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Porsche > 911 & 912 (1965-1989) > 911 1978-1989 3.3L Turbo (930) > Brakes >

Brake Pad Wear Sensors

Brake Pad Wear Sensors

DISPLAYING 1 to 2 (of 2 products)
Brake pad wear sensor. Porsche 911 / 930 / 944 - 39539, 94461221100, 94461221105
2
Brake pad wear sensor. Porsche 911 / 930 / 944
94461221105/1
Product Information
Product Information
Brake Pad Wear Sensor.
The OE Match Brake Pad Wear Sensor is a high-quality replacement braking system component designed to monitor brake pad condition and alert the driver when the pads have reached their minimum safe operating thickness. Manufactured to OE specifications for fit, performance and reliability, this sensor forms an essential part of the vehicle's brake wear monitoring system.  

Fits:
  • Porsche 911 1984-1986 3.2L
  • Porsche 911 1987-1989 3.2L G50
  • Porsche 911 1978-1989 3.3L Turbo (930)
  • Porsche 944 2.5L 8V 1982-87
  • Porsche 944 Turbo 2.5L 8V 1985-88  

Fitted directly into the brake pad assembly, the sensor continuously monitors brake pad wear and communicates with the vehicle's warning system. When the friction material wears to a predetermined level, the sensor activates the brake pad wear warning light, ensuring maintenance can be carried out before braking performance is compromised.  

What This Product Does:
  • Monitors brake pad wear throughout the life of the brake pads.
  • Activates the brake wear warning light when replacement is required.
  • Provides early notification of 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 pad wear warning light remaining illuminated.
  • Intermittent brake wear warning messages.
  • False brake wear alerts despite sufficient brake pad material.
  • 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:

  • Brake pad wear sensors operate in demanding 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 brake pads are fitted to ensure continued monitoring accuracy.
  • A damaged or malfunctioning sensor can provide inaccurate brake wear information, potentially leading to unnecessary warning lights or failure to notify the driver when brake pads require replacement. 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 brake pad wear sensor restores accurate brake monitoring, ensures correct operation of the warning system and helps maintain optimum braking performance and safety. 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.

94461221105
39539
94461221100
94461221105

The product you are viewing cross references to these numbers
Brake pad wear sensor. Porsche 911 Turbo (930) - 39538, 93061221100,
1
Brake pad wear sensor. Porsche 911 Turbo (930)
93061221100/1
Product Information
Product Information
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 wear of the rear brake pads and provide an early warning when the friction material reaches its minimum safe operating thickness. Manufactured to OE specifications for fit, function and reliability, this sensor helps maintain optimum braking performance and supports timely brake maintenance.  

rear

Fits:
  • Porsche 911 1978-1989 3.3L Turbo (930)

Installed directly into the rear brake pad assembly, the sensor forms part of the vehicle's brake wear monitoring system. As the brake pads wear down, the sensor detects when the service limit has been reached and activates the dashboard brake wear warning light, alerting the driver that brake pad replacement is required.  

What This Product Does:
  • Monitors rear brake pad wear throughout the life of the brake pads.
  • Activates the brake wear warning indicator when service is required.
  • 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 consistent 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 alerts despite adequate brake pad thickness.
  • No warning indication 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 continuously 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 brake pads are fitted to ensure accurate brake wear monitoring.
  • A damaged or malfunctioning sensor can provide inaccurate wear information, potentially causing unnecessary warning lights or failing to notify the driver when brake pads have reached their replacement limit. If brake pads are allowed to wear excessively, braking performance can be reduced and expensive damage to the brake discs may occur.
  • Replacing a worn rear brake pad wear sensor restores accurate brake wear monitoring, ensures correct 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.

93061221100
39538
93061221100

The product you are viewing cross references to these numbers
DISPLAYING 1 to 2 (of 2 products)
Also found on these pages
About Brake Pad Wear Sensors

Porsche Brake Pad Anti-Wear Sensors | Design911 Precision Components for Safety, Monitoring & Maintenance

Brake pad anti-wear sensors play a vital role in your Porsche’s braking system by monitoring pad thickness and alerting you when replacement is needed. By providing real-time data, these sensors help prevent excessive wear, protect brake discs, and maintain braking safety. Replacing worn or damaged sensors ensures your Porsche’s onboard systems can accurately detect pad wear — preserving both performance and peace of mind.

At Design911, we supply a comprehensive range of brake pad anti-wear sensors designed for precise fitment and dependable performance. Manufactured using high-grade materials and advanced sensor technology, our components ensure accurate readings under all driving conditions. Ideal for routine maintenance, restoration, or brake system upgrades, these sensors help your Porsche maintain its legendary braking precision.

What Do Brake Pad Anti-Wear Sensors Do?

Brake pad wear sensors are an essential electronic component that monitor the condition of your brake pads and alert the driver when they need replacement.

Core Functions:
• Continuously monitor brake pad thickness.
• Trigger dashboard warning lights when pads reach the wear limit.
• Protect brake discs from damage caused by worn pads.
• Support preventative maintenance and consistent braking performance.
• Ensure optimal braking efficiency and driver safety.

Accurate brake pad sensors allow you to maintain Porsche’s high standards of safety, performance, and responsiveness.

Why Do Brake Pad Anti-Wear Sensors Fail or Degrade?

Because they operate in extreme environments near the wheels and brakes, wear sensors are exposed to heat, friction, and contamination, which can cause malfunction or damage over time.

Common Causes of Failure Include:
• Melting or cracking due to high brake temperatures.
• Corrosion or electrical failure from water and road salt.
• Cable wear or fraying caused by vibration or debris.
• Poor connections or sensor dislodgement during servicing.
• Age-related degradation of wiring or insulation.

When a sensor fails, the system may provide false warnings or fail to detect worn pads, increasing the risk of brake system damage or reduced safety.

Why Replace or Upgrade Your Porsche Brake Pad Anti-Wear Sensors?

Replacing faulty or aged sensors ensures your Porsche’s braking system continues to deliver accurate monitoring and performance reliability. Design911’s precision-engineered sensors are crafted for long-term durability and compatibility across Porsche models.

Key Benefits:
• Restores accurate brake pad wear monitoring.
• Prevents unnecessary pad or disc wear.
• Heat- and moisture-resistant design for long-lasting reliability.
• Plug-and-play fitment for easy installation.
• Engineered for exact Porsche compatibility.
• Ideal for maintenance, upgrades, or complete brake servicing.

Design911’s Porsche brake pad anti-wear sensors ensure consistent safety alerts and reliable performance — maintaining the precision and quality expected of every Porsche braking system.

Highlights

• Premium Porsche brake pad wear sensors for accurate monitoring.
• Designed to withstand extreme heat and vibration.
• Ensures timely replacement of brake pads for safety.
• Protects discs and braking components from excessive wear.
• Compatible with classic and modern Porsche models.
• Perfect for servicing, restoration, or performance upgrades.

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