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Another Dreaded Blinking AC Light

Discussion in '2nd Gen. Tacomas (2005-2015)' started by Crow Horse, Jul 9, 2020.

  1. Jul 9, 2020 at 2:35 PM
    #1
    Crow Horse

    Crow Horse [OP] Well-Known Member

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    I've been reading about this issue but honestly I don't know shit from shineola about it.

    Here's what happened. Hottest day of the year so far. Started truck and 5 minutes later hopped back in. Noticed that it wasn't as cold as it normally is but dismissed it because of the outside temps. During my drive on the highway I heard a medium pitched "moan" which I thought was the blower motor so I shut off the fan. Noticed the AC light blinking. Now it's getting friekin' hot and had to resort to dual 55's. I tried the fan several times with the same result. Later on my return trip I tried several more times. No "moan" and the blower worked but no cold air. I know of the several prime suspects - relay, rpm sensor, amplifier, and compressor. There are other things it might be but being that I'm clueless in this arena I need some guidance. If it's just a sensor I'll swap it out but beyond that I'll have Toyota do a compressor replacement if needed.

    In the mean time, I'll keep searching and reading.
     
    Last edited: Jul 13, 2020
  2. Jul 9, 2020 at 2:38 PM
    #2
    JaCado

    JaCado I make bad choices

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    This was first to pop up on a search
    Flashing A/C light is 'indicative' of AC compressor 'clutch relay' failure .. Intermittent failures are common... Relay located in the under hood fuse/relay box... Owners manual helpful for identification.
     
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  3. Jul 9, 2020 at 2:43 PM
    #3
    Crow Horse

    Crow Horse [OP] Well-Known Member

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    Thanks, I'll check it out.

    I grabbed hold of the clutch and spun it but it felt "rough" and "notchey" (is that a word)?
     
  4. Jul 9, 2020 at 2:45 PM
    #4
    TnShooter

    TnShooter Well-Known Member

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  5. Jul 9, 2020 at 2:50 PM
    #5
    Crow Horse

    Crow Horse [OP] Well-Known Member

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    Thanks, I've been reading that. At this point I'm leaning towards the clutch failed which might make sense because of the sounds I heard. However, the jury is still out....
     
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  6. Jul 9, 2020 at 3:38 PM
    #6
    Crow Horse

    Crow Horse [OP] Well-Known Member

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    The jury might be in. I just checked the AC clutch on our 2015 and it spins fairly smoothly. The 2012 has the immediate issue so I'm guessing the bearing has failed.
     
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  7. Jul 9, 2020 at 3:41 PM
    #7
    TacomaUSA

    TacomaUSA Cross Country Tacoma

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    Compressor clutch, sorry OP. Been there, done that.
     
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  8. Jul 9, 2020 at 3:52 PM
    #8
    Crow Horse

    Crow Horse [OP] Well-Known Member

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    If it is the clutch, can I drive without doing any further damage?
     
  9. Jul 9, 2020 at 3:56 PM
    #9
    12TRDTacoma

    12TRDTacoma Powered by Ford, GM, VW, and Mercedes

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    Replace the compressor assembly Denso 497-9196.

    Don't drive it while you have the bearing issue.. as you can lose the pulley and as a result your serpentine belt in the process and damage something else potentially.
     
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  10. Jul 9, 2020 at 4:15 PM
    #10
    TacomaUSA

    TacomaUSA Cross Country Tacoma

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    I drove mine for 2 years with no problems...other than sweat. However, I was sure the clutch was the culprit and would not engage.

    As another member pointed out, you could have a bearing issue which is different.

    Your best bet is to get it diagnosed properly and go from there. Don't want to see you have any more problems.
     
  11. Jul 9, 2020 at 4:16 PM
    #11
    Jeffch

    Jeffch Well-Known Member

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    Have someone engage ac or defrost while you watch. The mag clutch sucks itself against the rubber donut spinning the compressor.
    The whole thing can be disabled by pulling the relay.

    Or for mine a belt is available for a non ac model.
     
  12. Jul 9, 2020 at 4:26 PM
    #12
    Clearwater Bill

    Clearwater Bill Sometimes when I close my eyes, I can't see.

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  13. Jul 10, 2020 at 1:56 PM
    #13
    Crow Horse

    Crow Horse [OP] Well-Known Member

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    I pulled it apart today and this is what I found. I'm a bit surprised that it wasn't worse than it is. Now I'm dead in the water waiting on parts. I checked with Toyota and it's nationally back ordered with no ETA. 274 have been shipped from Japan but the whereabouts is unknown. With that in mind, I reluctantly had to order a generic brand so I can get back on the road and that will probably take a week to get here.....IMG_3967.jpg IMG_3968.jpg
     
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  14. Jul 10, 2020 at 2:00 PM
    #14
    CurtB

    CurtB Old Timer knowitall

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    That clutch got HOT.
     
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  15. Jul 10, 2020 at 4:50 PM
    #15
    Dennisi01

    Dennisi01 Well-Known Member

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    I had this problem and bought a replacement clutch on ebay, did the fix and the ac worked perfectly ever since, 2 years ago far.
     
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  16. Jul 13, 2020 at 6:16 AM
    #16
    Crow Horse

    Crow Horse [OP] Well-Known Member

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    Still waiting on the clutch but I started looking into fabbing a tool to hold the hub while I torqued the bolt. It's not a big issue and I didn't have to do anything. It looks like a sink drain wrench will hold the hub while torquing the bolt. Being that the torque value is so low this should work. Haven't tried it yet....IMG_3970.jpg work well.
     
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  17. Jul 13, 2020 at 10:51 AM
    #17
    Crow Horse

    Crow Horse [OP] Well-Known Member

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    A strap wrench might even work a bit better.....IMG_3971.jpg
     
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  18. Jul 14, 2020 at 3:34 PM
    #18
    Crow Horse

    Crow Horse [OP] Well-Known Member

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    Received the clutch hub today and replaced it. I only replaced the hub. The A/C works and no unusual moans and groans, just the usual (mine). Did everything from underneath after removing the skid plate. I had previously removed the front wheel and dropped the inner fender liner for additional access if needed but didn't have to go that route.

    Side bar - I used my HF converted PE jack and it worked flawlessly. I also used a HF car dolly to lift the tire back onto the hub without any difficulty. I love it when a plan comes together...
     
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  19. Jul 14, 2020 at 3:45 PM
    #19
    TnShooter

    TnShooter Well-Known Member

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    Great news. What method did you use to hold the hub while reinstalling the bolt?
     
  20. Jul 14, 2020 at 4:13 PM
    #20
    Crow Horse

    Crow Horse [OP] Well-Known Member

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    I used the strap wrench. It worked a charm....
     

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