* Low Tire Pressure: You need to inflate your tires to the proper pressure. Check the sticker on the driver's side doorjamb or your owner's manual for the recommended tire pressure (usually in PSI). Use a reliable tire pressure gauge to check and inflate your tires accordingly. Once properly inflated, the low tire pressure warning light should go off after driving a short distance.
* Change Engine Oil: This isn't a warning light; it's scheduled maintenance. Consult your owner's manual for the recommended oil change interval (usually mileage-based). You'll need to get the oil changed using the correct type and weight of oil specified in your owner's manual. An oil change will not affect any warning lights.
* Coolant Level: If your coolant level is low, you have a leak somewhere in your cooling system. Do not simply add coolant. Low coolant can cause serious engine damage. Find and address the source of the leak before adding coolant. Top it off only to the minimum/maximum level line in the coolant reservoir (usually a translucent tank). If the level keeps dropping after addressing a leak, you may have a more serious problem that needs a mechanic's attention. The low coolant level warning light is independent of other issues.
In short, there are no dash codes to remove. Address each warning individually as described above. If a warning light stays on after you've addressed the suspected issue, you may have a more serious problem that requires professional diagnosis from a mechanic.
