Brake pad wear sensor. Porsche 997 C2 / Boxster 987 / Cayman 987C  ❭  99761275

Front Brake Pad Wear Sensors - Sold each

Maintain the safety and performance of your Porsche braking system with these OE Match Front Brake Pad Wear Sensors. Designed for Porsche 997 Carrera, Porsche 987 Boxster S and Porsche 987 Cayman S models, these sensors form a critical part of the factory brake wear monitoring system, providing an early warning when front brake pads approach their minimum service thickness.

Fits:

• Porsche Boxster 987 S 3.2/3.4L 2005-08/08
• Porsche Boxster 987 MKII 2.9L 2009-12
• Porsche Boxster S 987 MKII 3.4L 2009-12
• Porsche 997 MK1 Carrera 2 3.6L 2005-08
• Porsche Cayman S 3.4L 987C 2005-08
• Porsche Cayman 2.9L 987C MKII 2009-12
• Porsche Cayman S / R 3.4L 987C MKII 2009-12

Mounted directly within the front brake pad assembly, the sensors continuously monitor brake pad wear and trigger the dashboard brake warning light when replacement is required. This allows owners to schedule brake maintenance before braking performance is affected or expensive brake disc damage occurs.

For high-performance Porsche sports cars, maintaining a fully operational brake wear monitoring system is essential for preserving braking efficiency, safety and long-term reliability.

What Do Brake Pad Wear Sensors Do?

Brake pad wear sensors monitor the remaining thickness of the brake pad friction material throughout its service life.

As the brake pads wear down, the sensor eventually contacts the brake disc and completes an electrical circuit that activates the brake wear warning light on the dashboard.

A properly functioning sensor helps:

• Monitor brake pad condition
• Provide early brake wear warnings
• Prevent excessive brake pad wear
• Protect brake discs from damage
• Improve maintenance planning
• Support safe braking performance
• Maintain factory brake monitoring functionality

The sensors act as a valuable preventative maintenance feature, helping avoid unnecessary brake system damage.

Why Do Brake Pad Wear Sensors Fail?

Brake wear sensors are exposed to significant heat, vibration, moisture and road contamination during normal use.

Common causes of failure include:

• Normal brake pad wear
• Sensor activation after reaching wear limits
• Damaged wiring
• Corrosion within connectors
• Heat-related deterioration
• Physical damage during brake servicing
• Water ingress Age-related material fatigue

Because the sensor is designed to work alongside the brake pads, replacement is normally recommended whenever new brake pads are installed.

When Should Brake Pad Wear Sensors Be Replaced?

Brake wear sensors should be replaced whenever they have been activated, damaged or during brake pad replacement.

Common symptoms include:

• Brake wear warning light illuminated
• Intermittent brake warning messages
• Damaged or broken sensor wiring
• False brake wear warnings
• Corroded electrical connections
• Sensor damage during brake servicing
• Front brake pad replacement due to wear

Replacing the sensors during routine brake maintenance ensures the warning system remains fully operational.

Why Replacement Matters

A functioning brake wear monitoring system helps maintain both safety and braking performance.

Benefits include:

• Accurate brake pad monitoring
• Reliable warning light operation
• Improved braking safety
• Protection of brake discs
• Reduced maintenance costs
• Better service planning
• Improved braking system reliability
• Long-term component protection

For Porsche owners, replacing worn brake wear sensors helps maintain factory braking standards and driving confidence.

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