AC light Blinking and AC not working..........

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Apr 15, 2016 | 02:59 PM

#106

geddymd72

Driver School Candidate

Joined: Dec 2009

Posts: 18

Likes: 0

From: WI

Quick check and easy fix

Blinking AC light? Swap the horn relay with the AC clutch relay to identify the culprit. Then try banging the old relay a few times with a screwdriver head. When you reinstall it, it may start to work again as it did for me.

This video shows what to do:
https://youtu.be/b-oETQXoe0g

Jun 30, 2016 | 06:20 PM

#107

redwayhorn

Driver School Candidate

Joined: Jun 2016

Posts: 1

Likes: 0

From: TX

June, 2016 Update Blinking A/C Light

The A/C light started blinking on our 2003 Lexus ES300. Car has 75K miles on it. Today (6-30-16) we purchased a Magnetic Clutch Relay replacement part from our local AutoZone. Took the original Toyota/Lexus part with us (as mentioned, it's located in Fuse Box under hood - ours is white). Just wanted to be sure AutoZone sold us right part. The part purchased has a lifetime warranty and the mfg./part # for the relay is Duralast 20382. Cost was $16.99 + $1.40 tax for a total of $18.39. A/C is ice cold, runs perfectly, and no more blinking light! Highly recommend you try this method first before having any expensive A/C repairs. DO NOT buy the part from a dealer - it's way more expensive. Good luck!

Last edited by redwayhorn; Jun 30, 2016 at 06:23 PM.

Jun 2, 2017 | 10:24 AM

#108

Simc

Driver School Candidate

Joined: May 2017

Posts: 12

Likes: 0

From: New York

$18.31 AC fix!!!

I think you were the first to mention this fix
So I have to give you huge kudos!!!!

$18.31 shipped from amazon

thank you!!!

Quote:

Originally Posted by kashi125

Check the part number on your Magnetic Clutch Relay in the fuse box under the hood. If it has part number "90987-02022" printed on the side of it, replace it with a new relay part number "90987-02028".
This is a common problem with 02-04 ES300 and a lot of Camry, 4Runners etc and there is a Technical Service Bulletin out for it.

New relay is ~$50 online or $75 from a Toyota dealer.

Aug 10, 2019 | 04:41 PM

#109

kensis

Driver School Candidate

Joined: Aug 2019

Posts: 1

Likes: 0

From: or

ac not working

read the threads about relay problems my problem is similar except my compressor runs for 5 seconds then off light starts blinking i changed relay no deference new compressor and Freon levels good took to dealer they said i needed new compressor old one was not pumping replaced it new one is pumping now high side is around 150 low side drops when compressor runs but only about 5 seconds turn it off then back on runs 5 seconds light blinks then off read the codes 21 and 24 but i am inside shop does anyone have an idea thanks need help 2006 is 350

Last edited by kensis; Aug 10, 2019 at 06:51 PM.

May 26, 2020 | 07:24 PM

#110

Emmydon

Driver School Candidate

Joined: May 2020

Posts: 3

Likes: 0

From: Ebonyi

Quote:

Originally Posted by llcoolpass

well duh you have a different problem than this person, so why buy a relay you don't need [thought it wouldn't hurt IF your car was covered on the aforementioned TSB] LOL

I guess the AC system has blockage maybe from valve or discharge hose is bad

Last edited by Emmydon; May 26, 2020 at 07:28 PM.

Jun 28, 2021 | 10:39 AM

#111

volvodude

Driver

Joined: May 2015

Posts: 68

Likes: 3

From: Oregon

AC Light NOT Blinking - relay?

Hi,

I press the AC button and nothing happens, I don't hear the clutch engage. But the AC Light doesn't blink. It just stays solid green. Can this still be a relay issue? If not what else could this indicate?

I have a 1998 ES300.

Thank you!

Last edited by volvodude; Jun 28, 2021 at 10:46 AM.

Jun 24, 2022 | 03:01 PM

#112

arif03es30

2nd gear

Joined: Jun 2022

Posts: 2

Likes: 0

From: NE

he light does not blink but it blows hot air :(

Quote:

Originally Posted by JSM1284

A/C - Inoperative/A/C Light Flashing

ELECTRICAL
EL009-05

June 3, 2005

Title:
A/C LIGHT FLASHING - MAGNETIC CLUTCH RELAY

Models:
'02 - '04 ES 300 & ES 330, '03 - '04 GX 470

Introduction

This bulletin is to provide information regarding countermeasures to the A/C magnetic clutch relay for A/C light flashing (inoperative A/C) issues on some vehicles equipped with a magnetic clutch compressor.

Applicable^ 2002 - 2004 model year ES 300 and ES 330 vehicles.
^ 2003 - 2004 model year GX 470 vehicles.

Parts Information

Inspection procedure

1. Locate the A/C magnetic clutch relay.

2. Verify the part number printed on the side of the relay.

A. If the part number is 90987-02022, please replace the relay with the countermeasured relay P/N 90987-02028.

B. If the part number does not match 90987-02022, then please diagnose problems by referring to the Technical Information System (TIS): applicable model year and vehicle Repair Manual: Air Conditioning: Troubleshooting.

NOTE: Relays other than P/N 90987-02028 should not be used for this application.

Warranty Information

Applicable Warranty:

This repair is covered under the Lexus Comprehensive Warranty. This warranty is in effect for 48 months or 50,000 miles, whichever occurs first, from the vehicle's in-service date.

* Warranty application is limited to correction of a problem based upon a customer's specific complaint.

Hi I replaced the relay following everything. Now the light stopped blinking but now it blows hot air all the time. Before it used to blow cold air for a few minutes. Is there any DIY fix or should I take it to professionals? and what could be the possible reason for this? Thank you very much.