Holstein 2BWS0434 Disc Brake Pad Wear Sensor - Rear or Rear Right

Rear Brake Pad Wear Sensor for Audi

Holstein Parts 2BWS0434 is a disc brake pad wear sensor for rear brake applications on select Audi models. It provides direct fitment coverage for a wide range of Audi A4, A5, A8 Quattro, Q7, Q8, RS, S, and SQ models, including rear right applications where specified.

• Disc brake pad wear sensor for rear brake systems
• Compatible with select 2016-2026 Audi A4, A5, A8 Quattro, Q7, Q8, RS, S, and SQ models
• Rear and rear right fitments listed by vehicle configuration
• Holstein Parts 2BWS0434 for OE-style replacement needs
• This part cross-references Standard Ignition PWS322 for the same application

Product Details

Holstein Parts focuses on direct replacement brake sensors for vehicles that use electronic pad wear monitoring. This Holstein Parts 2BWS0434 sensor is listed for rear brake positions across multiple Audi platforms, including 2025-2026 Audi A8 Quattro, Q7, Q8, RS6 Avant, RS7 Sportback, S8, SQ7, and SQ8 applications, plus earlier Audi A4, A5, S4, S5, RS5, and Q8 fitments. Use the exact year, model, and position match shown in the fitment data to confirm the correct rear brake pad wear sensor for your vehicle.

Common Issues This Sensor Addresses

• Brake pad wear warning light stays on after pad service
• Dashboard brake wear message appears with no current pad issue
• Damaged or broken rear pad wear sensor wiring
• Incorrect sensor fitment after rear brake replacement
• Loss of brake wear monitoring on Audi rear brake systems

Installation Notes and Tips

Verify the rear or rear right position before ordering, since fitment varies by model and brake configuration. Inspect the sensor routing and connector condition during brake service, and replace the sensor if the original lead is damaged, stretched, or contaminated. Confirm the brake rotor and caliper setup against the listed notes for vehicles with multiple rear brake configurations.

Quality Assurance

Holstein Parts 2BWS0434 is cataloged as a direct-fit brake sensor replacement for the listed Audi applications. Confirm fitment by year, model, and rear position before installation.