In the event of power steering failure, gripping the steering wheel firmly and using more effort to steer allows you to maintain control of the vehicle manually. Power steering systems make turning the wheel easier, so without it, you'll need to exert more force to turn but can still control the vehicle. It's essential in such situations to stay calm, apply consistent pressure, and maneuver safely to a stop or off the road. Manual steering without power assistance requires greater physical input but ensures continued direction capability.