Standard Ignition PWS291 Disc Brake Pad Wear Sensor - Rear

Overview of Standard Ignition Disc Brake Pad Wear Sensor PWS291

The Standard Ignition PWS291 disc brake pad wear sensor is designed to provide accurate monitoring of brake pad wear for select BMW models. This sensor helps maintain optimal braking performance by alerting drivers when brake pads require replacement.

• Connector Gender: Female
• Connector Quantity: 1
• Connector Shape: Oval
• Function: Brake pad wear sensor
• Harness Length: 39.75 inches (1009.65 mm)
• Mounting Location: Brake caliper
• Terminal Gender: Male
• Terminal Quantity: 2
• Terminal Type: Pin

Detailed Product Description

The Standard Ignition PWS291 brake pad wear sensor is engineered to fit a range of BMW vehicles including the 320i, 320i xDrive, 328d, 328d xDrive, 328i, 328i GT xDrive, 328i xDrive, 335i, 335i GT xDrive, 335i xDrive, 428i, 428i xDrive, 435i, 435i xDrive, and ActiveHybrid 3 models. Featuring a female oval connector and a 39.75-inch harness, this sensor mounts directly to the brake caliper to provide reliable wear detection. The sensor’s two male pin terminals ensure secure electrical connections, contributing to consistent brake system monitoring.

Applications and Problem Solving

• Detects brake pad wear to prevent brake failure
• Alerts drivers to timely brake pad replacement
• Helps avoid costly rotor damage due to worn pads
• Maintains brake system safety and performance
• Prevents unexpected brake system warnings

Installation Notes and Tips

When installing the Standard Ignition PWS291 sensor, ensure the brake caliper is clean and free of debris to allow proper mounting. Verify the oval female connector aligns correctly with the vehicle’s wiring harness. Route the 39.75-inch harness carefully to avoid contact with moving parts or excessive heat. Confirm secure connection of the two male pin terminals to prevent intermittent signals.

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications, ensuring reliable performance and durability. The PWS291 sensor undergoes rigorous quality control testing to maintain consistent functionality. Warranty coverage details should be confirmed with the product documentation or authorized distributor.