Which of the following is NOT a step to take when turning on the engine?

When starting the engine of a vehicle, there are important safety checks and preparations that should be made to ensure a safe driving experience. Checking fuel and lights is essential to confirm that your vehicle has sufficient fuel to operate and that all lights are functioning correctly for visibility and communication with other drivers. Adjusting the stereo, while not a critical safety step, can be part of establishing a comfortable driving environment. Turning on headlights, signals, and windshield wipers, when necessary, is important for visibility and safety, particularly in poor weather conditions or low-light situations.

On the other hand, checking tire pressure is generally not a step taken immediately before starting the engine. While maintaining proper tire pressure is crucial for safe driving and overall vehicle performance, it is typically done as part of regular vehicle maintenance rather than as a preparatory step when preparing to drive. Therefore, this action is not aligned with the immediate steps needed for starting the engine and is why it is identified as the correct response in this context.