10* outside. I have a feeling it is programed that way to help warm up the engine and trany fluid. at least that's what I hope. tranny fluid and filters changed 15000 miles ago.

I think you are correct. Trans won't shift to OD until the fluid temp reached a certain value. Not sure what that temp is though.

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2006 Jeep Liberty CRD Limited
Gen2 Fuel Head - Magnaflow Exhaust - Ram transmission swap - In-Tank Lift Pump
Moab Wheels - 245/75/R16 LR E Cooper Discoverer AT3 Tires - OME Lift 790/90009 948/60069 - Etecno Glow Plugs - V6 Airbox
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Pic of my Jeep!

You are correct: even here in the mostly warm south, if the ambient temperature drops overnight in the winter months into the low 30's or into the 20's, the transmission will not shift into 5th OD on a cold start at first driving until the transmission fluid warms up a bit....

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Supporting Vendor and Moderator of LOST
05 Jeep Liberty CRD Limited
Ironman Springs/Bilstein/Shocks
Yeti StgIV Hot Tune
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No FCV/EGR
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Carter Intank-pmp
2mic.Sec.Fuel Filter
Flowmaster/NO CAT
V6Airbox/noVH
GM11 Bld.fan/HDClutch
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98 Dodge Cummins 24 Valve

thanks guys for the info, first really cold snap we have had.

It's a Chrysler thing. All the Dodge trucks I have had done the same thing, none of the GM or Ford trucks that I have owned do it. It can be annoying, especially when it gets cold -30 to -40c.

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2014 Chevy Silverado Crew Cab 5.3 Ecotec LTZ Z71 4x4
2012 Ford F-150 XLT EcoBoost 4x4
2007 Chevy Silverado 2500 HD D-Max 4x4
1996 Dodge Ram 1500 4x4 (just about dead)
2006 Jeep Liberty CRD