I suffered a "steering assist reduced" in my MS60 2014
I read all about the Tesla recall steering column bolts SB-18-32-002 but besides cold weather, and bolt corrosion, another cause for the steering to fail is windshield drain water that enters the cable loom to the steering rack and finally makes it fail as was reported by Tesla technician.
Now Tesla SeC claims this is no warranty, driver cost, I am not the only one (technician told he saw ~3), this is a design issue!
I am quoted some 4500 USD! By text message, that is how support works in Europe nowadays.
Out of warranty and Tesla will be not so nice in times of trouble.