- This is a common cause of brake power loss in the Jaguar Sovereign, especially if the car is equipped with a vacuum-assisted brake booster. Check for any leaks in the vacuum lines, particularly those that connect the brake booster to the engine or intake manifold. If a leak is found, repair or replace the damaged line.
2. Master cylinder failure:
- The master cylinder is responsible for pressurizing the brake fluid and sending it to the brake calipers and wheel cylinders. If the master cylinder fails, it can cause a complete loss of brake power. Check the master cylinder for any leaks or signs of damage. If the master cylinder is faulty, it will need to be replaced.
3. Brake fluid leak:
- A brake fluid leak can cause the brake system to lose pressure and become ineffective. Check the brake fluid level in the reservoir and look for any leaks in the brake lines, hoses, or connections. If a leak is found, repair or replace the damaged component and bleed the brake system to remove any air bubbles.
4. Faulty brake pads or rotors:
- Worn-out or damaged brake pads or rotors can cause the brakes to lose their effectiveness. Inspect the brake pads and rotors for any signs of wear or damage. If the brake pads or rotors are worn or damaged, they will need to be replaced.
5. Brake caliper or wheel cylinder failure:
- A faulty brake caliper or wheel cylinder can cause a loss of brake power on one or more wheels. Check the brake calipers and wheel cylinders for any leaks or signs of damage. If a brake caliper or wheel cylinder is faulty, it will need to be replaced.
6. ABS module failure:
- If your Jaguar Sovereign is equipped with an Anti-lock Braking System (ABS), a failure in the ABS module can cause a loss of brake power. Check the ABS module for any fault codes and repair or replace the module if necessary.
