Toyota Camry rough idle issue after battery change, resolved by driving to reset ECU on Toyota Camry

Some Toyota Camry owners report experiencing rough idle issues after a battery change, which can often be resolved by resetting the Engine Control Unit (ECU) through driving. This reset involves turning the key to the ON position and pressing the accelerator pedal fully for about 40 seconds, allowing the system to recalibrate and adapt to the new battery. Additionally, owners may face other common solutions for rough idling, such as replacing worn-out spark plugs and wires, cleaning or replacing a malfunctioning Idle Air Control (IAC) valve, and checking the engine air filter for clogs. Regular maintenance and inspections of these components are crucial for preventing rough idle issues and ensuring the vehicle operates smoothly.