Final answer:
A possible indication of a leak in the power steering system is difficulty in turning the steering wheel, whining or groaning noises from the power steering pump, and visual signs of fluid puddles or drips.
Step-by-step explanation:
A possible indication from a leak in the power steering system is difficulty in turning the steering wheel. When there is a leak in the system, the power steering fluid, which helps with the ease of steering, can escape, leading to a loss of power steering assistance. This can make it harder for the driver to turn the wheel, especially at lower speeds or when parking.
Another possible indication is a whining or groaning noise coming from the power steering pump. The leak can cause the pump to work harder and make unusual noises as it tries to provide the necessary pressure for steering. Lastly, visual signs of fluid puddles or drips under the car or around the power steering components can also indicate a leak in the system.