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Raybestos EWS138 Disc Brake Pad Wear Sensor - FrontOE Quality 60-Day Returns
Part #: EWS138

Raybestos EWS138 Disc Brake Pad Wear Sensor - Front

R-Line, Front
82 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
R-Line, Front
Fitment: Audi, A5 Quattro, A4, A4 Quattro, allroad, Q5, S4, S5, A6, A6 Quattro, A7 Quattro, A5, and A4 allroad
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Not what you need? See all Disc Brake Pad Wear Sensor options

Reliable Disc Brake Pad Wear Sensor for Audi Models

The Raybestos R-Line Disc Brake Pad Wear Sensor (Part Number EWS138) is designed to provide accurate and timely alerts for brake pad wear on select Audi vehicles. Engineered to maintain optimal braking performance, this sensor helps ensure your Audi A4, A5, A6, A7, Q5, and S-series models stay safe and responsive.

  • Compatible with Audi A4, A4 allroad, A4 Quattro, A5, A5 Quattro, A6, A6 Quattro, A7 Quattro, allroad, Q5, S4, and S5 models
  • Wiring harness length options: 11.811 inches and 300 inches (300.000 cm)
  • Blade terminal type with male terminals and female connector
  • Includes one connector and two terminals
  • Wiring harness included for straightforward installation
  • Grommets not included

About the Raybestos R-Line Product Line

The R-Line by Raybestos represents a focused range of brake components designed for reliable performance and durability. This line emphasizes precise fitment and quality materials, making the EWS138 sensor a dependable choice for maintaining brake system integrity on various Audi models. The R-Line sensors are engineered to meet or exceed OE specifications, ensuring consistent operation within the braking system.

Detailed Product Description

The Raybestos R-Line Disc Brake Pad Wear Sensor EWS138 is specifically engineered to monitor brake pad wear on multiple Audi vehicles, including the A4, A5, A6, A7, Q5, and S-series models. Featuring a wiring harness length of 11.811 inches and an extended option of 300 inches, this sensor accommodates different installation requirements. The blade terminal type with male terminals and a female connector ensures secure electrical connections. With one connector and two terminals included, the sensor is ready for integration into the vehicle’s brake system. The wiring harness is included to facilitate installation, although grommets are not part of the package.

Common Applications and Issues Addressed

  • Alerts for worn brake pads to prevent brake system damage
  • Helps maintain consistent braking performance on Audi A4 and A5 models
  • Prevents unexpected brake failure by providing timely wear notifications
  • Supports brake system diagnostics on Audi Q5 and S-series vehicles
  • Ensures compliance with vehicle safety standards for brake monitoring

Installation Notes and Tips

  • Verify compatibility with your specific Audi model before installation
  • Handle the wiring harness carefully to avoid damage during installation
  • Ensure secure connection of blade terminals to prevent electrical faults
  • Follow vehicle manufacturer guidelines for sensor replacement procedures
  • Test sensor functionality after installation to confirm proper operation

Quality Assurance and Warranty

Raybestos R-Line brake components, including the EWS138 Disc Brake Pad Wear Sensor, are manufactured to meet stringent quality standards. While specific warranty details are not provided here, Raybestos products typically come with coverage against defects in materials and workmanship. For warranty information, consult the product documentation or contact the manufacturer directly.

BrandRaybestos
Part NumberEWS138
PositionR-Line, Front
Connector GenderFemale
Connector Quantity1
Grommets IncludedNo
Overall Length300.000
Terminal GenderMale
Terminal Quantity2
Terminal TypeBlade
Wiring Harness IncludedYes
Wiring Harness Length11.811
Wiring Harness Length300.000

This part fits 82 vehicles. Search below:

YearMakeModelSubmodelLitersCylindersFuel TypePositionNotes
2017AudiA5 QuattroFrontR-Line
2016AudiA4FrontR-Line
2016AudiA4 QuattroFrontR-Line
2016AudiA5FrontRaybestos R-Line
2016AudiA5 QuattroFrontR-Line
2016AudiallroadFrontR-Line
2016AudiQ5Hybrid PrestigeFrontR-Line
2016AudiS4FrontR-Line
2016AudiS5FrontR-Line
2015AudiA4FrontR-Line
2015AudiA4 QuattroFrontR-Line
2015AudiA5FrontRaybestos R-Line
2015AudiA5 QuattroFrontR-Line
2015AudiA62.0LL4FrontR-Line
2015AudiA6 Quattro2.0LL4GASFrontR-Line
2015AudiA6 Quattro3.0LV6DIESELFrontR-Line
2015AudiA7 QuattroFrontDisc Brake Rotor - 320mm Diameter; R-Line
2015AudiallroadFrontR-Line
2015AudiQ5Hybrid PrestigeFrontR-Line
2015AudiS4FrontR-Line
2015AudiS5FrontR-Line
2014AudiA4FrontR-Line
2014AudiA4 QuattroFrontR-Line
2014AudiA5FrontR-Line
2014AudiA5 QuattroFrontR-Line
2014AudiA62.0LL4FrontR-Line
2014AudiA6 Quattro2.0LL4GASFrontR-Line
2014AudiA6 Quattro3.0LV6DIESELFrontR-Line
2014AudiA7 QuattroFrontDisc Brake Rotor - 320mm Diameter; R-Line
2014AudiallroadFrontR-Line
2014AudiQ5HybridFrontR-Line
2014AudiQ5Hybrid PrestigeFrontR-Line
2014AudiS4FrontR-Line
2014AudiS5FrontR-Line
2013AudiA4FrontR-Line
2013AudiA4 allroadFrontR-Line
2013AudiA4 QuattroFrontR-Line
2013AudiA5FrontR-Line
2013AudiA5 QuattroFrontR-Line
2013AudiA62.0LL4FrontR-Line
2013AudiA6 Quattro2.0LL4GASFrontR-Line
2013AudiA6 Quattro3.0LV6DIESELFrontR-Line
2013AudiA7 QuattroFrontDisc Brake Rotor - 320mm Diameter; R-Line
2013AudiallroadFrontR-Line
2013AudiQ5HybridFrontR-Line
2013AudiQ5Hybrid PrestigeFrontR-Line
2013AudiS4FrontR-Line
2013AudiS5FrontR-Line
2012AudiA4FrontR-Line
2012AudiA4 QuattroFrontR-Line
2012AudiA5FrontR-Line
2012AudiA5 QuattroFrontR-Line
2012AudiA6Front300mm Length - Disc Brake Pad Wear Sensor; R-Line
2012AudiA6 Quattro3.0LV6DIESELFrontR-Line
2012AudiA7 QuattroFrontDisc Brake Rotor - 320mm Diameter; R-Line
2012AudiA7 QuattroFrontFitment Note: For use with 345 MM disc brake rotors.; R-Line
2012AudiQ5FrontR-Line
2012AudiS4FrontR-Line
2012AudiS5FrontRotor Diameter 345MM; Rotor Diameter 320MM; R-Line
2011AudiA4FrontR-Line
2011AudiA4 QuattroFrontR-Line
2011AudiA5FrontR-Line
2011AudiA5 QuattroFrontR-Line
2011AudiQ5FrontR-Line
2011AudiS4FrontR-Line
2011AudiS5FrontRotor Diameter 345MM; Rotor Diameter 320MM; R-Line
2010AudiA4FrontR-Line
2010AudiA4 QuattroFrontR-Line
2010AudiA5FrontR-Line
2010AudiA5 QuattroFrontR-Line
2010AudiQ5FrontR-Line
2010AudiS4FrontR-Line
2010AudiS5FrontRotor Diameter 345MM; Rotor Diameter 320MM; R-Line
2009AudiA4FrontR-Line
2009AudiA4 QuattroFrontR-Line
2009AudiA5FrontRaybestos R-Line
2009AudiA5 QuattroFrontR-Line
2009AudiQ5FrontR-Line
2009AudiS5FrontR-Line
2008AudiA5FrontRaybestos R-Line
2008AudiA5 QuattroFrontR-Line
2008AudiS5FrontR-Line

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

0841839116.33006116.33016116.330313552524518K06151218T0907637

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

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