Original Porsche Part Genuine Porsche part 99761265200

Rear Brake Pad Wear Sensor - Sold each

Maintain the safety, reliability and performance of your Porsche braking system with this OE Match Rear Brake Pad Wear Sensor. Designed specifically for Porsche 997 Carrera 2S and Carrera 4S models, this sensor forms a vital part of the factory brake wear monitoring system, helping drivers monitor rear brake pad condition and schedule maintenance before braking performance is affected.


Fits:

• Porsche 997 MK1 Carrera 2S 3.8L 2005-08
• Porsche 997 MK1 Carrera 4S 3.8L 2005-08
• Porsche 997 MKII Carrera C2S 3.8L 2009-12

Installed directly into the rear brake pad assembly, the wear sensor monitors the remaining thickness of the brake pad friction material. When the pads approach their minimum service limit, the sensor activates the dashboard brake wear warning light, alerting the driver that replacement is required.

For high-performance sports cars such as the Porsche 997 Carrera S models, maintaining the brake wear monitoring system is essential for preserving braking efficiency, protecting expensive brake components and ensuring maximum driving confidence.

What Does a Brake Pad Wear Sensor Do?

The brake pad wear sensor continuously monitors brake pad thickness throughout its service life.

As the brake friction material wears down, the sensor eventually contacts the brake disc and completes an electrical circuit, triggering the brake wear warning light on the instrument cluster.

A correctly functioning sensor helps:

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

The sensor acts as an important preventative maintenance component, helping avoid costly brake repairs.

Why Do Brake Pad Wear Sensors Fail?

Brake wear sensors are exposed to extreme operating conditions including heat, vibration, moisture and road contamination.

Common causes of failure include:

• Normal brake pad wear
• Sensor activation when brake pads reach their wear limit
• Damaged wiring
• Corrosion in electrical connectors
• Heat-related deterioration
• Water ingress
• Physical damage during brake servicing
• Age-related material fatigue

As brake wear sensors are considered service items, they should be replaced whenever they become activated or damaged.

When Should a Brake Pad Wear Sensor Be Replaced?

Replacement is recommended whenever brake pads are changed or if the sensor has become damaged.

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
• Rear brake pad replacement due to wear

Replacing the sensor during brake pad replacement ensures the monitoring system continues to function correctly.

Why Replacement Matters

A functioning brake wear sensor helps maintain braking safety and protects expensive brake system components.

Benefits include:

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

For Porsche 997 owners, maintaining the brake wear monitoring system helps preserve both performance and peace of mind.

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

99761267602

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Brake pad wear sensor.
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

Brake pad wear sensor.
The purpose of a brake pad wear sensor is to monitor pad thickness. When the pad material wears to a certain point, the sensor closes a circuit or sends a signal to the vehicle's brake control module, alerting the driver to replace the pads. Built to OEM specifications, it ensures the correct connector type, length, mounting clamp interface, and resistance calibration, consistent with factory parameters. It should normally be replaced when replacing your brake pads.
Sold each.


Porsche 997 C2S MKI 2005-08 Front Caliper
Porsche 997 C2S MKII 2009>> Front Caliper

• Position on Vehicle: Mounted adjacent to the front disc brake pads, typically clipped into the caliper or pad backing plate with the sensor end extending to contact the rotor or matching pad drain hole.

• Applications: Ideal when the original wear sensor has failed, is missing, or during brake pad replacement to ensure the wear-warning circuit remains intact and fully functional.

The brake pad wear sensor is a small yet essential part of your vehicle’s safety system. When it fails or is removed, your brake pad wear monitoring may become inactive - leading to unnoticed pad depletion, increased rotor wear or even unscheduled brake failure. Replacing it ensures that when your pads reach their safe limit, you’ll receive an accurate alert and can service your brakes in time.

When and why to replace:
• The brake pad wear warning light is showing, indicating the sensor circuit has been triggered or failed.
• The sensor wiring is damaged, corroded, or the sensor itself is missing or reused excessively.
• During brake pad replacement - fitting a new sensor ensures the system remains fully functional.
• After any caliper or brake overhaul where the original sensor connection might have been disturbed.
• When using non-standard or aggressive brake pads, where ensuring the warning circuit works is particularly important.

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

997612

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

Maintain the safety and effectiveness of your Porsche braking system with this OE Match Front Brake Pad Wear Sensor, commonly referred to as the brake pad warning wire, for the Porsche 997 Carrera 4S. This important component continuously monitors brake pad wear and alerts the driver when the pads have reached their service limit.

Porsche 997 MK1 Carrera 4S 3.8L 2005-08
Porsche 997 MKII Carrera C4S 3.8L 2009-12

Installed directly into the brake pad, the wear sensor forms part of the vehicle's brake monitoring system. As the brake pads wear down, the sensor eventually contacts the brake disc, breaking the electrical circuit and triggering the brake pad warning light on the dashboard. This provides a clear indication that the brake pads require replacement.

Manufactured to OE Match standards, this replacement sensor offers reliable performance, correct fitment and dependable brake wear monitoring.

What Does the Brake Pad Wear Sensor Do?

The brake pad wear sensor is designed to monitor the thickness of the brake pads.

Its primary functions include:

• Monitoring brake pad wear
• Activating the dashboard warning light
• Alerting the driver to required brake maintenance
• Supporting safe vehicle operation
• Preventing excessive brake pad wear
• Helping protect brake discs from damage
• Supporting routine brake servicing

The sensor acts as an early warning system, helping drivers replace brake pads before braking performance is compromised.

Why Do Brake Pad Wear Sensors Fail?

Brake wear sensors operate in a demanding environment exposed to heat, moisture, dirt and vibration.

Common causes of failure include:

• Normal brake pad wear
• Sensor activation after pad wear
• Heat damage
• Road debris impact
• Corrosion within electrical connections
• Wiring damage
• Brake servicing damage
• Age-related deterioration

In many cases, the sensor is designed as a service item and is typically replaced whenever the brake pads are renewed.

When Should the Brake Pad Wear Sensor Be Replaced?

Replacement is recommended whenever:

• The brake wear warning light is illuminated
• New brake pads are installed
• The sensor has contacted the brake disc
• The wiring is damaged
• Corrosion is present
• Brake servicing is being carried out
• Fault codes indicate sensor failure
• Preventative maintenance is being performed

Most Porsche technicians recommend fitting new sensors whenever new brake pads are installed.

Why Replacement Matters

A damaged or worn sensor can prevent the brake monitoring system from operating correctly.

Benefits of replacement include:

• Accurate brake wear monitoring
• Reliable warning light operation
• Improved vehicle safety
• Protection against excessive pad wear
• Prevention of brake disc damage
• Correct brake system functionality
• Reduced maintenance risks
• Restoration of factory brake monitoring performance

Replacing a worn sensor is a simple and cost-effective way to maintain the effectiveness of the Porsche brake warning system.

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

99761268001

The product you are viewing cross references to these numbers

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




Porsche 997GT3 MKII 2010>>

Price shown is for each wire sensor.

Related reference numbers
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99761267791

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