During a pre-trip inspection, which issue must be fixed before driving?

Steering wheel play of more than 10 degrees is a critical issue that must be addressed before driving because it directly impacts the driver’s ability to maintain control over the vehicle. The steering mechanism is essential for safe maneuvering, and excessive play can lead to unpredictable vehicle behavior, especially at higher speeds or during sudden maneuvers. If steering play exceeds the recommended threshold, it can indicate potential problems within the steering system, such as worn components or misalignment. Ensuring that the steering system is functioning properly is vital for the safety of the driver, passengers, and other road users.

Other issues, while still important for overall vehicle maintenance, do not necessitate immediate fixes before driving. Oil on the tie rod may suggest a leak or excessive wear but does not directly impair steering control. Gray smoke from the exhaust pipe can indicate engine problems and is a sign that further inspection is needed, but it may not necessarily prevent the vehicle from driving safely in the short term. Changing an air filter is part of regular maintenance but does not impact the immediate safety of the vehicle during a trip.