If you can't get your column shift out of park the mech in the column is sticky.
This is one of those "protect you from yourself" safety features.
Two things need to happen before you can take the vehicle out of park
#1 The key must be in the "run" position. This will disengage the steering wheel lock and let the brake safety switch become disengaged when you depress the brake peddle
#2 The brake pedal must be depressed which disengages the shift lock.
If #1 works and #2 doesn't it is real pain.
Typically this is from lack of use. My Sunrader had under 30k miles on it when I purchased it. The column lock got stuck the first year I owned it and the Sunrader sat in my garage for a full year while I "fought" with the shift lock mech.
The worst thing was it started acting up when we were way off the grid in the UP of Michigan and the moose, wolves, and deer were of little help in fixing it
Removing the cable from the brake pedal housing will NOT fix the issue as the real problem is the steering column not the brake pedal or cable.
The "fix" is to use your RV frequently. If you're on the road when this happens you "can" shut it off in neutral which will stop the park lock from engaging. .....BUT...... you can't pull the key out with the shifter in neutral......
So far I have not found a way round this as the floor shift steering column and the column shift steering column are too different to disassemble both types and get a column shift with NO shift lock.
I did look into trying to adapt the electric/relay type floor shift lock to the column shift so I could use a dash switch to lock and unlock the shift lever but here again the physical steering columns are just too different between the electronic shift lock of the floor shifter and the mechanical/cable shift lock of the column shift steering column.
So after a few years I still have no "real/permanent" fix for this problem
The link Linda posted to the toyota-campers yahoo group photo section requires you to be a member so I've uploaded the page from the factory service manual to my photobucket account so that you can view it here
http://i1066.photobucket.com/albums/u414/turtle-web/RV/sunrader/brake-park_lock_zps2d535a7c.jpg
turtle