In a Toyota Corolla, the “B” typically refers to the “B” gear in the transmission, which stands for “Brake” or “Engine Braking.” This mode is often found in vehicles with automatic transmissions and is used to help control the vehicle’s speed when driving down steep hills or when you need to slow down without using the brakes excessively.
When the shifter is in the “B” position, the transmission will hold lower gears longer, allowing the engine to help slow down the vehicle. This can reduce wear on the brake system and provide better control in certain driving conditions, such as descending a hill.
It’s important to consult your vehicle’s owner’s manual for specific information regarding the transmission and the use of the “B” mode, as features may vary by model year and trim level.