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- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
The OE Match Rear Brake Pad Wear Sensor is a high-quality replacement braking system component designed to monitor the condition of the rear brake pads and provide a warning when the friction material reaches its minimum safe thickness. Manufactured to OE specifications for fit, performance and reliability, this sensor plays a vital role in maintaining safe braking performance and ensuring timely brake maintenance.
Fits:
- Porsche 928S2 4.7L 1986
- Porsche 928S4 5.0L 1987-88
Installed directly into the rear brake pad assembly, the sensor forms part of the vehicle's brake wear monitoring system. When the brake pads wear down to a predetermined service limit, the sensor activates the dashboard brake wear warning light, alerting the driver that rear brake pad replacement is required.
What This Product Does:
- Monitors rear brake pad wear throughout the service life of the brake pads.
- Activates the brake wear warning light when brake pads require replacement.
- Provides early notification of brake maintenance requirements.
- Helps prevent excessive brake pad wear.
- Protects brake discs from damage caused by worn brake pads.
- Supports safe and effective braking performance.
- Assists with preventative maintenance of the braking system.
Symptoms Of Wear Or Failure:
- Brake wear warning light remaining illuminated.
- Intermittent brake wear warning messages.
- False brake wear warnings despite adequate brake pad thickness.
- No warning light when brake pads are excessively worn.
- Damaged, broken or frayed sensor wiring.
- Corrosion or physical damage to the sensor body.
- Brake monitoring fault codes stored within the vehicle system.
- Warning light remaining active after brake pad replacement.
Why Replacement Matters:
- Rear brake pad wear sensors operate in harsh conditions and are constantly exposed to brake dust, heat, moisture, road debris and vibration. In many applications, the sensor is designed to wear alongside the brake pads and should be replaced whenever new rear brake pads are fitted to maintain accurate wear monitoring.
- A damaged or malfunctioning sensor can provide inaccurate information about brake pad condition, potentially resulting in unnecessary warning lights or failure to alert the driver when brake service is required. If brake pads wear beyond their safe operating limit, braking performance can be compromised and costly damage to brake discs may occur.
- Replacing a worn rear brake pad wear sensor restores accurate brake wear monitoring, ensures proper operation of the dashboard warning system and helps maintain safe braking performance. An OE Match replacement provides factory-style fitment, dependable operation and long-term reliability, making it an essential component during brake servicing and maintenance.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92861231304
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
Front & Rear Brake Pad Wear Sensor
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Maintain the safety and performance of your Porsche braking
system with this OE Match Brake Pad Wear Sensor. Suitable for front
and rear brake applications on selected Porsche 986 Boxster, Porsche 996,
Porsche 996 turbo and Porsche 997 models, this sensor forms a vital part of the
factory brake wear monitoring system.
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
The brake pad wear sensor continuously monitors brake pad thickness and alerts the driver when replacement is required. By providing an early warning before the friction material becomes excessively worn, the sensor helps protect brake discs, maintain braking performance and prevent costly repairs.
For high-performance Porsche sports cars, maintaining the brake wear monitoring system is essential to ensure optimum braking efficiency and vehicle safety.
What Does a Brake Pad Wear Sensor Do?
The brake pad wear sensor is fitted directly into the brake pad and monitors the remaining friction material.
As the brake pad wears 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 sensor serves as an important preventative maintenance tool, helping owners replace brake pads before braking performance is affected.
Why Do Brake Pad Wear Sensors Fail?
Brake wear sensors operate in a demanding environment exposed to heat, vibration, moisture and road contamination.
Common causes of failure include:
- Normal brake pad wear
- Sensor activation after pad wear reaches its limit
- Damaged wiring
- Corrosion in electrical connections
- Heat-related deterioration
- Physical damage during brake servicing
- Water ingress
- Age-related material degradation
Because the sensor is designed to operate alongside the brake pads, it is often recommended to replace the sensor whenever new brake pads are installed.
When Should a Brake Pad Wear Sensor Be Replaced?
Brake wear sensors should be replaced whenever they have been activated, damaged or when brake pads are renewed.
Common signs include:
- Brake wear warning light illuminated
- Intermittent brake warning messages
- Broken or damaged sensor wiring
- False brake wear warnings
- Corroded sensor connectors
- Sensor damage during brake servicing
- Brake pad replacement due to wear
Replacing the sensor during brake maintenance helps ensure the brake monitoring system continues to function correctly.
Why Replacement Matters
A functioning brake wear sensor helps protect your braking system while maintaining safety and reliability.
Benefits include:
- Accurate brake pad monitoring
- Reliable warning light operation
- Improved vehicle safety
- Protection of brake discs
- Reduced maintenance costs
- Better service planning
- Improved braking system reliability
- Long-term braking system protection
For Porsche owners, maintaining the brake wear monitoring system helps preserve the performance, safety and confidence expected from the marque.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99661236501
The product you are viewing cross references to these numbers
- Porsche 996 GT3 MKII 2003>>
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Turbo 2010-13
- Porsche Carrera GT 2003-06
The brake pad wear sensor harness serves as the electrical link between each brake pad wear sensor and the vehicle’s signal/monitoring circuitry (ABS/ECU). As the pads wear down to a threshold level, the sensor completes a circuit that triggers a warning light on the dash, alerting the driver that pad replacement is due.
Sold each.
Fits:
Porsche 996 GT3 MKII 2004 - 2005 Front & Rear
Porsche 997.1 C4 2005 - 2008 Front Caliper
Porsche 997.2 C4 2009 - 2012 Front Caliper
Porsche 997 Turbo / GT2 2007 - 2013 Front Caliper
Porsche GT 2004 - 2006 Rear Caliper
Function: This harness routes and secures the sensor wiring safely along the suspension and chassis to avoid interference, chafing, or damage. The OE Match harness preserves correct electrical paths and protects the sensor signal from interruption - essential for accurate brake pad condition monitoring.
Brake pad wear sensor systems rely on both the sensor element and the wiring harness to deliver accurate warnings. A damaged or broken harness can interrupt the signal even with new sensors fitted, leading to false “OK” readings or no warning when pads are worn. Replacing the wiring harness with an OE Match unit ensures reliable signal transmission and correct integration with the vehicle’s monitoring systems, helping prevent brake damage or unexpected failures.
When to replace.
Replace this harness if you notice any of the following:
• Brake wear warning lamp stays off despite worn pads
• Intermittent or false pad wear warnings
• Visible frayed wiring, broken connectors, or chafing
• Previous repairs with generic wiring failed
• During brake pad or ABS sensor system servicing
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99761267701
The product you are viewing cross references to these numbers