Most vehicles have master cylinder reservoirs that you can see the fluid through. The side of the reservoir has a high and low fluid mark on it.
Fill the master cylinder to the top.
Low brake fluid level or a stuck brake fluid level sensor. Check the brake fluid level and if it is ok, tap on the master cylinder reservoir with your finger
Yes , either your parking brake is on , or your brake fluid level in your brake master cylinder in your engine compartment is low
Four Possible reasons... Low brake fluid - check the brake fluid level in the master cylinder Emergency brake is on - check emergency brake Low brake fluid pressure - such as a broken brake line or a bad wheel cylinder. Check the master cylinder to see if it is empty. If you add fluid and pump the pedal you will probably see brake fluid on the ground or on the inside of the tires. Possibly a bad master cylinder. - The fluid will stay full but you will have no or little brake pressure. Could be air in the system as well. BE CAREFUL If you happen to add power steering fluid or transmission fluid to the master cylinder instead of brake fluid you will destroy the system. Make sure you use ONLY brake fluid and clean the master cylinder cap off with a clean rag first so no dirt gets into the braking system.
If you mean the " BRAKE " light in your dash , that means your brake fluid level in the brake master cylinder is LOW . The brake master cylinder is located in the engine compartment on the drivers side
Check to see if the brake fluid level in your brake master cylinder ( in your engine compartment ) is low , if the brake fluid level is low or your parking brake is on the brake light in your gauge cluster will come on
More than likely low brake fluid level in the master cylinder. Check it.
The brake fluid master cylinder resivoir is located on the drivers side next to the firewall. Look at it and you can see the level.
Either your parking brake is on or the BRAKE FLUID level is LOW in the brake master cylinder
If the parking brake isn't on , check the brake fluid level in the brake master cylinder in the engine compartment and see if it is low
Is the brake fluid level low in your brake master cylinder in the engine compartment ?
Gradual Loss of brake pedal height (pedal sinks to floor)? but fluid level proper--internal leak Loss of brake fluid? Back of master cylinder (where is attaches to booster) wet with brake fluid? External Remove master cylinder and see if booster has fluid in bottom (bad real seal)