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2001 Lexus RX 300 Base 4dr SUV

2001 Lexus RX 300
Trim Info:
Front Wheel Drive, 4 Door SUV, Mid-Size Station Wgn
19 mpg city / 23 mpg hwy
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March 28, 2013, 2:17 am

Kunle A

Question: Can an ECM Or ECU Module (brainbox) that malfunctions affect the Performance of My Airconditioner?

2001 Lexus RX 300 4WD 3.0L EFI

April 1, 2013, 11:16 am

Ron W
Expert Mechanic

Possibly. (but not very common) the ECM can turn off the AC system if it needs to to keep the engine running. Depending on what issue you are having with the AC system, will depend on what is the cause.

I would have the AC system diagnosed before replacing anything as it may be as simple as a low refrigerant charge, or stuck blend door that is the root cause.

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