A seized brake caliper on your 2018 Nissan Pathfinder at 100,000 miles creates a safety concern requiring prompt attention. Seized calipers cause uneven braking, premature pad and rotor wear, and in severe cases, can cause the vehicle to pull dangerously during braking.
What Causes Calipers to Seize
Caliper slide pins corrode and stick, preventing caliper movement. Piston seals deteriorate, allowing the piston to stick in the bore. Brake fluid contamination causes internal corrosion. Road salt and moisture accelerate corrosion in northern climates. Lack of caliper service during brake jobs contributes to eventual seizure.
Symptoms of Seized Caliper
Vehicle pulls to one side during braking. Burning smell from overheated brake. One wheel significantly hotter than others after driving. Premature pad wear on one side. The affected wheel may drag even when not braking, reducing fuel economy and causing heat buildup.
Diagnosis Process
After driving, carefully check wheel temperature (using IR thermometer if available). The wheel with the seized caliper will be notably hotter. Inspect caliper visually for the piston or slides to be stuck. Check pad wear - uneven wear indicates caliper issues.
Repair Approach
If caught early, slide pin cleaning and lubrication may restore function. Seized pistons usually require caliper replacement. Replace calipers in pairs for balanced braking. Consider brake fluid flush to remove contamination that may have caused the seizure. Expect $300-500 per caliper installed.