform the 
  • Clutch Cycling Switch&#;  A/C systems use an electromagnetic clutch to activate the compressor.  When this switch fails your air conditioning is dead in the water.
  • Blower Motor&#;  If there is no air blowing from your IS at all, the blower motor is at fault.  They are not that expensive and are easy to replace (most of the time).
  • Blend Door&#;  The blend door controls how much air conditioned and heated air enters the cabin.  If it gets jammed or locks up, your IS can&#;t respond to your temperature change request.

These are a few of the most common issues that could cause your IS to not blow cold enough.  There are other issues that can cause this as well.


Conclusion:  A/C Not Blowing Cold Lexus IS

Most of the time, when your IS &#;s air isn&#;t blowing cold enough, it is going to be a lack of refrigerant causing the problem.  We recommend having a professional recharge your A/C if it does end up being a coolant issue.  If you put too much coolant into the system, you can really do some damage.

If there is anything you would like to add, please leave a comment below.  Good luck!

Categories Lexus IS Sours:
2010 Lexus RX350 HVAC Problems - Not ac blend door actuator!

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Air conditioning not working lexus

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how to troubleshoot \u0026 fix lexus RX350 AC that blows warm

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