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2023 Air Suspension after TSB adjustments

Discussion in '3rd Gen Tundras (2022+)' started by zack191137, Jan 1, 2023.

  1. Jan 1, 2023 at 1:27 AM
    #1
    zack191137

    zack191137 [OP] New Member

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    I got the air suspension adjusted by the dealer per TSB. However, I do have questions:
    1. Is the truck came leveled before adjusted? What is the rear height after adjusting?
    2. How do you like the riding quality? I do feel it gets loose at low speed, but it can be me overthinking.
    3. Does everyone with air suspension have the problem? Especially for 2023. Anyone has the gap in spec(larger than 35mm)
     
  2. Jan 1, 2023 at 2:16 PM
    #2
    Lou1947

    Lou1947 New Member

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    I adjusted my air suspension and my rear height is about 38.5 inches (with truck height in neutral)from ground to rear wheel well lip. I don’t trust my dealer therefore I tackled the adjustment. My truck rides vey smooth and I don’t have any handling issues and no longer hitting the bump stops. Even though my 1794 has self leveling headlights I had to adjust them after the air suspension adjustment.
     
    Krusher22plat likes this.
  3. Jan 1, 2023 at 3:02 PM
    #3
    chastings1954

    chastings1954 New Member

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    How diffcult was this TSB to do? I think my new Capstone will need it as it seems to hit the bumpstops often. No local dealer help here.
     
  4. Jan 2, 2023 at 9:08 AM
    #4
    MJPlat

    MJPlat New Member

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    ryanwgregg likes this.
  5. Jan 3, 2023 at 8:12 PM
    #5
    Dugnor

    Dugnor New Member

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    Having mine done next week during my 5000 mile service.
    Right now my bump stop to axel is measuring at 17mm and feels a little harsh going over minor bumps on the highway. Can't wait to see if there is a difference.
     
  6. Jan 22, 2023 at 7:14 AM
    #6
    Carolina Peej

    Carolina Peej Hey can you hold the light for me real quick?

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    I have adjusted my air suspension sensor arms several times, trying to dial in the exact right setting (targeting between 40mm and 45m from bump stop to frame).

    One issue I continuously run into is about a 15mm difference from one side to the other. Does anyone know if the left and right air bags adjust independently? It seems like if I adjust the one side, both sides go up, and if I decrease the other side, both sides go down.
     
  7. Jan 22, 2023 at 8:41 AM
    #7
    Lou1947

    Lou1947 New Member

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    It took me several tries before getting both sides the same.I adjusted the arms so both rear heights are at 38.5 inches from ground to wheel well. I may mention that both of the adjustments are are not exactly at the same distance from the open slot.
     
  8. Jan 22, 2023 at 9:27 AM
    #8
    Carolina Peej

    Carolina Peej Hey can you hold the light for me real quick?

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    Thanks. Did you have to adjust and drive and continuously repeat the process, or did you dial them in while parked in one session? Also, did you adjust the arms while the vehicle was on, or did you shut off the engine, make adjustments, and restart the engine?

    Thanks for the help here, I've been adjusting the arms all day and can't get both sides even... Passenger side is stubbornly higher than drivers...
     
  9. Jan 22, 2023 at 10:52 AM
    #9
    Lou1947

    Lou1947 New Member

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    I did mine with the engine off. After the adjustment I cycled the suspension from normal to low then high and back to normal.
     
  10. Jan 23, 2023 at 11:29 AM
    #10
    zack191137

    zack191137 [OP] New Member

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    How did you get in to the difference? is it related to cycling the height? My dealer mentioned they are running into issue, but I never run into it when I did it myself.
     
  11. Jan 23, 2023 at 2:03 PM
    #11
    Lou1947

    Lou1947 New Member

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    What issues are they running into? I just loosened the nut and slid the arm up . On one side the arm had to be moved upwards more than the one on the opposite side to achieve the same rear height on each side. It took me about three tries on the one side to get the correct height to correspond with the opposite side.
     
  12. Jan 24, 2023 at 8:24 AM
    #12
    Carolina Peej

    Carolina Peej Hey can you hold the light for me real quick?

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    Just adjusting the arms with engine off, starting engine cycling the level (high, low, high, neutral) the measuring the distance between bump stops and axle. One side is always higher / lower than the other. Shut the engine off, make an adjustment to the arms, seems like both sides move up and down proportionately, even though I'm only adjusting one side. At some point, I run out of adjustment on one side and it seems like the truck stops responding to adjustments. So then I start all over again, drop both arms to the lowest setting, sit the truck down on the bump stops, shut the engine off, make what I think are the most accurate adjustments, start the truck, cycle the heights, and go back under and measure.

    It seems to me like you get one shot to adjust the arms, and the truck doesn't really respond correctly to minor adjustments to one side or the other.

    Currently sitting at about 50mm on drivers side and a little over 40 mm on passenger side...

    Measurements from the ground to the wheel well lip correspond to the 10mm delta, at around 37 3/4" and 38 3/8" on the other.

    That might just have to be close enough... But the Obsessive Compulsive in me is really struggling...
     
  13. Jan 24, 2023 at 8:32 AM
    #13
    Lou1947

    Lou1947 New Member

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    After adjusting drive the truck making right and left turns then drive it in a straight line and and let it come to a stop slowly. Now measure both sides . ( Make sure that the ground is perfectly level) .I adjusted mine by measuring the distance from the ground to the rear wheel arch, much easier than measuring the distance between axle and bump stop. Hope this helps.
     
    Carolina Peej likes this.
  14. Jan 24, 2023 at 9:18 PM
    #14
    zack191137

    zack191137 [OP] New Member

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    My dealer run into the exactly same issue. It didn't happen to me. All I did is set to H then back to N. There is ~ 1/8 difference at the beginning, but it seems goes away with driving.
     
  15. Jan 25, 2023 at 10:24 AM
    #15
    TRD Prologic

    TRD Prologic New Member

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    Hi, new member here. I've got a 23 Capstone that's having the same issue - found out about the TSB-0070-22 bulletin "adjustment" - took it to the dealer, and they "claim" they made the adjustment per the TSB and that the spacing between the bump stop and axle are within spec...35 +/- The problem still persists with the suspension bottoming out. I've showed these forums and comments to the dealer, but they obviously won't make an adjustment based on "user/customer" recommendations...it needs to come from Toyota, and they're concerned if I make the adjustment myself it could void any warranty if any issues arise 20k miles down the road, etc. Has anyone reached out to Toyota Customer Care to discuss the issue, or asked for an updated TSB# since the 2022 TSB # isn't fixing the issue? The dealer is just saying "sorry" and there's nothing else they can do until Toyota comes out with a new "official" adjustment, or recall. Paid $90k for the truck - it's got 600 miles on it and I don't even want to drive it anymore...it's bad. I plan to call Toyota - just curious if anyone else has tried, but hit a dead end?
     
    K1212 likes this.
  16. Jan 25, 2023 at 10:33 AM
    #16
    Breathing Borla

    Breathing Borla I'd rather be fishing

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    How did you pay 90k? That’s insane
     
  17. Jan 25, 2023 at 10:46 AM
    #17
    TRD Prologic

    TRD Prologic New Member

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    $80k msrp + $6k dealer markup + shipping..add taxes and it's over 90k I guess. But we all make bad decisions once in a while...
     
  18. Jan 25, 2023 at 11:22 AM
    #18
    Breathing Borla

    Breathing Borla I'd rather be fishing

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    holy moly, That's HD diesel 1 ton pricing, wow.

    Im sure they will fix it, but I would just raise the arms a touch, its not going to void your warranty, thats bullshit
     
  19. Jan 25, 2023 at 7:55 PM
    #19
    zack191137

    zack191137 [OP] New Member

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    Try a different a dealer if that's possible. My dealer has no issue to do it.

    35mm should give you a nice ride. My dealer raise it to ~43mm and I lower it back to 30~35mm as I felt the ride is loose after it.

    I also found to make L/R side height sensor match up helps a lot. Initially, the R side arm is half way from bottom, and L side is 1/8 way. That sets the wheel center to well bottom at 22inch, it bottoms out all the time. I lowered the R side to 1/4 and L stays 1/8, it raised to 22 3/8 inch. The ride is way better, like day and night. I am done with adjusting it even I probably can fine-tune I little.

    My bet is the AVS system take the ride height as one of the inputs to adjust suspension firmness and travel.
     
  20. Jan 25, 2023 at 9:31 PM
    #20
    Dugnor

    Dugnor New Member

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    Mine was at 17mm before I took it in for the TSB, going over minor bumps would set off the collision record on my dashcam. Now at 35mm and the difference is night and day, so much smoother.
     
  21. Feb 1, 2023 at 11:59 AM
    #21
    TRD Prologic

    TRD Prologic New Member

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    I've opened up a "case" with Toyota to see how they plan to address the issue. It seems like when the truck is in Park, the ride height is within spec (35-45), but it almost seems like when I start driving down the road, the suspension adjusts in the rear and drops down to where the bump stops hit constantly...hard to measure while driving though. There's a video on youtube where someone put a camera pointed right at the bump stop - showing it bottoming out constantly. I think that's my next move to see if that's what's happening back there while driving until Toyota gets back to me in a few days.
     
  22. Feb 1, 2023 at 12:47 PM
    #22
    eddiefromcali

    eddiefromcali New Member

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    Highly unlikely that the suspension is lowering itself once in drive
     
  23. Feb 1, 2023 at 12:55 PM
    #23
    chastings1954

    chastings1954 New Member

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    Need to do the adjustment on mine. How are you all setting the headlights? Tape on a wall?
     
  24. Feb 1, 2023 at 12:58 PM
    #24
    eddiefromcali

    eddiefromcali New Member

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    Didn't adjust mine, I don't get flashed so they must not be that high
     
  25. Feb 1, 2023 at 1:13 PM
    #25
    Maharisc

    Maharisc w/Patty

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    If you are raising the rear, the beam of the headlight will drop. I wouldn't think it would be significant.
     
  26. Feb 1, 2023 at 6:13 PM
    #26
    Lou1947

    Lou1947 New Member

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    It’s significant (much lower) I adjusted mine two and a half turns up and now they are perfect
     
  27. Feb 2, 2023 at 4:03 PM
    #27
    Hella Krusty

    Hella Krusty New Member

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    I adjusted mine at home, simple to do, did 3 adjustments to get it to sit at 38"ground to wheel well lip. Headlights I will let the dealer adjust at first service, just tell them they are too low.....warranty.
     
  28. Aug 15, 2023 at 2:40 PM
    #28
    K1212

    K1212 New Member

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    I have the same issue on my 2023 Capstone. I originally took mine to the dealership and told them it’s bottoming out continuously, so bad my back hurt after an 1 hour drive into the mountains. I dropped it off the night before so they had all day to fix it. They told me it was the 22” tires that was causing the issue and nothing they could do until Toyota changes their specs. After that I adjusted it myself after reading this forum and wrote these guys an email explaining how disappointed I was that I had to adjust this myself to make it rideable. I spent two hours at the dealership yesterday as their head technician tried to figure it out after my email. He showed me in their specs how it’s at 35 mm spacing or above it’s within tolerance, but at 35 mm it is constantly bottoming on the bump stops. I have it at 3.5 inches and the ride is night and day. Today I took another Capstone with regular suspension out because I wanted to compare and it’s unbelievable why the more expensive suspension rides so much worse than the cheaper stock suspension. The 22” tires didn’t seem to be a problem at all on that suspension.

    I’m ready to trade in mine with 1500 miles on it because of how terrible this thing rides and Toyota doesn’t seem to care! I have a call in with them also. They called me back and left a voicemail so I returned the call and the person assigned to me was supposed to call me back the next day. That was 2 weeks ago and still haven’t got the call. To say the least, I’m very disappointed that Toyota hasn’t addressed this problem because this is their top of the line Model that rides worse than any vehicle I have owned.
     
  29. Aug 15, 2023 at 2:51 PM
    #29
    Breathing Borla

    Breathing Borla I'd rather be fishing

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    It's not toyota, its your shit dealer man, sorry your having this trouble.

    mine nailed it the first time, its perfect and rides awesome. Here is what my tech wrote, he got it spot on right away. 35 is the plucking bottom, not the top.

    Now that said, 22" are shit for ride qauity but that has nothing to do with the bottoming out per the TSB.

    as far as "toyota", they fixed this by issuing the TSB and it works great, my platinum rides better than any other truck I have ever owned by far





    Screenshot 2023-08-15 at 4.46.34 PM.png
     

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