Approximately 2 years ago when descending a mountain in Arizona, on way back to Texas, I suddenly lost both steering and braking on my 97 fj80! Almost panicked! Had to use lower gears to descend safely. After arriving on level ground, at the base of the mountain, all the symptoms went away ! Then drove all the way back to Texas without a problem and haven't had the same issues since. Now afraid to drive in mountains as there have been no subsequent "fixes" done. Does any one know what could have happened? Both power steering and brake fluids were at normal levels at the time.