center diff lock light - Defender Source
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  #1  
Old August 21st, 2009, 12:57 AM
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barry f
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center diff lock light

I am driving home tonight and my diff lock light starts to flicker and all of a sudden turns on. No clue why. I pulled over and looked to make sure the lever wasn't out of wack. Nothing seems wrong. I then played with it and switched it from side to side and drove a few feet with the transfer case in low then back to high. Leverl is down and to the right. I tried reversing. Nothing.

Any ideas?
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  #2  
Old August 21st, 2009, 01:18 AM
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  #3  
Old August 21st, 2009, 01:38 AM
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How do I test it and is this common? Can I drive it this way?
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  #4  
Old August 21st, 2009, 02:02 AM
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see the email I sent you. before driving you need to be 100% sure it is not partially locked. I saw this about 3 or 4 times where it was partially locked and would "catch" and blow up the diff.
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  #5  
Old August 21st, 2009, 02:15 AM
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The problem is that it could be partially engaged and could pop into lock and destroy the diff in the t-case.
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Old August 21st, 2009, 10:56 AM
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The wire might be grounding somewhere between the cluster and the T-case and making the light turn on. That might be worth looking at.

Pat
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  #7  
Old August 21st, 2009, 01:03 PM
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I think it is the light or the sensor. Truck is driving fine and I engaged the lock and disengaged it and everything works fine.

Annoying
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  #8  
Old August 22nd, 2009, 01:10 AM
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It was a loose wire. All is well again until my next post.
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  #9  
Old May 5th, 2012, 03:20 PM
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I found some mud this morning and locked the center up. My diff lock light did not illuminate, in the past it would take a few revolutions to illuminate. The center is unlocking and locking as it should. Two things I noticed, the parking brake light doesnt illuminate when I pull the handle up but will light up when I start the truck. Also, the t-case shifter is rather loose.

Do the diff lock and parking brake share a circuit or is it coincidental?
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  #10  
Old May 5th, 2012, 05:14 PM
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Swapped switch light works, brake light working as well.
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  #11  
Old May 7th, 2012, 11:28 PM
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Quote:
Originally Posted by JSBriggs View Post
Sounds like your good, but for the archives: The parking brake and diff lock lights are separate circuits. What they have in common is that each switch can be adjusted, and often when the aren't working, a simple adjustment of the switch is all that is needed.

-Jeff
Is said switch on the top of the tcase? And how do you "adjust"?
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  #12  
Old May 8th, 2012, 12:24 AM
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On my disco lt230 it is directly behind the rhs footwell. You must remove the floor panel to access it (removing the center tunnel helps also)

On my switch, adjustment is just a matter of threading the switch in or out - similar to the brake lights
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Old May 8th, 2012, 12:28 AM
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Yeah, transmission tunnel or access under the cubby box in the Defender. I'm going to change mine out as mine isn't shifting into lock and I suspect the switch is gummed up and stuck down not allowing the diff to lock. I'll also have better access to the the linkage too if that ends up being the problem.
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  #14  
Old May 8th, 2012, 05:57 AM
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Also for the archives, unlike the NAS and older trucks that use the switch on the T/C to complete a ground for the diff lock light, the TD5 trucks feed the switch hot (+12v).
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  #15  
Old June 25th, 2016, 03:06 PM
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Is this switch part number PRC2911 for an LT230??
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  #16  
Old June 25th, 2016, 06:47 PM
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Quote:
Originally Posted by JSBriggs View Post
Allbrit MG ROVER & Mini Classic Teilekataloge You can look it up here. -Jeff
thanks

google translate time
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  #17  
Old June 25th, 2016, 07:06 PM
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Quote:
Originally Posted by JSBriggs View Post
Allbrit MG ROVER & Mini Classic Teilekataloge You can look it up here. -Jeff
Thanks again Jeff ! - part number confirmed

#22 (PRC2911 switch - high/low) / front output shaft / lt230 / transfer box / defender 1987-2006
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