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What does this switch do? on 2011 John Deere 85D Excavator

Discussion in 'Excavators' started by Serega, Oct 12, 2019 at 9:35 PM.

  1. Serega

    Serega Member

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    Hey does any one know what this little toggle switch is for on 2011 John Deere 85D.
    It is located inside the fuse box and has a guard over it... see picture JD Switch pic.jpg
     
  2. Bls repair

    Bls repair Senior Member

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    From picture I would guess emergency shut off?
     
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  3. Ronsii

    Ronsii Senior Member

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    Emergency engine kill is at the bottom of the seat, pull lever.

    I jumped through the operators manual but didn't see anything... self destruct???? ;)
     
  4. uffex

    uffex Senior Member

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    Good day
    On many machines there are ECU by-pass with a separate engine control this looks kind of similar.
    Kind regards
    Uffex
     
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  5. mg2361

    mg2361 Senior Member

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    It is a "learning switch" and should not be touched. Just make sure it stays in the center position (which it looks like it is). It is used for engine speed learning when any engine speed components have been replaced or adjusted.
     
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  6. funwithfuel

    funwithfuel Senior Member

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  7. Ronsii

    Ronsii Senior Member

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    LOL!!! Yeah, FWF I thought about putting up a pic like that :D
     
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  8. Serega

    Serega Member

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    No, I think the shut off is the one right below it. but this small one must be for something else..
     
  9. Serega

    Serega Member

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    yea.. I don't want to play with it to see what would happen just not to cause some issue but it bothers me not to know what it does...
     
  10. Serega

    Serega Member

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    Interesting... (Would EGR delete be considered one of those?)
     
  11. mg2361

    mg2361 Senior Member

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    Nope.
     
  12. LACHAU

    LACHAU Well-Known Member

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    You are right, Sir.

    LEARNING SW.png

    LEARNING SW 2.png