Stuck Brake Caliper
A stuck brake caliper keeps brake pressure applied or prevents the pads from releasing fully. It can cause pulling, smoke, burning smell, fast pad wear, and overheated rotors.
Can I Drive?
fix-soon
Most Likely Causes
- 1
Seized caliper slide pins
Dry or corroded slide pins prevent caliper movement.
- 2
Sticking caliper piston
Corrosion or damaged seals can keep the piston from retracting.
- 3
Collapsed brake hose
A hose can act like a one-way valve, holding pressure at the caliper.
How to Diagnose It
- 1
Compare wheel heat
A much hotter wheel after a short drive points to dragging brake. Use caution.
Tool: Infrared thermometer
- 2
Inspect pad wear side to side
Uneven inner/outer pad wear often points to caliper or slide issues.
Tool: Jack stands, inspection
- 3
Open bleeder briefly during diagnosis
If the wheel frees when bleeder opens, trapped hydraulic pressure or hose issue is possible.
Tool: Line wrench
How to Fix It
Clean/lubricate slide pins
Use correct high-temperature brake grease.
Replace caliper or hose
Replace components that remain stuck after testing.
Replace damaged pads/rotor
Overheated brakes often damage friction surfaces.
Mistakes to Avoid
- Do not replace expensive parts until basic checks confirm the fault. Many symptoms have simple electrical, fluid, fuse, or connection causes.
- The symptom comes back after a basic repair
- Warning lights or fault codes are present
- The vehicle is unsafe to road-test
- The repair requires vehicle-specific diagnostic equipment