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CDL/ 4Lo indicator switches

Discussion in '100-Series Cruisers' started by LouisianaRubicon, Feb 9, 2018.

  1. LouisianaRubicon

    LouisianaRubicon

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    2007 LX 470

    No dash lights come on after CDL engaged or shifting to 4Lo. Systems are working so it must be the switches on top on t-case.

    Do I need to replace all three? Does anyone have the part numbers?
     
  2. LouisianaRubicon

    LouisianaRubicon

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  3. Trunk Monkey

    Trunk Monkey Moderator

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    Could be bulbs too, easy to check and cheaper than switches. Do you hear any relays clicking in the cab when you press the CDL button?
     
  4. LouisianaRubicon

    LouisianaRubicon

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    Yes, the relay in the dash clicks and it goes into 4hi.
     
  5. Trunk Monkey

    Trunk Monkey Moderator

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    Have you verified it's not locked? Shift t-case into 4Lo, press CDL button, turn a circle, drive train should bind up/tires chirping. If the truck's never been used off-road before you, then it's possible the locker just needs some working to engage. Find a parking lot and drive a long S pattern to see if it will click in.
     
  6. LouisianaRubicon

    LouisianaRubicon

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    The systems work. Tires chirp/ drive line binds when shifted into 4LO or CDL switch engaged.
     
  7. Trunk Monkey

    Trunk Monkey Moderator

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    Then it's probably a burned out bulb in the dash cluster.
     
  8. LouisianaRubicon

    LouisianaRubicon

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    I see. The dealer tried to sell me a new gauge cluster. I knew that couldn't be the case... Is there any way to verify its bulbs without taking the dash apart?
     
  9. Trunk Monkey

    Trunk Monkey Moderator

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    Gauge cluster isn't too hard to remove, top of steering column plastic, black trim below cluster, couple of screws and two locating bolts.
     
  10. LouisianaRubicon

    LouisianaRubicon

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    Thanks, I'll look into bulbs first
     
  11. rjones

    rjones SILVER Star

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    This is almost always the switch on the t-case in my research. There are lots of threads in the 100 section about this and I read them all. I was in the same boat as you with the CDL working and the dealer offering to replace the entire cluster but then I read up in here.

    I bought a switch and the longer/larger wrench that is supposed to help make it easier to swap out but never got around to it. After two days on a particularly bumpy/rocky trail with the CDL engaged most of the way BOOM the light came on and has worked ever since. Replacement switch sitting in my toolbox as I type.

    EDIT: 2006 LX for reference

    Good luck!
    rjones
     
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  12. LouisianaRubicon

    LouisianaRubicon

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    Thanks. Did you buy the oem switch?
     
  13. rjones

    rjones SILVER Star

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  14. LouisianaRubicon

    LouisianaRubicon

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