Electronic Stability Control Related Problems of the 2011 Subaru Legacy

Electronic Stability Control problem

While driving on the highway at 60+ mph the vehicle exhibits a severe "sway" or pull from side to side. The severity of the swaying increases with speed, the driver has to "fight" the steering wheel to keep the vehicle centered in its lane. The sway/pull has been present since the first highway trip at about 1000 miles, and is still present after dealer checks and realignments. The swaying can be so severe as to make the driver feel the car is uncontrollable at normal highway speeds. The swaying can be so severe as to cause the vehicle to depart from its lane. The swaying/pulling occurs in all road conditions. Passengers in the vehicle have commented on the swaying, stating they felt "unsafe". Tire pressures have been checked and adjusted to manufacturers specifications before each highway trip. When tested with a chase vehicle the 2nd vehicle did not exhibit these symptoms ruling out road/wind conditions.