What Causes the Oil Change Warning Light to Come On?

[LeEleanor]

The reasons for the oil change warning light coming on are: 1. The oil sensor is damaged; 2. The oil viscosity is too low, the oil passage sealing and lubrication are poor, the lubricating oil is too cold with excessive viscosity, or there is too much oil sludge buildup. The functions of engine oil include: lubrication, auxiliary cooling, cleaning, sealing to prevent leaks, rust and corrosion prevention, shock absorption, and anti-wear. The steps for changing engine oil are: 1. Lift the vehicle, remove the underguard, and place a container of about 10 liters under the oil drain plug; 2. Unscrew the oil drain plug, use an air gun to blow into the oil filler port for two minutes, tighten the drain plug after draining, and wipe it with a tissue to check for leaks; 3. Reinstall the underguard and lower the vehicle, then use a funnel to add oil into the filler port.