Table of contents: Too much free travel of the brake… ↓ The brake pedal is pressed down far… ↓ The braking effect is reduced, the… ↓ Poor braking action despite high… ↓ The brake mechanisms of the wheels… ↓ The brakes work by themselves ↓ Brakes heating up while driving ↓ Brake rattling ↓ Brake pads do not come off the brake… ↓ Uneven wear of the linings ↓ Wedge-shaped wear of brake linings ↓ Squeaking brakes ↓ Brake pulsation ↓ ABS warning light comes on while… ↓
Too much free travel of the brake pedal
Partial or complete wear of brake linings
Replace the brake pads.
Failure of one of the brake circuits
Check the brake circuits for brake fluid leaks.
The brake pedal is pressed down far and springs
Air in the brake system
Remove air from the brake system.
Too little brake fluid in the expansion tank
Add brake fluid, bleed the brakes.
Formation of steam bubbles
Most often after a heavy load on the brakes, for example, on a steep descent.
The braking effect is reduced, the brake pedal is pressed to the stop
Leaky pipeline
Tighten the nuts at the connection points or replace the pipeline.
Damaged seal on the master cylinder or wheel cylinder
Renew the seal. In the master cylinder, replace the internal parts, replace the master cylinder if necessary.
Poor braking action despite high force applied to the brake pedal
Oily brake pads
Update your overlays.
Incorrect or hardened brake lining
Update your pads, use only original pads from the vehicle manufacturer.
The brake booster is faulty, the booster hose is defective and porous
Check the booster and booster hose.
The brake pads are worn out
Replace the pads.
The brake mechanisms of the wheels do not act simultaneously (the brakes "pull" in one direction)
Tire pressure is not as prescribed
Check the tire pressure and bring it to normal.
Uneven tire wear
Replace worn tires.
Oily brake pads
Update your overlays.
Brake linings of different brands are installed on one bridge
Replace the pads, use only original pads from the vehicle manufacturer.
Poor condition of the working surface of the brake lining
Replace the pads.
Contaminated caliper cavities
Clean the seating and guide surfaces of the brake pads of the caliper.
Wheel cylinder corrosion
Replace the brake caliper.
Uneven wear of brake lining
Update your brake pads (both wheels) and check the caliper stroke.
The brakes work by themselves
The equalizing hole in the master brake cylinder is clogged
Clean the cylinder and replace its internal parts in a workshop.
The clearance between the pushrod and the piston of the master brake cylinder is too small
Check the gap.
Brakes heating up while driving
The equalizing hole in the master brake cylinder is clogged
Clean the master cylinder and have its internal parts replaced at a workshop.
Heavy brake action
Lubricate the moving parts of the drum brake. Overhaul the caliper (in the workshop).
Brake rattling
Incorrect brake pads
Replace the pads. Use only the original pads from the vehicle manufacturer.
The brake disc is covered with corrosion in places
Clean the disc thoroughly.
The brake disc has lateral runout
Modify the disk or replace it.
Brake pads do not come off the brake disc
Wheel cylinder corrosion
Overhaul the caliper and replace if necessary.
Uneven wear of the linings
For disc brakes only
Incorrect brake pads
Replace the pads. Use only the original pads from the vehicle manufacturer
The caliper is dirty
Clean the caliper cavities.
Heavy stroke of wheel cylinder pistons
Expand the pistons.
Brake system leak
Check the brake system for leaks.
Wedge-shaped wear of brake linings
The brake disc does not rotate parallel to the caliper
Check the caliper mating surface.
Caliper corrosion
Remove corrosion and contamination from the calipers.
Squeaking brakes
Often attributed to atmospheric influences (humidity)
No intervention is required if the brakes squeal after a long period of parking in high humidity, but do not recur after the first braking.
Incorrect brake pads
Replace the pads. Use only the original pads from the vehicle manufacturer.
The brake disc does not rotate parallel to the caliper
Check the caliper mating surface.
The caliper cavities are dirty
Clean the caliper cavities.
Brake pulsation
ABS action
This is a normal phenomenon and does not require intervention.
For disc brakes only
Lateral runout of the brake disc or too large tolerance on the thickness of the disc
Check the runout and thickness tolerance of the disc. Rework or replace the disc.
The brake disc does not rotate parallel to the caliper
Check the caliper mating surface.
ABS warning light comes on while driving
Low battery power (voltage less than 10 volts)
Check the battery voltage. Make sure that the battery charge light goes out after the engine starts. Otherwise, check the condition of the V-belt and the alternator.
Please read the recommendations regarding the vehicle's active safety systems ABS/EBV/EDS/ASR/ESP.
Check the ground (-) wire terminal from the hydraulic unit return pump and make sure it is securely fastened and not corroded.
ABS malfunction
Contact a workshop to have the ABS checked.