A warning light in the shape of a triangle with an exclamation point inside the triangle and the triangle is enclosed by a cirle

Master Warning: An exclamation point inside a triangle lets you know there's a problem in the engine function. This could be as simple as a loose fuel cap, an open or improperly secured trunk or door, or other problem.

The yellow triangle with an exclamation mark will typically be accompanied by a message explaining what's gone wrong. Hopefully it will be self-explanatory - such as a low reservoir for the windscreen washer system.

If it's an exclamation point inside a triangle, it's called a master warning symbol. This is the Master Warning Light symbol. If this light is on, there will likely be text displayed as well on the instrument panel, or another warning light. Look for text in particular. It could very well point out something as serious as low oil pressure. If the engine is not running, you can't very well check your gauges, but you may have lost all oil pressure or overheated the engine. Recommend you consult a mechanic familiar with your model.

possibly bad driver

According to the owners manual, there is one in a circle for the brakes, and one in a symbol of a low tire for tire pressure.

Can u post a photo? Is it in a triangle? Might be traction control.

If it looks like a deflating tire with an exclamation mark inside, its the check your tire pressure light.

If its a triangle with exclamation mark inside its the check engine light.

This is your ASR Light (Automatic Slip Regulation) If it blinks that means the system is preventing wheel spin. If it's constantly on, the system is either turned off, of there's a malfunction in the system. If no other lights are on the dash, it could be a faulty brake light switch. There are a DOUBLE recall on this part. Ever had it done ??

if it look like this http://www.postimage.org/Pq8RFN0.jpg its the esp light it means you have a fault relating to that system.you need to get a diagnostic check done,there is nothing you can do i,m afraid its a dealer or specialist job.

Could be the motor-management-warning light, but I guess it's the break-warning light. There might be too little breaking-fluid left in the lines ... A boardcomputer-readout should clarify this.

Otherwise, try parking on an ascending road with the nose pointing up, hit the hand-break and wait like 2 minutes; the light should come on. You might wanna retry it with the car's nose pointing downwards as well ... If so, definitely the breaking-fluid, otherwise probably not ;)

In any case - flashing warning light are never ok, so when you see it again and you're sure it's not just the ABS/ESP warning light, go and have your boardcomputer read-out, since it should contain useful errorcodes ..