2004 Jetta brake problem

The brake light will come on if your brake fluid level falls below a certain point, indicating you're losing brake fluid. Grinding noise indicates your brake pads are shot. Get to a brake shop.

If the fluid was really low you most likely need brake pads replaced, if the pedal is soft you need a master cylinder.

If your ABS light is light it could mean several things. First check to make sure that your parking break is all the way down. Secondly, it could be cause by you not having enough fluid for your breaks.

That brake light also indicates when your brake fluid is low. Check your brake fluid level in the master cylinder reservoir and add some if necessary. Also, check the braking system for leaks.

Just for giggles... inspect the brake pads. The light is designed to come on when your brake pads are getting thin as well as low fluid level and emergency brake use.

look under the front of the rubber boot that covers the bottom of the park brake handle, u will see a nut on the end of the park brake cable, tighten it until u reach the proper adjustment.

Check the float that is in your brake fluid resevoir, usually the brake light comes on when the fluid is low or the float is stuck down. Also your brake light might be tied in with your emergency brake hand or foot pedal whichever kind you have. Check this switch also. I hope this helps

check and make sure brake fluid is full, if so then the emergency brake has a switch on it that will make the brake light come on. to check this get in vehicle and push emergency brake then release it then take your hand and wiggle the emergency brake peddle and see if the light comes on and off. if so then the peddle is not comming all the way up against the switch this may be solved by just pulling up on the peddle each time the emergency brake is released,

1st check the easy things, that would be the brake fluid level. If it's low, the light will go on. Next check the emergency brake, if it's on slightly, the light can come on. Your fluid should be changed when u have a brake job done, the light wouldn't be on for that, only if there is a problem w/ the system. Check this out asap, as it can be unsafe to drive. If adding fluid to the proper level results in the light going out, make sure to check the level daily to make sure u don't have a leak in the system (and u can look under the car for signs of a leak-drips stains puddles). As your brakes wear down, it is normal to have to add fluid, but only a small amount maybe a couple of times between brake jobs. If u have the brakes done in the future, have them flush out the brake system. This is overlooked most of the time, and can result in problems down the road w/ corrosion of calipers and brake cylinders, which lead to premature wear on the brake pads and shoes. Let me know how u make out.

you can take it to autozone they will check it for free and tell you what the problem is and which sensor and which wheel its on ...that way a shop cant tell you you need other parts you dont need. hopes this helps.........