* Oil Change: This is the most common reason. The light likely activates at a pre-programmed mileage interval (consult your owner's manual for the specific interval for your engine).
* Other Scheduled Services: The manual will also specify other services due at certain mileage intervals, such as:
* Filter replacements (air filter, fuel filter)
* Lubrication (greasing chassis components)
* Spark plug replacement (if applicable)
* Other inspections (belts, hoses, fluids)
* Resetting the Light: Importantly, the light is often *not* self-resetting. After completing the maintenance, you'll typically need to manually reset the light, often by a specific procedure involving the odometer or a combination of key turns. The owner's manual will detail this.
In short, the light means it's *time for a check-up*, not necessarily that something is broken. Ignoring it, however, can lead to more serious and expensive problems down the line. Check your owner's manual for the specific recommended maintenance schedule and how to reset the light.