The largest online repair guide library for every car

About us
Contact support
FAQ
Sign up
Sign in

2020 Eclipse Cross AC blowing warm air, not cooling

0

Rachel A. · rep 0 · May 22, 5:37 AM · 1 replies · solved · Question

Vehicle: 2020 Mitsubishi Eclipse Cross SE

My 2020 Mitsubishi Eclipse Cross SE's air conditioning isn't blowing cold air anymore. It just started happening this week, and it's getting hot out! The fan works perfectly fine, but no matter what setting I put it on, it's just warm air coming out of the vents, even on max AC.

I checked the cabin air filter, and it looks pretty clean, so I don't think that's the issue. Are there any common problems with the AC system on these models? What should I be looking at before taking it to a shop?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 5:37 AM

0

ClearTheCode admin answer:

  1. Check Refrigerant Level: The most common reason for an AC system to blow warm air is low refrigerant (Freon). This can be due to a slow leak in the system. While DIY recharge kits are available, it's best to have a professional check for leaks and properly recharge the system, as overcharging can also cause issues.
  2. Inspect the Condenser: The AC condenser, usually located in front of the radiator, can get clogged with debris (leaves, bugs) or damaged by road hazards. A blocked condenser can't dissipate heat effectively, leading to warm air. Visually inspect it for damage or blockage.
  3. Compressor Function: The AC compressor is the heart of the system. When the AC is turned on, you should hear a click and see the clutch on the compressor engage. If it's not engaging, it could be a faulty compressor, a bad clutch, or an electrical issue (like a blown fuse or relay).
  4. Blend Door Actuator: Inside your dashboard, a blend door actuator controls the mix of hot and cold air. If this actuator fails, it might be stuck on the 'heat' setting, regardless of your AC controls. This often presents as a clicking noise from behind the dash.
  5. When to See a Shop: If you've checked the basics and the issue persists, it's time to visit a qualified automotive AC technician. They have specialized equipment to accurately diagnose leaks, check system pressures, and identify component failures (compressor, expansion valve, evaporator). Ignoring AC issues can lead to more expensive repairs down the line, especially if a small leak turns into a major component failure.
Menu

Help & account