Seal in brake caliper is leaking and needs replacement Flexible brake line to the caliper is leaking and needs replacement
I'm going to say there's probably a hole in your brake line.
Hub seal is leaking
Most likely brake fluid. Check the master cylinder level.
coolant, motor oil, power steering fluid, transmission fluid, brake fluid?
the brake cylinder is bad or the bleeder valve isn't shut all the way.
No oil leak is normal. I would suspect you have a leaking wheel cylinder or caliber. What you are seeing may be brake fluid. Have this looked at ASAP. Make sure that this not just brake dust and water. If it is an oil leak it most likely is brake fluid, and it needs repaired ASAP.
Pour it into the brake fluid reservoir. It is in front of the brake booster. If you don't know where that is then take it to a service center before you have major problems.
You need to find out what's leaking and replace it before you have an accident.
Expanding the calipers (when you put in new brake pads) can cause the master cylinder reservoir to overflow. Before attempting to perform repairs, make certain it isn't simply leaking out of the master cylinder reservoir. HOWEVER... If it's leaking at the left front wheel, you'll probably need to replace the caliper. Sometimes a hydraulic cylinder, such as the caliper cylinder, can become pitted and when the rubber seal of the piston crosses the pitted surface it can leak brake fluid. Simple answer, find out where it's leaking, it may be nothing, it may be something to repair.
Sticking brake calipers. This can be caused by moisture in the brake fluid which will cause the calipers to rust. Replace the calibers and replace all the brake fluid. It can also be caused by driving with your foot on the brake.
brake light is on from either ur parking brake switch(shorted, switch stuck) or low brake fluid if fluid is low its very likely ur need front brake pads.