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4Lo just flashes and beeps

Discussion in '2nd Gen Tundras (2007-2013)' started by jaybo1991, Mar 11, 2018.

  1. Mar 11, 2018 at 9:47 AM
    #1
    jaybo1991

    jaybo1991 [OP] New Member

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    I can not get my truck to go into 4Lo i have tried everything. Truck works perfect shifting in and out of 4hi but will not go in 4LO at all. I have no lights o or anything just the 4lo flashing. Any ideas or fixes?
     
  2. Mar 11, 2018 at 9:54 AM
    #2
    15whtrd

    15whtrd Mr. Blonde

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    What procedure are you using to put it in 4Lo?
     
    T-Rex266 likes this.
  3. Mar 11, 2018 at 10:05 AM
    #3
    jaybo1991

    jaybo1991 [OP] New Member

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    put it in neutral and then go into 4hi let it engage and pull foward some. Then back to neutral and select 4lo then i have tried to let it roll back tried to pull foward and trie reversing but it will not go in.
     
  4. Mar 11, 2018 at 8:56 PM
    #4
    Troynjade

    Troynjade Beast mode

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    Mine does that alot, not sure why either..I put it in neutral as well when I switch in to 4 lo or Hi, sometimes I don't hear it engage.
     
  5. Mar 11, 2018 at 9:06 PM
    #5
    831Tun

    831Tun crazy Bastrd

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    Sounds like you're doing it right.
     
    15whtrd likes this.
  6. Apr 25, 2018 at 11:38 PM
    #6
    JBSTOY

    JBSTOY Was tired, so I woke up.

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    Yeah my truck does the same thing. Sometimes I can be getting gas and go to start the vehicle and the light flashes and beeps and every gear of the tranny is neutral. I had to crawl underneath and hit the actuator with a rubber mallet. I even had all of the contacts cleaned. Worked well for a couple of months. Now it’s pulling the same crap again. Any other ideas? If the actuator will fix it, I’ll spend the 200 dollars. Thanks. Don’t mean to hijack your thread.
     
  7. Apr 26, 2018 at 12:38 AM
    #7
    l3LUEFALCON

    l3LUEFALCON RIG MECHANIC

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    From Park, shift to Drive, Then select 4H (while moving), 4H should now engage w/o having to shift to neutral (While still moving @ slow pace) try to select 4L, (4L should be flashing at this time w/o engaging 4L) *NOTE: Some Models will only allow you to select 4L while in Neutral... IDK why*. To complete process (While 4L is flashing) press brakes and then shift to Neutral, let off brakes. You should now engage 4L. Maybe this helps.... or maybe not.
     
  8. Apr 26, 2018 at 12:47 AM
    #8
    JBSTOY

    JBSTOY Was tired, so I woke up.

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    Mine will beep and flash upon startup even though the selector is in two wheel drive. It has some kind of glitch. I don’t know if it is the actuator the rod behind the actuator. I was reading that one guy had to replace his transmission which made no sense to me at all. He never reported back though as to whether that fixed his problem or not. The third gen went with a different transfer case. Thanks though.
     
  9. Apr 26, 2018 at 12:47 AM
    #9
    Spvrtan

    Spvrtan Mod In Training | MIT

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    You don't have to be in neutral to switch from 2WD to 4-high; you can be moving up to about 25mph and engage/disengage it anytime.
     
  10. Apr 26, 2018 at 12:48 AM
    #10
    JBSTOY

    JBSTOY Was tired, so I woke up.

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    I know this. This is not the issue for my circumstances.
     
  11. Apr 26, 2018 at 12:50 AM
    #11
    Spvrtan

    Spvrtan Mod In Training | MIT

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    Only mentioned it because maybe if you're dropping into N before 4-high then maybe that's what's causing the issue for some odd reason.
     
  12. Apr 26, 2018 at 12:55 AM
    #12
    l3LUEFALCON

    l3LUEFALCON RIG MECHANIC

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    Did you know if someone put the wrong fluid in the transfer case. People have put the same fluid that goes into the differentials into the transfer case.... this could cause the problem you're having. The correct fluid is 75W and some put 75W-90 in the transfer case.

    See this thread:

    https://www.tundras.com/threads/15-...nge-and-drain-plug-gaskets.17221/#post-576719
     
  13. Apr 26, 2018 at 12:57 AM
    #13
    l3LUEFALCON

    l3LUEFALCON RIG MECHANIC

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    IDK if this will apply to you since you have a 2008.
     
  14. Apr 26, 2018 at 1:04 AM
    #14
    l3LUEFALCON

    l3LUEFALCON RIG MECHANIC

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    @JBSTOY

    Here are your specs. I believe this is your truck you have listed:


    upload_2018-4-26_3-3-44.jpg
     
  15. Apr 26, 2018 at 1:06 AM
    #15
    l3LUEFALCON

    l3LUEFALCON RIG MECHANIC

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    @JBSTOY
    Looks like the diff and the transfer use the same on a 2008..... Maybe trying a synthetic type fluid will help?

    Untitled.jpg
     
    Last edited: Apr 26, 2018
  16. Apr 26, 2018 at 12:23 PM
    #16
    JBSTOY

    JBSTOY Was tired, so I woke up.

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    Thanks. Ill have to check into that.
     
  17. Apr 26, 2018 at 12:25 PM
    #17
    JBSTOY

    JBSTOY Was tired, so I woke up.

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    I understand what you’re saying. It usually does it at startup when the transfer case isn’t even being changed at all with the selector in two wheel drive and park.
     
  18. Apr 26, 2018 at 1:01 PM
    #18
    Cement Pro

    Cement Pro New Member

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    If you think the Tundra is tough getting in 4LO you certainly don’t want to try Engaging the locker on a Toyota Tacoma Off-Road. On a more serious note just plan on taking your time. I generally put it in 4 high really easy then pop it in neutral and switch to 4 LO. Be patient and wait on it. Sometimes I have to go forwards or back a little bit.
     
  19. Apr 26, 2018 at 4:47 PM
    #19
    JBSTOY

    JBSTOY Was tired, so I woke up.

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    Gotcha. My issue is not putting the truck into 4 lo. The truck tries to put itself in 4 lo even though it hasn’t been selected.
     
  20. May 9, 2018 at 12:54 AM
    #20
    l3LUEFALCON

    l3LUEFALCON RIG MECHANIC

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  21. May 9, 2018 at 4:04 PM
    #21
    JBSTOY

    JBSTOY Was tired, so I woke up.

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    Thanks I’ll check it out. I think that I might have it figured out. It only does it if I am really driving the truck hard. Then the next startup cycle is when it exhibits the issue.
     
  22. Nov 8, 2019 at 10:45 AM
    #22
    Jbtaco2002

    Jbtaco2002 Almost a Tundra

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    resurrecting an old thread here but i am having your symptoms on my '08 Sequoia. 4hi no issues going in and out, can hardly ever get it into 4lo, just flashing 4lo light, and also i have the 4lo flashing when i start up in the mornings, in 2wd and also have had it happen when left in 4wd overnight.

    did you get it fixed?

    thanks

    John
     
  23. Nov 8, 2019 at 10:48 AM
    #23
    831Tun

    831Tun crazy Bastrd

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    Assuming you're in neutral when you shift into 4lo and waiting 3 seconds for it to engage, It might be the actuator?
     
  24. Nov 8, 2019 at 10:53 AM
    #24
    Jbtaco2002

    Jbtaco2002 Almost a Tundra

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    correct, i hear it "try" to do something but it's like it gets cut short. on the rare occasions 4lo does engage, you can hear the actuator motor cycling through which takes a second or 2. otherwise its just a 'click'.

    doing as much research as possible before tearing into it. reading plenty of struggles about clocking the gears upon reassembly...
     
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  25. Nov 8, 2019 at 11:10 AM
    #25
    831Tun

    831Tun crazy Bastrd

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    At least there are a lot of dismantlers in your area so you hopefully have quick and easy access to replacement part.
     

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