Holstein 2BWS0503 Disc Brake Pad Wear Sensor - Front or Front Left
OE Quality 60-Day Returns
Holstein
 Holstein Parts

Holstein 2BWS0503 Disc Brake Pad Wear Sensor - Front or Front Left

Brand Holstein 2BWS0503
Position Front Left and Front
Product line Holstein Parts
Fits Audi · 18 vehicles

Brake pad wear sensor. Monitors pad wear to help signal when service is needed.

Holstein Parts. A trusted name in replacement brake sensors.

Cross-references 80A-615-121-A and 80A615121A for the same application. See all 2.

$21.78Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
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Step 2 — Quantity
Disc Brake Pad Wear Sensors are typically replaced in pairs, axle by axle.
Order total $21.78
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Disc Brake Pad Wear Sensor options

Holstein Disc Brake Pad Wear Sensor for Audi

Holstein Parts 2BWS0503 is a disc brake pad wear sensor for select Audi Q5 and Audi SQ5 applications. It provides direct fitment coverage for front and front-left positions on model years from 2017 through 2025, including Brembo-equipped brake setups where specified.

Key Features

  • Disc brake pad wear sensor for front brake monitoring
  • Fits select Audi Q5 and Audi SQ5 models
  • Application-specific coverage for front and front-left positions
  • Includes fitment for 338x30mm Brembo front brake configurations where listed
  • Holstein Parts 2BWS0503 for OE-style replacement needs

Detailed Fitment and Use

Holstein Parts 2BWS0503 is built for vehicles that use an electronic brake pad wear indicator at the front axle. It fits 2025 Audi Q5, front; 2025 Audi Q5 Sportback, front; 2021-2024 Audi Q5, front; 2019-2020 Audi Q5, front left; 2018-2020 Audi SQ5, front left; 2018 Audi Q5, front left; 2017 Audi Q5, front left; and 2017 Audi SQ5, front left. This part cross-references 80A-615-121-A and 80A615121A for the same application.

Use Holstein Parts 2BWS0503 when the brake wear sensor circuit needs replacement on Audi Q5 or Audi SQ5 front brake systems. The part number 2BWS0503 is also a useful reference when verifying the correct sensor for Brembo front brake packages and harness-equipped front applications.

Common Issues This Part Can Address

  • Brake pad wear warning light stays illuminated
  • Brake wear indicator message appears after pad service
  • Damaged or broken front brake sensor wiring
  • Faulty pad wear sensor signal at the instrument cluster
  • Incorrect sensor fitment on Audi Q5 or Audi SQ5 front brake setups

Installation Notes and Quality

Verify the vehicle year, model, and brake configuration before installation, especially on 2017-2020 Audi Q5 and Audi SQ5 front-left Brembo applications. Confirm the connector style and routing against the original sensor before replacement. Holstein Parts 2BWS0503 is cataloged as a direct-fit brake sensor solution for the listed Audi applications.

Related reading

This part fits 18 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2025AudiQ52.0LL4Frontwith Harness; Holstein Parts
2025AudiQ5 Sportback2.0LL4Frontwith Harness; Holstein Parts
2024AudiQ5——FrontHolstein Parts
2024AudiQ5 Sportback——FrontHolstein Parts
2023AudiQ52.0LL4FrontHolstein Parts
2023AudiQ5 Sportback——FrontHolstein Parts
2022AudiQ52.0LL4FrontHolstein Parts
2022AudiQ5 Sportback——FrontHolstein Parts
2021AudiQ52.0LL4FrontHolstein Parts
2021AudiQ5 Sportback——FrontHolstein Parts
2020AudiQ52.0LL4Front LeftBrembo, 338X30mm 5/112; Disc Brakes, Front [1Lg],Disc Brakes, Front [1Lh]; Holstein Parts
2020AudiSQ53.0LV6Front LeftBrembo, 338X30mm 5/112; Disc Brakes, Front [1Lg],Disc Brakes, Front [1Lh]; Holstein Parts
2019AudiQ52.0LL4Front LeftBrembo, 338X30mm 5/112; Disc Brakes, Front [1Lg],Disc Brakes, Front [1Lh]; Holstein Parts
2019AudiSQ53.0LV6Front LeftBrembo, 338X30mm 5/112; Disc Brakes, Front [1Lg],Disc Brakes, Front [1Lh]; Holstein Parts
2018AudiQ52.0LL4Front LeftBrembo, 338X30mm 5/112; "Disc Brakes, Rear [1Kq], Disc Brakes, Rear [1Kw], Disc Brakes, Rear [2Ej]"; Disc Brakes, Rear [2Ej],Disc Brakes, Rear [1Kq]; Holstein Parts
2018AudiSQ53.0LV6Front LeftBrembo, 338X30mm 5/112; Disc Brakes, Front [1Lg],Disc Brakes, Front [1Lh]; Holstein Parts
2017AudiQ52.0LL4Front LeftFrom Vin FY-H-000 001 >>, Disc brakes in front [1LK]; Disc brakes in front [1LP]; Disc brakes in front [1LG]; Disc brakes in front [1LH]; Holstein Parts
2017AudiSQ53.0LV6Front LeftFrom Vin FY-H-000 001 >>, Disc brakes in front [1LK]; Disc brakes in front [1LP]; Disc brakes in front [1LG]; Disc brakes in front [1LH]; Holstein Parts
Directly replaces or cross-references 2 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
80A-615-121-A80A615121A