Hyundai Air Conditioner A/C Recharge Instructions

Vehicle:   Hyundai
Difficulty: ⚫⚫⚪⚪⚪
DIY Cost: $20-$35
Est. Time: 20 min

In this guide, you will find instructions on how to charge the air conditioner system on any Hyundai vehicle. 

If your Hyundai A/C has been blowing hot air not cold, there is a chance the system is low on refrigerant. A refrigerant leak can cause the system pressure to drop and the A/C compressor to turn off. This procedure will work only if your system has a very small refrigerant leak.

What you will need


  1. Park your Hyundai. Set the parking brakes, place the gear selector in Park and allow the engine to idle. how to rechage hyundai elantra a/c
  2. Turn the air conditioner ON. Set the climate control to the lowest temperature setting and blower on a/c blowing hot how to fix recharge with freon hyundai elantra
  3. Open the hood of your Hyundai. Locate the low-pressure air conditioner service port and remove the cap.
  4. Locate the air conditioner charging port or service port. In the Elantra, the A/C port is located behind the engine near the to recharge ac hyundai elantra diy
  5. If the connector from the A/C recharge kit doesn't fit on the port, you may be trying to connect to the high pressure port which is a different size than the low-pressure port. air condiotioner hyundai elantra how to chargeIf you are still having trouble locating the A/C charging port on your Hyundai this video explains it all.
  6. Next, connect the A/C charging kit.
  7. Add refrigerant to your air conditioner system. Once you connect the gauge, take a look at the gauge to read the pressure in your air conditioner system. If the pressure is low the gauge reading will be in the white zone. If the pressure is normal then the gauge should be in the green or blue area depending on the A/C kit that you are using. You should not have a reading on the HIGH / RED zone except when the car is turned off. 

  8. Keep the can UPRIGHT. As you charge the system shake the can every two or three seconds while you are charging.  Every few seconds release the trigger to stop the charging process. Take a look at the pressure gauge. (It is normal for the gauge to show overcharged with the engine turned off.) Don't overcharge the A/C system. Stop recharging the A/C system once you get the pressure within the acceptable range. Measurement should only be taken with the engine running.
  9. Disconnect the A/C recharge kit.  Detach the quick connect from the A/C port. Reinstall the cap. Don't overtighten the cap. Close the hood and enjoy your AC system. 

Keep in mind that a system that has a large leak may loose the refrigerant quickly and will require mechanic repair before being topped off with refrigerant.

This procedure is not recommended for A/C systems that completely empty.  On a completely empty A/C system, the air in the system must be extracted with a vacuum pump. Topping off Hyundai A/C system is very easy and can take between up to 20 minutes depending on the system capacity.


What type of refrigerant do Hyundai vehicles use?


Is A/C covered under Hyundai warranty?

Yes as long as the vehicle is under manufacturers warranty.


By YOUCANIC Automotive Experts
Apr 2020