If you suddenly lose control of your power steering wheel, you must avoid turning off the ignition:

• Because your vehicle may completely lose either the power steering or its ability to steer
  Explanation:

  "In the event of steering failure, do not turn off the ignition If your vehicle has power steering or a locking steering wheel, because your vehicle will lose either the power steering or its ability to steer."
• Because the engine may get damaged
• Because the engine will become overheated
• None of the above