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Home >> Jaguar >> 2011 >> XK 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 56 (Brake System - General Information -- XK/X150) >> Brake System - General Information >> Brake System >> Diagnosis And Testing >> Symptom Chart

Symptom Chart

WARNING: This page does not describe the selected car, but rather 12 other vehicles, including the 2015 Jaguar XKR-S, 2015 Jaguar XKR, 2015 Jaguar XK, 2014 Jaguar XKR-S, and 2014 Jaguar XKR. However, it is still accessible from the selected car via links, so may be relevant.
SYMPTOM POSSIBLE SOURCES ACTION
Brakes noisy
  • Brake pads.
  • Brake discs.
Vibration when brakes are applied
  • Wheels require balancing.
  • Wheel hub nuts.
  • Brake caliper mounting bolts.
  • Brake pads.
  • Foreign material/scratches/corrosion on brake disc contact surfaces.
  • Excessive brake disc thickness variation.
  • Excessive brake disc runout.
  • Wheel bearing wear or failure.
  • Suspension bushing wear or
  • Suspension bushing wear or failure.
  • Steering bushing wear or failure.
The brakes pull or drift
  • Tire pressures/wear.
  • Brake calipers.
  • Brake pads.
  • Brake discs.
  • Wheel alignment adjustment.
  • Wheel bearing.
  • Suspension bushings and ball joints.
The pedal feels spongy
  • Air in brake system.
  • Leak in hydraulic system.
  • Brake booster/master cylinder.
  • Brake pads.
The pedal goes down fast
  • Air in brake system.
  • Leak in hydraulic system.
  • Brake booster/master cylinder.
  • Brake pads.
The pedal goes down slowly
  • Air in brake system.
  • Brake booster/master cylinder.
Excessive brake pedal effort
  • Brake pads.
  • Brake booster.
Brake lockup during light brake pedal force
  • Brake pads.
  • Brake calipers.
Brakes drag
  • Parking brake control applied/malfunction.
  • Seized parking brake cables.
  • Seized caliper slide pins.
  • Seized brake caliper.
  • Brake booster.
  • Pedal gear.
Excessive/Erratic brake pedal travel
  • Hydraulic system.
  • Brake pads.
  • Brake discs.
  • Hub and bearing assembly.
The red brake warning indicator is always on
  • Fluid level.
  • FILL the system to specification. CHECK for leaks.
  • Brake fluid level sensor.
  • Parking brake control.
  • For additional information, Refer to: Parking Brake (Parking Brake and Actuation - Vehicles With: Carbon Ceramic Brakes, Diagnosis and Testing).
  • Electrical circuit.
  • For additional information, Refer to: Parking Brake (Parking Brake and Actuation - Vehicles With: Carbon Ceramic Brakes, Diagnosis and Testing).
Slow or incomplete brake pedal return
  • Brake pedal binding.
  • Brake booster/master cylinder.
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