Brake Pad Wear Sensors

Rear Brake Pad Wear Sensor.
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 alert the driver when the friction material reaches its minimum safe operating thickness. Manufactured to OE specifications for fit, function and reliability, this sensor helps ensure timely brake maintenance and supports safe braking performance.  



Fits:

• Porsche 928S4 5.0L 1989-92
• Porsche 928GT 5.0L 1989-91
• Porsche 928GTS 5.4L 1992-95 

Installed directly into the rear brake pad assembly, the sensor continuously monitors brake pad wear and communicates with the vehicle's brake warning system. When the brake pads wear down to a predetermined limit, the sensor activates the dashboard brake wear warning light, notifying 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 indicator when replacement is required.
• Provides early warning of rear brake maintenance needs.
• 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 brake system maintenance.

Symptoms Of Wear Or Failure:

• Brake wear warning light remaining illuminated.
• Intermittent brake wear warning messages.
• False brake wear alerts 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 demanding conditions and are exposed to heat, brake dust, moisture, road debris and constant vibration. In many applications, the sensor is designed to wear alongside the brake pads and should be replaced whenever new rear brake pads are installed to ensure continued monitoring accuracy.
• A damaged or malfunctioning sensor can provide inaccurate brake wear information, potentially resulting in unnecessary warning lights or failure to alert the driver when brake pads require replacement. If brake pads wear beyond their service limit, braking performance can be reduced and costly damage to the 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 rear brake servicing and maintenance.

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Related, superseded, cross reference or alternative numbers for comparison.

92861236301

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Brake pad wear sensors help to indicate if your brake pads need changing. These should normally be replaced when replacing your brake pads.




Porsche 928 1992-95 Front

Price shown is for each wire sensor.

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Related, superseded, cross reference or alternative numbers for comparison.

92861236601

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Front Brake Pad Wear Sensor 
Sold each - 2 required per car

Maintain the safety and performance of your Porsche braking system with this OE Match Front Brake Pad Wear Sensor 92861236601, designed specifically for Porsche 928 models produced between 1992 and 1995. This sensor forms an important part of the factory brake monitoring system, providing an early warning when the front brake pads have reached their minimum service thickness.

Fits:

• Porsche 928GTS 5.4L 1992-95  

Installed directly into the brake pad assembly, the sensor monitors brake pad wear and activates the dashboard brake warning light when replacement is required. This simple but essential component helps prevent excessive brake wear, protects expensive brake discs and ensures the braking system continues to perform at its best.

For high-performance grand touring models such as the later Porsche 928 S4, GT and GTS, maintaining the brake wear monitoring system is essential for both safety and reliability.

What Does a Brake Pad Wear Sensor Do?

The brake pad wear sensor continuously monitors the thickness of the brake pad friction material.

As the brake pad wears down, the sensor eventually makes contact with the brake disc and triggers the brake wear warning circuit, alerting the driver that replacement is required.

A correctly functioning sensor helps:

• Monitor brake pad condition
• Provide early brake wear warnings
• Protect brake discs from damage
• Improve maintenance scheduling
• Support safe braking performance
• Reduce unexpected repair costs
• Maintain factory brake monitoring functionality

The sensor provides valuable advance notice before brake 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 debris.

Common causes of failure include:

• Normal brake pad wear
• Sensor activation due to worn pads
• Damaged sensor wiring
• Corrosion within electrical connections
• Heat-related deterioration
• Physical damage during brake servicing
• Water or dirt contamination
• Age-related component degradation

Because the sensor is designed to function alongside the brake pads, replacement is typically recommended whenever new brake pads are fitted.

When Should a Brake Pad Wear Sensor Be Replaced?

The sensor should be replaced whenever it has been activated, damaged or when new brake pads are installed.

Common symptoms include:

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

Replacing the sensor at the same time as the brake pads helps ensure the brake monitoring system remains fully functional.

Why Replacement Matters

A functioning brake pad wear sensor helps maintain braking safety and reduces the risk of costly brake system repairs.

Benefits include:

• Accurate brake wear monitoring
• Reliable warning light operation
• Improved vehicle safety
• Protection of brake discs
• Reduced maintenance costs
• Better servicing accuracy
• Enhanced braking system reliability
• Long-term brake system protection

For Porsche 928 owners, maintaining the factory brake wear warning system helps preserve both driving confidence and vehicle safety.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

92861236601

The product you are viewing cross references to these numbers

Cable holder brake warning wire. 

Fits front and rear brakes



and

Fits:
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998
Porsche 944S2 - 1987 to 1991
Porsche 944 turbo - 1985 to 1991
Porsche 968 - 1992 to 1995
Porsche 928 S4 / GTS - 1987 to 1992

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Diagram ref no 21

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

92861236100

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