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2017 RDX AC Not Cooling Properly, Blowing Warm Air

0

Mike T. · rep 0 · May 26, 3:32 AM · 1 replies · solved · Question

Vehicle: 2017 Acura RDX Base

Hi all,

I'm having trouble with the air conditioning in my 2017 Acura RDX Base model. For the past few weeks, the AC hasn't been blowing cold air consistently. Sometimes it'll start cool, but then quickly turn warm, even on the coldest setting.

It's getting pretty hot here, and driving without proper AC is miserable. I haven't heard any strange noises like grinding or squealing from the engine bay when the AC is on, just warm air. The fan seems to be working fine, just no cold air.

Has anyone else experienced this with their 2017 RDX? What was the cause, and what should I check before taking it in for service?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 26, 3:32 AM

0

ClearTheCode admin answer:

An AC system blowing warm air in your 2017 Acura RDX is a common problem with several potential causes. Diagnosing it systematically can help pinpoint the issue.

  1. Check Refrigerant (Freon) Level: The most frequent cause of an AC not cooling is a low refrigerant charge, usually due to a small 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 problems.
  2. Inspect the Condenser: The condenser, located in front of the radiator, dissipates heat from the refrigerant. If it's blocked by debris (leaves, bugs) or damaged (bent fins), it won't be able to cool the refrigerant effectively. Ensure it's clean and free of obstructions.
  3. Check the Compressor Clutch: When you turn on the AC, listen for a distinct 'click' as the compressor clutch engages. If you don't hear it, or if it cycles on and off rapidly, it could indicate a low refrigerant level, a faulty clutch, or an electrical issue preventing the compressor from engaging.
  4. Replace Cabin Air Filter: While less likely to cause warm air, a severely clogged cabin air filter can restrict airflow, making the AC feel less effective. It's a good maintenance item to check anyway.
  5. Look for Leaks: Check for any oily residue around AC lines, fittings, or the compressor, which can indicate a refrigerant leak.

Common Causes:

  • Low refrigerant due to a leak.
  • Faulty AC compressor or clutch.
  • Clogged or damaged condenser.
  • Malfunctioning expansion valve or orifice tube.
  • Electrical issues with AC components.

When to See a Shop: If you've checked the basics and the AC is still blowing warm, it's time to visit an automotive AC specialist or your Acura dealer. They have specialized equipment to:

  • Accurately measure refrigerant pressure.
  • Perform a leak detection test (e.g., using UV dye).
  • Diagnose compressor, clutch, or other component failures.
  • Check for any diagnostic trouble codes (DTCs) related to the climate control system, though direct OBD-II codes for AC performance are rare unless there's an electrical fault.
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