Symptom Chart: Notes

SYMPTOM	POSSIBLE CAUSE	ACTION
Brakes noise	Brake pads Brake discs	GO to PINPOINT TEST A .
Premature brake pad wear	Front/rear left/right brake pads excessively worn Front/rear left/right brake pads seized in the brake caliper Sticking or partially seized brake caliper(s)	Check that the front and rear brake discs and pads are within the specified service wear limit. REFER to: SPECIFICATIONS GO to PINPOINT TEST F .
Uneven brake pad wear	Front/rear left/right brake pads seized in the brake caliper Sticking or partially seized brake caliper(s)	GO to PINPOINT TEST F .
Vibration when brakes are applied	Wheels/tires out of balance Wheel hub nuts loose Brake caliper mounting bolts loose Brake pads Foreign material/scratches/corrosion on brake disc contact surfaces Excessive brake disc thickness variation Wheel bearing wear or failure Suspension bushes wear or failure Steering bushes wear or failure	GO to PINPOINT TEST G .
The brakes pull or drift	Tire pressures/wear Brake calipers Brake pads Brake discs Wheel alignment adjustment Wheel bearing Suspension bushes and ball joints	GO to PINPOINT TEST H .
The pedal feels spongy	Air in brake hydraulic system Leak in hydraulic system Brake booster/master cylinder Brake pads	GO to PINPOINT TEST I .
The pedal goes down fast	Air in brake hydraulic system Leak in hydraulic system Brake booster/master cylinder Brake pads	GO to PINPOINT TEST J .
The pedal goes down slowly	Air in brake hydraulic system Brake booster/master cylinder	GO to PINPOINT TEST G .
Excessive brake pedal effort required	Brake pads Brake booster	GO to PINPOINT TEST H .
Brake lockup during light brake pedal force	Brake pads Brake calipers	GO to PINPOINT TEST I .
Brakes drag	Park brake applied/malfunction Seized brake caliper slide pins Seized brake caliper Brake booster Pedal gear	GO to PINPOINT TEST J .
Excessive/Erratic brake pedal travel	Hydraulic system Brake pads Brake discs Hub and bearing assembly	GO to PINPOINT TEST K .
The red brake warning indicator is always on	Fluid level Brake master cylinder fluid level sensor Park brake control Electrical circuit	Fill the system to specification. Check for leaks. Install a new brake master cylinder fluid reservoir as required. Refer to the relevant article in the repair information for electric park brake control module and circuit tests
Slow or incomplete brake pedal return	Brake pedal binding Brake booster/master cylinder	GO to PINPOINT TEST L .
NOTE: 355 mm brakes only Knock and creak noise when braking and maneuvering at low speed	Contact noise of brake pad moving within caliper during light braking and steering	NOTE: For any vehicles undergoing this repair, it will be necessary to make sure that F-Type brake pads are installed to all subsequent pad changes Install F-Type front brake caliper and pad assembly in pairs
Anti-lock Brake System (ABS) control module noise and/or vibration through the brake pedal	Anti-lock Brake System (ABS) control module pump self check Anti-lock Brake System (ABS) control module operating when adaptive cruise control is active Brake pipes from the Anti-lock Brake System (ABS) hydraulic control unit to the wheel insecure	If the noise occurs at low vehicle speed before the brake pedal is pressed, or occurs on the first drive cycle after a sleep cycle, then the noise is likely to be the ABS pump self check. This is normal operation and is NOT a fault If the vehicle has adaptive cruise control and the noise occurs when adaptive cruise control is active, the Anti-lock Brake System (ABS) control module will emit a low level noise when applying the brakes. This is normal operation and is NOT a fault If the noise is louder than expected, compare the noise to another vehicle of the same specification. Check the security of the brake pipes from the Anti-lock Brake System (ABS) hydraulic control unit to the wheels. Make sure all pipes are secure and not making contact with each other, the vehicle body or vehicle bulkhead. Rectify as necessary
	Brake pedal pressed with enough force to activate Anti-lock Brake System (ABS) intervention	Confirm the customer issue and the road surface the issue occurred. If the brake pedal is pressed with enough force to activate an Anti-lock Brake System (ABS) intervention on a loose surface, a noise from the Anti-lock Brake System (ABS) control module and vibration through the brake pedal may be evident. This is normal operation and is NOT a fault
	Anti-lock Brake System (ABS) brake booster vacuum assistance issue	Using the Jaguar Land Rover approved diagnostic equipment, check the Anti-lock Brake System (ABS) control module for low vacuum pressure or vacuum sensor related DTCs. Repair as necessary Check the integrity of the brake booster vacuum system. Rectify as necessary
	Anti-lock Brake System (ABS) Wheel speed sensor issue	Faulty wheel speed sensor signal. Using the Jaguar Land Rover approved diagnostic equipment, check the Anti-lock Brake System (ABS) control module for wheel speed sensor related DTCs. Repair as necessary Make sure all wheel speed sensors are clean and securely installed. Rectify as necessary Check all wheel bearings for play. Rectify as necessary Check all Anti-lock Brake System (ABS) reluctor rings are clean and NOT damaged. Rectify as necessary
Brake fluid level low with fluid residue evident on the Anti-lock Brake System (ABS) control module Hydraulic Control Unit (HCU)	Component leaking above the Anti-lock Brake System (ABS) control module Brake pipe(s) damaged/deteriorated Brake pipe nut to the Anti-lock Brake System (ABS) control module Hydraulic Control Unit (HCU) insecure or cross threaded	GO to PINPOINT TEST Q .