Hi - I have had many different Jeeps but picked up my first liberty (2008/approx. 80k/bone stock) in October. When the weather turned cold (around 20F) we began to have problems with the ignition switch not turning. It doesn't appear related to steering wheel lock. When temp increased problems disappear.
I have had problems with cylinder wear in the past, but this has a programmable key so am leery of just ripping it out and replacing. Has anyone else a similar problem? Any help is appreciated. Thanks.

That's often the case when the factory lube (grease) in the lock gets cold, and turns to basically wax.
Use a good spray lube such as
https://www.amazon.com/Super-Lube-31110-Aerosols-Multi-Purpose/dp/B01LZ50F48/ref=sr_1_3?ie=UTF8&qid=1514498098&sr=8-3&keywords=synco+super+lube
or
https://www.amazon.com/Tri-Flow-TF20006-Superior-Lubricant-12-Ounce/dp/B000SKY3GO/ref=pd_sim_236_1?_encoding=UTF8&pd_rd_i=B000SKY3GO&pd_rd_r=GA16X9SV2YTZDTZ3HBB2&pd_rd_w=rx3XD&pd_rd_wg=cESGS&psc=1&refRID=GA16X9SV2YTZDTZ3HBB2

This will soften the grease, flush out dust/dirt, and allow the lock to move freely.
Give it a shot every fall, and you won't have that problem again.

_________________
'06 Lbrty Sprt CRD 150K

Sasquatch
DSS Turbo
CAT-elimntr
Weeks Stg1&2 EGRfix
PV-200
BLING
vent gauges

IDParts
head
cams
rockers
Timing set
ARP studs
eTn1 GX2123 5v GPs

YETI Custom Tune
Flowmaster 8325508
Carter P76611M
GM 12611872
Hayden 2986
GM 15976889
PATC Custom Billet
2010 Ram Hemi Trans
Sonnax 44957
Transgo kit
Cooper 51770

Thanks Gordnado Ill give it a shot. Appreciate the tip.