Toyota Highlander check engine light indicating all wheel drive problem with intermittent reset after oil change on Toyota Highlander

Some Toyota Highlander owners report experiencing issues with the check engine light indicating problems with the all-wheel-drive (AWD) system, which is essential for traction and stability. These owners note that intermittent resets of the warning light after an oil change may suggest a temporary fix that does not resolve the underlying issue. Common causes identified include problems with the charcoal filter, gas cap, discharged battery, or other components impacting AWD functionality. It is advised that owners have the AWD system inspected by a professional if the warning light persists or reoccurs, as neglecting this concern could result in more serious damage to the vehicle. Additionally, monitoring the dashboard for the AWD warning light and addressing any ongoing issues promptly is crucial for maintaining the vehicle's performance and safety.