Try some lube spray in the lock as well. I use dry lube used on guns, but there's no electrical going through there anyway.I tried to turn my key to the ACC position today while I was sitting in a parking garage listening to my radio awaiting my time to go in for an appointment.
It took a bit of fooling around, but I got it to ACC and was able to listen to my radio without gassing myself with the engine running in a garage.
Fiddling with the lever didn't seem to help. It never went fully into ACC position, so I guess there's another thing that needs fix.....someday.
I'll start with Tophogs suggestion....someday.
Good Luck, L.M.