2011 Subaru Legacy suspension problems

2011 subaru legacy 2.5I CVT premium model : at highway cruising speeds of 60+ MPH, the vehicle feels "wobbly". The car feels as though it is getting swayed from side to side, even in good road conditions. This feeling is very unsafe. It causes a feeling of loss of control on the vehicle. This happens even though the weather conditions are normal (no excessive winds or cross winds). This seems noticeable to the passengers as well. The swaying happens in right as well as left directions.

Dash trouble lights flashing constantly on and off check engine, brake failure, all wheel drive failure, cruise control failure, temperature light, oil warning light, engine not engaging when gas pedal depressed. Car wobbles side to side at speeds greater than 60 MPH, steering wheel excessive vibration. Currently in repair for over one week. Appears dealership can not correct. When originally reported to service advisor he stated to bring in the car in one week.