a/c light blinking help

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Oct 16, 2009 | 05:36 PM

divs

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Driver School Candidate

Joined: Dec 2006

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From: fl

a/c light blinking help

hey guys wassup!! when i was driving my 2004 rx330 today the a/c light was blinking and the a/c was not cooling..can someone help? thanks you

Oct 16, 2009 | 08:00 PM

jfelbab

Moderator

Joined: Dec 2003

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From: FL

Have your refrigerant level checked for starters.

Oct 17, 2009 | 07:39 AM

lexus114

Lexus Champion

Joined: Aug 2007

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From: Bethlehem Twsp. Pennsylvania

by any chance,did you drive in heavy rain?

Oct 17, 2009 | 09:05 AM

RXSF

CL Community Team

Joined: Aug 2006

Posts: 12,481

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From: San Francisco, CA

if you drove through a puddle, water may have entered the engine compartment where the belt is. It shuts down the AC as a precaution. usually restarting the car/turning off and on the AC again resets it.

Oct 19, 2009 | 09:57 AM

Ron.lexus

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Joined: Oct 2009

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From: ca

Why dont u take your car to a mechanic. I think its not a big issue.

Jan 11, 2010 | 02:18 PM

boyboy9191

Driver School Candidate

Joined: Jan 2010

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From: NY

RXSF:

Is there any solution to stop the AC switching off when driving through a puddle?

Jan 11, 2010 | 02:56 PM

RJLEXUS96

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Joined: Dec 2009

Posts: 16

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From: FL

A/c light flashing

Most likely the magnetic clutch relay failed. Ive done plenty of those on the older RX. Parts are around $70 and labor is $55. If the drive belts get wet the the car will shut down the a/c and you will see the light flash. All lexus cars have that.

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Jan 11, 2010 | 03:26 PM

RXSF

CL Community Team

Joined: Aug 2006

Posts: 12,481

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From: San Francisco, CA

it is just a safety machanism. No big problem here. Just switch it back on after it switches off.

Jan 11, 2010 | 09:06 PM

#10

mmlex1987

Intermediate

Joined: Nov 2009

Posts: 409

Likes: 0

From: WI

Wow,
I had no idea the described situation was a safety measure. I guess i just learned something new...

Jan 11, 2010 | 10:02 PM

#11

salimshah

CL Community Team

Joined: Apr 2001

Posts: 16,533

Likes: 1,379

From: Austin, TX

Yep, safety of compressor and your pocket book.

Bonus points for who ever finds the reason behind it.

Salim

Jan 13, 2010 | 04:58 AM

#12

RJLEXUS96

Driver School Candidate

Joined: Dec 2009

Posts: 16

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From: FL

A/c light flashing

The reason behind it is if the drive belts get wet and start to slip, there are sensors on the pully that read this and shut off the compressor. If the belts happen to slip off, the the compressor locks up and the must be towed. Lexus
does this to prevent that from happening. Every Lexus car has this feature.
Also, if this a/c lights flashes when it is dry out then your Magnetic clutch relay is failing. It is a repair that costs under $200.