acura engine cover

Acura A/C Air Conditioner Recharge Instructions

If the ACURA blows hot air when you set the air conditioner to COLD, there is a good chance the air conditioner (A/C) system is low on refrigerant. Learn how to recharge the A/C system on an ACURA yourself.

Before carrying out the procedure below to recharge Acura A/C, you must check the air conditioner information sticker under the hood to determine which type of refrigerant is used on your vehicle. R134a and R1234fy are different types of refrigerants and are not interchangeable.

What you will need

  • Air Conditioner Recharge Kit
  • Gloves
  • Protective Glasses


Park the ACURA in a safe area. Turn off the engine. Engage Parking Brakes.

Open the hood of your car. The hood release is located under the dashboard on the driver’s side.

Find the A/C info sticker under the hood and verify your Acura uses R134a or R1234fy refrigerant.

Locate the low-pressure port. This is where the A/C charging port is on an ACURA car. Note that there also is a high-pressure line. The A/C kit connector will not fit on the high-pressure line port. The Location of the A/C charging port on Acura TL is marked with an L.
Acura AC Charge Port on TLX
low pressure port on acura
Acura AC Charge Port on TLacura tl a/c charge port

The line for the low-pressure side has a larger diameter than the high-pressure line.  Remove the cap from the low-pressure port.remove ac port cap acura

Connect your A/C hose to the charging port.check ac pressure acura

Start the engine and let it idle. start and idle acura
Turn A/C on and set it to the lowest cold setting. Set the fan to blow at maximum speed. Once you do this, you can start adding refrigerant to your ACURA air conditioner system.

Rotate the dial on your gauge so that the arrow corresponds to the outside temperature. Keep the can in the upright position. Don’t tip the can to the side as this may introduce liquid refrigerant in the a/c system, which is not recommended and could lock up your a/c compressor. Keep the can upright and rotate it between 1 and 2 o’clock as you charge the a/c.

This process can take several minutes. The compressor may not be engaged when the a/c system is low on freon.

As you add refrigerant, you should see the compressor kick in. As you charge the system, stop pressing the trigger every couple of minutes to obtain a pressure reading.

Continue adding refrigerant until your gauge reaches the charged range. Do not allow the system to overcharge.

Using the method described here, you can also check the refrigerant pressure and if the system is fully charged.

These instructions apply to various Acura vehicles, including :

  • MDX
  • NSX
  • RDX
  • RL RLX
  • RSX
  • SLX
  • TL TLX
  • ZDX
  • CDX
  • CL
  • VSX
  • EL
  • ILX
  • Integra
  • Legend

We hope you find the Acura A/C Air Conditioner Recharge Instructions guide helpful. Check these troubleshooting and repair guides for more help on your Acura vehicle.


  • Rushit Hila • ASE Certified

    Rushit Hila, an ASE-certified engineer (G1 Automotive Maintenance and Repair), brings over two decades of hands-on experience in the automotive world to his writing. With a strong educational background, including a Master of Science in Engineering and a Bachelor of Science in Engineering, he has honed his skills and expertise through years of practical work. As a respected authority in the field, Mr. Hila is dedicated to offering insightful and valuable content that resonates with both vehicle owners and mechanics.

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One Comment

  1. Anonymous says:

    not bad, but the instructions on tilting the can are confusing and contradictory. Plus the video only repeats the text and is cut off at the end when some new info was being provided….