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OE Match
OE Match front brake pad wear sensor for Porsche 9YA Cayenne models from 2018 onwards. This replacement front brake wear indicator helps monitor brake pad condition and alert the driver when the front brake pads are reaching their service limit. These should normally be replaced when replacing your brake pads.
Sold individually, There are 2 per axle.
Porsche 9YA Cayenne 2018>>
For cars with Front brake discs 18", brake caliper painted Black (option code: 1ZR), RoW
For cars with Front brake discs 18", brake caliper painted Black (option code: 1ZS), NAR
For cars with Front brake discs 18", brake caliper painted Green (option code: 1ZJ), RoW
For cars with Front brake discs 18", brake caliper painted Green (option code: 1ZB), NAR
Porsche 9YA Cayenne 2018>>
For cars with Front brake discs 19", brake caliper painted Silver (option code: 1LC / 1LI)
For cars with Front brake discs 19", brake caliper painted Green (option code: 1LL)
For cars with Front brake discs 19", brake caliper painted Red (option code: 1ZN), RoW
For cars with Front brake discs 19", brake caliper painted Red (option code: 1ZL), NAR
The brake pad wear sensor fits into the front brake pad assembly and monitors pad wear. When the pad material wears down to the sensor contact point, the system can trigger a dashboard warning, indicating that front brake pad replacement is required.
Functions
• Replaces the front brake pad wear sensor
• Monitors front brake pad wear condition
• Helps trigger the brake pad warning system
• Supports safe and timely brake pad replacement
• Used during front brake pad or front brake system service
• Replaces worn, damaged, broken, brittle, or previously triggered sensors
• OE Match replacement for Porsche 9YA Cayenne brake maintenance.
Why Replace This Part?
Brake pad wear sensors are designed to wear with the brake pads and may be damaged or triggered once the pads reach their wear limit. Sensors can also become brittle, corroded, broken, or damaged during brake servicing. Replacing the front sensor during brake pad replacement helps restore the warning system and prevents false or missing brake wear alerts.
When to Replace This Part
• Front brake pads are being replaced
• The brake pad wear warning light is illuminated
• The sensor has been triggered by worn front brake pads
• The sensor wire is damaged, broken, brittle, or corroded
• Front brake warning faults are being diagnosed
• The sensor was damaged during brake service
• The vehicle is undergoing Porsche Cayenne brake system maintenance.
Where it fits on the car
This sensor fits within the front brake pad wear monitoring system on Porsche 9YA Cayenne models. Exact position can vary depending on model year, front brake caliper type, and brake pad specification.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9Y0907253B
The product you are viewing cross references to these numbers
- Porsche 9YA Cayenne V6 3.0L Petrol (340Hp) 2018-23
- Porsche 9YA Cayenne Coupe V6 3.0L Petrol (340Hp) 2019-23
- Porsche 9YA Cayenne E-Hybrid V6 3.0L V6 (340Hp) 2018-23
- Porsche 9YA Cayenne Coupe E-Hybrid V6 3.0L (340Hp) 2020-23
- Porsche 9YA Cayenne S V6 2.9L Petrol (440Hp) 2018-23
- Porsche 9YA Cayenne Coupe S V6 2.9L Petrol (440Hp) 2019-23
- Porsche 9YA Cayenne GTS V8 4.0L Petrol (460Hp) 2020-23
- Porsche 9YA Cayenne Coupe GTS V8 4.0L Petrol (460Hp) 2021-23
- Porsche 9YA Cayenne Turbo V8 4.0L Petrol (550Hp) 2020-23
- Porsche 9YA Cayenne Coupe Turbo V8 4.0L Petrol (550Hp) 2019-23
- Porsche 9YA Cayenne Turbo S E-Hybrid V8 4.0L (550Hp) 2019-23
- Porsche 9YA Cayenne Coupe Turbo S E-Hybrid V8 4.0L (550Hp) 2020-23
- Porsche 9YA Cayenne Coupe Turbo GT V8 4.0L (640Hp) 2021-23
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12 Month Warranty
Worldwide Delivery
Front Brake Pad Wear Sensor
Sold each - 2 required per car
Maintain the safety and performance of your braking system
with this OE Match Front Brake Pad Wear Sensor, designed
specifically for Porsche 944 models produced between 1987 and 1989. This sensor
forms an important part of the factory brake monitoring system, providing an
early warning when front brake pads have reached their minimum service
thickness.
Fits:
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
Installed within the front brake pad assembly, the wear sensor is designed to trigger the dashboard brake wear warning light when the friction material becomes worn. This allows owners to replace brake pads before braking efficiency is compromised or expensive brake disc damage occurs.
For a performance-focused sports car such as the Porsche 944, maintaining the braking system in peak condition is essential for both safety and driving confidence.
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, the sensor eventually contacts the brake disc and completes an electrical circuit that illuminates the brake wear warning light on the dashboard.
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 planning
- Support safe braking performance
- Maintain factory brake monitoring functionality
The sensor acts as an early warning system, helping drivers address brake wear before it becomes a safety concern.
Why Do Brake Pad Wear Sensors Fail?
Brake wear sensors operate in an environment exposed to heat, moisture, road debris and vibration.
Common causes of failure include:
- Normal brake pad wear
- Sensor activation through brake pad wear
- Damaged sensor wiring
- Corrosion in electrical connections
- Heat damage
- Physical damage during brake servicing
- Water and dirt contamination
- Age-related deterioration
Because the sensor is designed to wear alongside the brake pad, replacement is often recommended whenever new brake pads are installed.
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 fitted.
Common signs include:
- Brake wear warning light illuminated
- Intermittent brake warning messages
- Damaged or broken wiring
- False brake wear warnings
- Corrosion at sensor connections
- Brake pad replacement due to wear
- Sensor damage during servicing
Replacing the sensor during brake maintenance helps ensure continued reliability of the brake monitoring system.
Why Replacement Matters
A functioning brake pad wear sensor helps maintain both safety and braking system reliability.
Benefits include:
- Accurate brake wear monitoring
- Early maintenance alerts
- Protection of brake discs
- Improved braking safety
- Reliable dashboard warning operation
- Reduced risk of excessive brake wear
- Better service planning
- Long-term braking system protection
For Porsche 944 owners, maintaining the factory brake wear warning system helps preserve both performance and peace of mind.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94461221200
The product you are viewing cross references to these numbers
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
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12 Month Warranty
Worldwide Delivery
The OE Match Brake Pad Wear Sensor is a high-quality replacement braking system component designed to monitor brake pad wear and provide a timely warning when the brake pads approach their minimum safe thickness. Manufactured to OE specifications for fit, reliability and performance, this sensor is an essential part of the vehicle's brake wear monitoring system.
Fits:
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
Installed directly into the brake pad assembly, the sensor continuously monitors the condition of the brake friction material. When the pads wear to a predetermined limit, the sensor activates the dashboard brake wear warning light, alerting the driver that brake service is required. This helps maintain optimum braking performance and prevents unnecessary damage to other brake system components.
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 wear warning light remaining permanently illuminated.
- Intermittent brake wear warning messages.
- False brake wear alerts despite sufficient brake pad thickness.
- No warning indication when brake pads are excessively worn.
- Damaged, frayed or broken 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 a harsh environment and are exposed to brake dust, heat, 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 brake pads are installed to maintain accurate monitoring.
- A damaged or malfunctioning sensor can provide inaccurate 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 may be reduced and costly damage to the brake discs can occur.
- Replacing a worn 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.
94461221201
The product you are viewing cross references to these numbers
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
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12 Month Warranty
Worldwide Delivery
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
Click 'Zoom in' for large parts diagram.
Diagram ref no 21
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92861236100
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
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12 Month Warranty
Worldwide Delivery
Monday-Friday: 8.30am - 5.30pm (GMT)
Saturday: Closed
Sunday: Closed