PowerStop SW-0306 Disc Brake Pad Wear Sensor - Front

Front Euro-Stop Brake Wear Sensor

The PowerStop SW-0306 is a front disc brake pad wear sensor for select Audi applications. It is built to match OEM form, fit, and function, with an oval female connector, 2-wire layout, and blade terminals for direct replacement service.

For Audi A4, A5, A6, A7, A4 Quattro, A5 Quattro, A6 Quattro, S4, S5, S7, RS7, allroad, and Q5 front brake service, this sensor is specified for vehicles using the listed rotor and brake configurations. The SW-0306 is also referenced by part number SW-0306 for easy catalog matching.

Key Features

• Front disc brake pad wear sensor for Euro-style brake systems
• OEM-style form, fit, and function
• Oval female connector with black housing
• 2-wire design with 2 blade terminals
• Built for high-temperature operation and stable electrode conductivity
• Direct replacement for select Audi front brake wear sensor applications

Product Details

PowerStop’s Front Euro-Stop Electronic Brake Wear Sensor is engineered for vehicles that use electronic pad wear monitoring. The sensor is designed to replace a worn or damaged original sensor during brake pad and rotor service, helping restore proper wear-indicator operation. PowerStop builds the SW-0306 to meet or exceed OEM requirements and to maintain reliable signal performance over extended mileage.

This part cross-references Beck/Arnley 084-1839 for the same application.

What It Helps Address

• Brake wear warning light triggered by a failed sensor
• Damaged sensor wiring during pad replacement
• Intermittent pad wear indicator readings
• Loss of brake wear monitoring after rotor and pad service
• Fitment issues when replacing an OE-style front wear sensor

Installation Notes

Replace the wear sensor when servicing brake pads if the original sensor is worn, broken, or heat-damaged. Verify rotor size and brake system notes before ordering, since fitment varies by model and brake package. Confirm the connector shape, terminal style, and front position match the vehicle’s original sensor before installation.

• Fits 2016-2018 Audi A6, front, with 320mm or 345mm rotor
• Fits 2014-2018 Audi RS7, front, with 345mm rotors
• Fits 2014-2018 Audi S7, front, with 345mm rotors
• Fits 2008-2017 Audi A5 Quattro, front
• Fits 2014-2017 Audi A7 Quattro, front, with 345mm rotors
• Fits 2008-2017 Audi S5, front
• Fits 2009-2016 Audi A4, front
• Fits 2009-2016 Audi A4 Quattro, front
• Fits 2013-2016 Audi allroad, front
• Fits 2013-2016 Audi Q5, front, with 345mm diameter brake rotor; with TRW/Girling brakes
• Fits 2010-2016 Audi S4, front
• Fits 2013-2015 Audi A6, front, with 320mm rotors
• Fits 2014-2015 Audi A6 Quattro, front, 320mm or 345mm diameter rotor
• Fits 2010-2014 Audi A5, front
• Fits 2009-2013 Audi A6 Quattro, front, with 320mm rotors
• Fits 2012 Audi A6, front
• Fits 2009-2012 Audi Q5, front, with 320mm front & 345mm rear brakes
• Fits 2009-2010 Audi Q5, front, with 320mm rotors

Quality Assurance

PowerStop designs this Euro-Stop sensor to meet the same form, fit, and function as the original OEM part, with construction intended to withstand extreme temperatures for dependable conductivity and long service life.