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2011 air suspension

Discussion in 'Suspension' started by Jjones35117, Apr 14, 2019.

  1. Apr 14, 2019 at 1:04 PM
    #1
    Jjones35117

    Jjones35117 [OP] New Member

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    Hello everyone I'm a new tundra owner. I bought a 2011 tundra with about 107k miles on it. The guy I bought it from claimed it had air suspension on it installed from the factory. He stated that if I hooked up a trailer and the back sagged to a certain point a compressor would kick on and raise the back of the truck back up level.

    I have been under the truck and it does have the airbags and compressor but I've never seen it come on and I have hauled some major loads where the back sagged bad.

    So my question is where do I need to start to try to get this feature working?

    I have checked fuse boxes but cant seem to find a fuse description that would seem to match what I'm looking for.
     
  2. Apr 14, 2019 at 1:08 PM
    #2
    Nm6300'asl

    Nm6300'asl New Member

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    It is definately aftermarket, not a factory option. I would look for a switch installed somewhere on dash or trace the wires from point a to b.
     
  3. Apr 14, 2019 at 1:18 PM
    #3
    Jjones35117

    Jjones35117 [OP] New Member

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    Ok I have a wire jammed up under a relay under the hood with a 15 amp fuse in it. The fuse is good but I may have a bad connection somewhere. Thanks for the help
     
  4. Apr 14, 2019 at 1:19 PM
    #4
    Racingjohndeere55

    Racingjohndeere55 Asst. Pot Stirrer

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    Welcome from NE PA
     
    Jjones35117 [OP] likes this.
  5. Apr 14, 2019 at 1:26 PM
    #5
    Porschetech29

    Porschetech29 New Member

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    If the system is weight sensing you should have some type of height sensor or height sensing switch to actuate the solenoid. Do you see some type of sensor attached to the rear frame with a linkage to the axle? I would also start by looking under under the truck and trace the airlines from the air springs, they should lead to a solenoid. Then trace the wiring from the solenoid. Hopefully this will help you figure out is the system is laid out. The relay should have a control side and output side. If you have a voltmeter you may need to do a little electrical diag.
     
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  6. Apr 14, 2019 at 1:26 PM
    #6
    Porschetech29

    Porschetech29 New Member

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    Oh ya, definitely not factory
     
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  7. Apr 14, 2019 at 1:33 PM
    #7
    Jjones35117

    Jjones35117 [OP] New Member

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    I have a multimeter and trouble shooting it that way should be no problem at all. I really wanted to know if it was factory or aftermarket so I knew kinda what I was getting into.
     
  8. Apr 14, 2019 at 2:49 PM
    #8
    Berdine

    Berdine Ironhide

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    If there are no airbags on your rear axle then someone removed it. Or he lied.
     
  9. Apr 14, 2019 at 3:52 PM
    #9
    Jjones35117

    Jjones35117 [OP] New Member

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    There are airbags there and the compressor is there. I've just never seen it work
     
  10. Apr 15, 2019 at 3:19 PM
    #10
    Jjones35117

    Jjones35117 [OP] New Member

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    Ok so I got an update and a few more questions. First of all I tracked the wire back to the fuse box under the hood and it was pulling power from a leg of a relay marked “back p/w no.1” what is that relay controlling and when would it come on?

    Secondly the wiring under the truck goes to a compressor and some sore of control box I’m thinking a regulator maybe. Anyway the only writing I can find on any of it say “made by mix” and the witing on the wires says wireless harness.

    Any help would be appreciated
     
  11. Apr 15, 2019 at 3:20 PM
    #11
    Jjones35117

    Jjones35117 [OP] New Member

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    Also I could not find a limit switch that would turn it on or off any ideas where to look? I looked all around the shocks and leaf springs
     
  12. Apr 15, 2019 at 3:42 PM
    #12
    jeremyd

    jeremyd 2014 Crewmax SR5

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    Got any pictures ?
     
  13. Apr 15, 2019 at 3:43 PM
    #13
    Jjones35117

    Jjones35117 [OP] New Member

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    I can get some what would u like pictures of
     
  14. Apr 15, 2019 at 3:44 PM
    #14
    jeremyd

    jeremyd 2014 Crewmax SR5

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    Start at the bags then the wiring..

    Internet diagnosing is some new shit ! Lol
     
  15. Apr 15, 2019 at 3:46 PM
    #15
    Jjones35117

    Jjones35117 [OP] New Member

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    Ok I will. Just something I didn’t mention is that there are no wires going out to any switch that I can find. And I can’t find the switch to save my life.
     
  16. Apr 15, 2019 at 3:51 PM
    #16
    Jjones35117

    Jjones35117 [OP] New Member

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    Air bags and some of the wiring

    02B632B1-B397-4CEF-9E98-14BE32917E78.jpg
    7AF4EFA6-9850-42F0-BFB7-92831E4B0D44.jpg
     
  17. Apr 15, 2019 at 3:52 PM
    #17
    Jjones35117

    Jjones35117 [OP] New Member

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    Label and more wiring and compressor

    AB3883EF-D794-4C19-A344-84B20CDA7626.jpg
    7D6CB061-D2BF-45DD-B3D8-A046CBEB7C99.jpg
     
  18. Apr 15, 2019 at 3:53 PM
    #18
    Nm6300'asl

    Nm6300'asl New Member

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    Looks like that connector went to something that controlled the system, 2nd pic by frame.
     
  19. Apr 15, 2019 at 3:54 PM
    #19
    Jjones35117

    Jjones35117 [OP] New Member

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    Other part of label and what I think is the directional control valve

    06EE0BC3-526A-465F-94DC-220A6DA5FD77.jpg
    BA69D4BF-4163-48FC-A41B-5549143062E6.jpg
     
  20. Apr 15, 2019 at 3:54 PM
    #20
    Nm6300'asl

    Nm6300'asl New Member

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    Wow, 2nd set of pics, thats a mess.
     
  21. Apr 15, 2019 at 3:54 PM
    #21
    Jjones35117

    Jjones35117 [OP] New Member

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    The second pic is of a relay
     
  22. Apr 15, 2019 at 3:55 PM
    #22
    Jjones35117

    Jjones35117 [OP] New Member

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    Yea if I can figure it out and get it working it I will clean it up
     
  23. Apr 15, 2019 at 3:56 PM
    #23
    Nm6300'asl

    Nm6300'asl New Member

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    I would replumb and protect all the wires, hoses, connectors.
     
  24. Apr 15, 2019 at 3:58 PM
    #24
    Nm6300'asl

    Nm6300'asl New Member

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    Holy cow, the compressor is zip tied to the frame. You could just run new air lines and manual fill, cheap and easy.

    Edit: Sorry not frame, bed reinforcement.
     
  25. Apr 15, 2019 at 4:15 PM
    #25
    Jjones35117

    Jjones35117 [OP] New Member

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    I thought about running a toggle switch into the cab and using it to pump it up but I'm worried it will over fill
     
  26. Apr 15, 2019 at 4:44 PM
    #26
    jeremyd

    jeremyd 2014 Crewmax SR5

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    I would put 12 volts to that compressor and see if it even works.

    Better yet, start the truck and check to see if there is 12 volts going to the compressor.
     
  27. Apr 15, 2019 at 4:52 PM
    #27
    Porschetech29

    Porschetech29 New Member

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    Looks like the firestone ride rite wireless control kit. Definitely firestone bags and brackets. Look up the install instructions and figure out how the previous owner installed the system
     
  28. Apr 15, 2019 at 5:15 PM
    #28
    Jjones35117

    Jjones35117 [OP] New Member

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    Thanks man I’ve been trying to just get to a manufacturer so I could look up their stuff
     
  29. Apr 15, 2019 at 5:17 PM
    #29
    Jjones35117

    Jjones35117 [OP] New Member

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    So it looks like the ride rite has a remote not a switch is that correct
     

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