The steering becomes heavy intermittently. sometimes like there is no steering assist. also wheel does not come back to center after turns. typically on colder days and driving at slow speed.
While driving straight on a two-lane paved city street at about 30 mph the steering became heavy and pulled strongly to the left. clear weather, moderate temperatures. i stopped the car after a half mile or so, shut it off completely then restarted it. the problem was gone. it has not yet reappeared. tire pressures were on the low side of normal. none were abnormally low and the tires were in good shape. cause is unknown. dealer had no idea what happened.
While driving on the road speed about 40-50 mph, steering wheel suddenly became stiff and very hard to turn. the wheel does not want to center. it happened randomly and can't be reproduce easily. it happened 3 times in the past w months. i feel it very dangerous when this happened while on the road. it fixed itself the next morning.