What Causes Difficulty in Engaging Third and Fourth Gears?

[RubyLee]

Difficulty in engaging third and fourth gears is related to the transmission. Below is an introduction to the various gears in an automatic transmission vehicle: 1. P (Park) Gear: This is the parking gear, which uses mechanical devices inside the transmission to lock the rotating parts of the vehicle. It must only be used when the vehicle is completely stationary. Additionally, the gear must be in P when the engine is turned off. 2. N (Neutral) Gear: This is the neutral gear, typically used during brief stops. When in neutral, the driver can release the brake pedal to rest their right foot. However, on slopes, the brake must still be applied to prevent the vehicle from rolling unless the parking brake or electronic brake is engaged. 3. D (Drive) Gear: This is the forward driving gear. When in D, the driver only needs to control the accelerator pedal to adjust the speed. The transmission will automatically determine the appropriate gear based on the accelerator input and vehicle speed, eliminating the need for manual gear changes.