Hi, 2 days ago when I'm about to go at work just seen a red light warning sign in my Daihatsu charade car.I was confused what does it means with the red light warning sign.can you help ?

Don't keep driving this car if a red light comes on. Go and have a mechanic look at your car and diagnose the problem. Red lights means the car wants and needs mechanical attention. Do not ignore them.

I would check Oil and water first.

Can you describe what the "red light warning sign" looks like? This would help in further identification of potential causes.
Having no specific familiarity with a daihatsu, I can only guess by it's color.

Most red warning lights apply to safety items (brakes, e-brake, seat belts), or engine oil pressure/level, temperature, or coolant level. Some vehicles include other systems in "red", but most only include the critical systems.

It could be something as simple as a battery light, or something as critical as a brake failure. If you are not 100% confident in identifying the source, have a professional look at it.

Just saw where it may be Brake fluid.
http://www.daihatsu-drivers.co.uk/node/10050