1. Caliper Piston Issue: If the caliper piston is not retracting properly, it can cause the brake pads to continuously rub against the disc, resulting in excessive friction, heat buildup, and smoking.
2. Damaged or Seized Caliper: A damaged or seized caliper can prevent the brake pads from retracting, causing continuous friction and overheating.
3. Faulty Brake Hose: A faulty brake hose can obstruct the return of brake fluid, causing the brake pads to remain engaged and preventing heat dissipation. This can lead to overheating and smoking.
4. Worn Out Brake Pads: Worn-out brake pads have reduced material to absorb friction, causing increased heat buildup. Additionally, the metal backing plate of the brake pads may come in contact with the disc, generating excessive friction and heat.
5. Stuck or Damaged Brake Pad Pin/Guide: Brake pads are guided by pins or guides to slide freely. If these components are stuck or damaged, it can cause uneven pad wear, leading to excessive friction and overheating on one side.
6. Faulty Wheel Bearing: A faulty or damaged wheel bearing can increase friction between the rotating components, causing the disc brake to overheat.
7. Stuck Brake Piston: If a brake caliper’s piston seizes, it can cause uneven pressure on the brake pads which is likely to cause only one wheel to overheat.
8. Parking brake misalignment: In some vehicles the parking brake is connected to the rear brakes, if the parking brake is not fully released or if there is a fault in the mechanism that releases it, it can cause one brake to be partially engaged, which can overheat that brake.
It is important to inspect and address the cause promptly to prevent further damage and ensure safe braking. If you notice any unusual behavior, such as excessive heating or smoking, it is recommended to have the vehicle inspected by a qualified mechanic or technician.
