Hi I have an '05 Libby. It now has just a tad past 20K on it. It has the standard auto tranny. Yes, she gets used a lot on our geocaching expeditions. I have noticed over the past 5k or so that it is going out of overdrive without my pushing the button. The OD light lights up "off" as well. Have not really been able to pinpoint when it has happened except for tonight on the way home from work to avoid a rear ender, I nailed the brakes tonight and it did it again. Other times seems to have been while in cruise control for no apparent reason on fairly level terrian. Mean Sea Level here is about 1000'. Question is is this a normal thing? When it goes out, pushing the OD button takes it immediately back in. Other than that the tranny seem perfect and shifts great. A bit concerned as I have read many threads about the apparent weak auto and it does not have the 75K warrenty. Oh, also I have never had a "hot" transmission light even flicker. Thanks for your time

Jack

Sure sounds odd to me. I have the same tranny you do (assuming you have the 3.7L) and mine has never done that in 2 1/2 years. I'd take a trip to your dealer.

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Jeremy - Aurora, CO
L.O.S.T. #0

Future:
2016 Hydro Blue JK Unlimited Rubicon Hard Rock

Previous:
2012 Flame Red JK Unlimited Rubicon - Sold!
2012 Flame Red JK Unlimited Rubicon - Dealer buyback
2003 Silver KJ Freedom 4x4 - Sold!
32s, Frankenlift, BBars, onboard air, dirt.
KJ EVIC Install

My first thought is that the switch on the gear shifter for the Overdrive button may be going bad.

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-nate
LOST#NL068123 - 2005 Renegade 3.7L 4x4, Off-Road Package, Rock Rails, Skids, Command-Trac, Trac-Loc LSD, Light Bar, K&N Drop in Filter, AMSOIL LUBES, RRO's Diff Guard for 8.25", Frankenlift, & Goodyear MT/R's
Cardomain

Pressing the 'O/D' off button on the shifter sends an electonic signal to the transmission that tells the gear box to lock out the overdrive. If your car is going in without pressing the button, than you are having a electical issue with possibly two things:

1.) The shifter itself (the switch or wiring)
2.) The transmission (the box that 'locks out' the O/D)

Definently take your Liberty to the dealer and report the issue.... It won't fix itself over time and could get worse.

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02 Liberty Limited
Silver Outside & Taupe Inside
Heated Seats, Sunroof & Infinity speakers
USA Spec I-Pod adaptor, Mopar Sub, Garmin GPS
Tow Package, Select-Trac
Rock Rails, Tow Hooks

On some vehicles, the computer will lock out overdrive if the transmission gets too hot. Might be that way with Jeep as well.

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2005 Stone White KJ Limited CRD 4x4
Off-Road Pkg
Trac-Lok
Emu 790s/948s
Skyjacker H7088s rear/Bilsteins front
15x7 Black Rock Lobos/31x10.50 Firestones
GDE HOT Tune + TCM Tune
Euro TC
CB radio
Thrush Turbo muffler
AEM DryFlow filter