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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.

This guide provides instructions on how to recharge the A/C system on an ACURA yourself.

Table of Contents


What you will need


  1. Park the ACURA in a safe area. Turn off the engine. Engage Parking Brakes. 
  2. Open the hood of your car. The hood release is located under the dashboard on the driver's side.
  3. 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.acuar ac charge instruction ac port tlxacura ac charge port TL
  4. The line for the low-pressure side has a larger diameter than the high-pressure line.  Remove the cap from the low-pressure ac recharge mamo allyr
  5. Connect your A/C hose to the charging port. ACURA model ac recharge diy video allmo allyr
  6. Start the engine and let it idle. how to charge the ac on ACURA model
  7. 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. 
  8. 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. 
  9. This process can take several minutes. When the a/c system is low on freon, the compressor may not be engaged.
  10. 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