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Old 04-04-2009, 10:59 PM
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rubicon help

Yesterday i bought a 04 rubicon. it was used but only had 45000 miles on it and looked pretty good so i got it. anyways ive never driven a rubicon and dont really know the correct way to lock the diffs. i see the button but im afraid to push it for fear of messing something up. it didnt come with an owners manual and the dealer didnt really know either. could someone tell me the correct set up to do it? (by the way its an automatic, and is there a downloadable owners manual for my jeep)?

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Old 04-04-2009, 11:22 PM   #2
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My 08 wont lock unless in 4L....

You should be able to get the manual here: My Jeep: Jeep Owners Service Manuals - 4x4 SUVs, Sports Utility Vehicles, Off Road

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Old 04-04-2009, 11:43 PM   #3
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I believe it will only lock-work when traveling 10mph or less and in 4-low. It's used to lock your axles so all four wheels get same amont of torque = if one wheel slips, it just won't spin freely while the other does nothing. Someone correct me if im wrong here.
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Old 04-05-2009, 01:33 AM   #4
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Push the button down once - the rear locks and it's indicated such on the instrument panel.
Push it a second time, the front locks (rear stays locked) and another indicator lights on the dash.
Pull it up and it unlocks both. You''ll see.

It flashes at first, meaning the teeth aren't fully engaged yet - or disengaged - once it stays on solid it means it's fully locked. Don't strain it while it's still flashing - you can ruin it.
Sometimes if it stays flashing, simply straighten the wheels a little and roll forward.

Locked it doesn't like to turn - so when using it, first line up the rig with the hill, then lock it. Sometimes going down a slippery loose hill you are best to unlock both front and rear for better control.

That's the beauty of selectables - like the ideal wife, you can turn them on and off at will.

Once you get used to "when you want it," you'll love it!

It will lock in Hi range too, but at speeds over 10-15 it unlocks. That's a safety feature to prevent someone from hitting the switch at higher speeds - that could be dangerous.

I can't believe the dealer doesn't know! Incompetence is rampant.
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Old 04-05-2009, 10:31 AM   #5
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It only locks in 4LO unless someone previously did the safety by-pass.

If your going to try it make sure your on grass, a dirt road or gravel road, you should not try using on the street.

Like the above statement, push the button once to lock the rear and the light will start flashing that it's trying to engage. Once fully lit the rear locker is now engaged. Push button again and front locker will engage. Push button for thrid time and the lockers will dis-engage. Wait until the lights stop flashing and turn off to put back in 2hi and drive again.

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Old 04-05-2009, 11:19 AM   #6
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x2 on what snwchris said, except:

If you are locked up and no longer need the lockers or 4lo, you can just shift into 4hi or 2hi and they will disengage also. Normally, you would unlock and stay in 4lo, but you don't have to do that.

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