Want this question answered?
Probable causes: Low or no fluid in reservoir; Worn brake pads/shoes; Air in brake lines; Leaking brake line.
The most probable cause is that the brake light switch is out of adjustment.
It probably means that either the brake fluid is leaking or the brakes are failing. You should get it checked out. Can be that the master cylinder is low of brake fluid. Unless you have a leak this is a sign that your brake pads more than likely need replacing. As the pads wear the fluid level goes down. Inspect your brake pads.
Hardness in the brake pedal can because by low brake fluid. Air in the brake lines can also cause the pedal to push hard.
Low brake fluid and the parking brake being on are the two most common causes.
Bad brake switch. Typically located at the top of the brake pedal.
Check your fuse, bulbs and the probable culprit the brake switch attached to the brake pedal. Mine were completely out on a 91 Town car and it was a bad switch. I hope this helps you.
The probable cause of the brake lights not working on your Renault is the brake light switch. The brake light switch can be found under the dashboard by the foot pedal.
air coming out of the brake lines... that is if its a truck. if you aply the parking brake.
A faulty power brake vacuum booster could do that.
A short in the Brake light circuit? Bad brake light switch?
possibly a bad brake switch located on the brake pedal assy