Instead of relying on a warning light, open the hood and use the dipstick, with the car standing on a level surface. If the sump needs topping up, make certain it is with oil of the correct viscosity and grade.
2. Check the coolant level with the engine cold.
On most cars, the level can be seen through the translucent expansion bottle.
3. Ensure your fuel tank is full.
If you are traveling to an unfamiliar area, you will not want to waste time looking for gas, or risk running out.
4. Ensure the brake fluid level has not dipped below its minimum line.
There is no need to remove the cap, as the brake fluid container is often see-through.
5. Prior to setting off, make sure that the tire pressures are correct.
If you are carrying rear seat passengers and/or heavy luggage, note that the rear tire pressures can be increased slightly. Check the tire tread depth and that the sidewalls are not damaged.