1. Úvod
The Dorman BW1011 Front Disc Brake Pad Wear Sensor is a direct replacement component designed to monitor the wear level of your vehicle's front disc brake pads. This sensor plays a critical role in vehicle safety by alerting the driver when brake pads require replacement, preventing potential damage to brake rotors and ensuring consistent braking performance. It is engineered to match the fit and function of the original equipment part on specified BMW models.
Klíčové vlastnosti
- Přímá náhrada: Engineered to match the performance and specifications of the original equipment sensor.
- Essential Safety Component: Informs the driver of remaining brake pad life, indicating when replacement is necessary.
- Odolná konstrukce: Manufactured to strict specifications for reliable and long-lasting performance.
- Široká kompatibilita: Designed for specific BMW models, ensuring proper fit and function.
2. Obsah balení
Po otevření balení se prosím ujistěte, že jsou všechny součásti přítomny a nepoškozené.
- 1 x Dorman BW1011 Front Disc Brake Pad Wear Sensor

Figure 2.1: The Dorman BW1011 Front Disc Brake Pad Wear Sensor, showing the full assembly.
3. Bezpečnostní informace
Before beginning any work on your vehicle's braking system, it is crucial to observe proper safety precautions. Brake system work can be complex and should ideally be performed by a qualified technician. If you choose to proceed yourself, ensure you have the necessary tools and knowledge.
- Vždy používejte vhodné osobní ochranné prostředky, včetně ochranných brýlí a rukavic.
- Před prací pod vozidlem se ujistěte, že je bezpečně podepřeno zvedáky na rovném povrchu. Nikdy se nespoléhejte pouze na zvedák.
- Disconnect the vehicle's battery to prevent accidental electrical shorts or activation of vehicle systems.
- Před manipulací nechte brzdové součásti vychladnout, protože se během provozu mohou extrémně zahřát.
- Podrobné pokyny a specifikace utahovacího momentu naleznete v servisní příručce vašeho vozidla.
- Udržujte děti a domácí zvířata mimo pracovní oblast.
4. Nastavení a instalace
This section outlines the general procedure for replacing the front disc brake pad wear sensor. Specific steps may vary slightly depending on your vehicle model. Always consult your vehicle's service manual for precise instructions.
4.1 Kontrolní seznam před instalací
- New Dorman BW1011 Brake Wear Sensor.
- Appropriate jack and jack stands.
- Wheel lug wrench.
- Basic hand tools (e.g., screwdrivers, pliers, wire cutters).
- Čisté hadry nebo utěrky.
- Vehicle service manual (recommended).
4.2 kroky instalace
- Připravte vozidlo: Park the vehicle on a level surface, engage the parking brake, and block the rear wheels. Loosen the lug nuts on the wheel where the sensor is to be replaced. Using a jack, lift the vehicle and secure it with jack stands. Remove the wheel.
- Vyhledejte starý senzor: The brake wear sensor is typically attached to one of the front brake pads and routed along the brake line or suspension components. Identify the existing sensor and its routing.
- Odpojení starého senzoru: Carefully disconnect the electrical connector of the old sensor. This usually involves pressing a tab or releasinklip GA.
- Demontáž starého senzoru: Detach the sensor from the brake pad and unclip it from any mounting points along its route. Dispose of the old sensor responsibly.
- Instalace nového senzoru: Carefully attach the wear tip of the new Dorman BW1011 sensor to the designated slot on the new brake pad (if replacing pads simultaneously) or the existing pad. Ensure it is securely seated. Route the new sensor cable exactly as the old one was routed, securing it with any clips or ties to prevent it from interfering with moving parts.

Figure 4.1: Close-up of the sensor's wear tip, which makes contact with the brake rotor.
- Připojení nového senzoru: Plug the electrical connector of the new sensor into the vehicle's wiring harness. Ensure a firm and secure connection.

Figure 4.2: The electrical connector of the Dorman BW1011 sensor.
- Znovu sestavit: Reinstall the wheel, hand-tighten the lug nuts, then lower the vehicle. Torque the lug nuts to the manufacturer's specifications.
- Testovací systém: Start the vehicle and check for any brake warning lights. If the light persists, refer to the Troubleshooting section or consult a professional.
5. Principy fungování
The Dorman BW1011 brake pad wear sensor operates on a simple electrical principle. It contains a conductive loop embedded within a plastic housing. As the brake pad wears down, the rotor eventually makes contact with the sensor's wear tip, breaking the electrical circuit. This interruption in the circuit signals the vehicle's onboard computer, which then illuminates a brake wear warning light on the dashboard, indicating that the brake pads have reached their minimum safe thickness and require replacement.
6. Údržba
The Dorman BW1011 brake pad wear sensor is designed to be a maintenance-free component. However, it is crucial to inspect the sensor and its wiring during routine brake service or whenever brake pads are replaced. Look for:
- Fyzické poškození: Check for cuts, abrasions, or cracks in the sensor wire or housing.
- Správné směrování: Ensure the sensor wire is securely clipped and not rubbing against any moving parts or hot surfaces.
- Zabezpečené připojení: Verify that the electrical connector is clean, dry, and firmly seated.
If any damage is observed, the sensor should be replaced to ensure accurate brake wear indication.
7. Řešení problémů
If you encounter issues after installing the Dorman BW1011 brake wear sensor, consider the following troubleshooting steps:
- Brake Warning Light Remains On:
- Verify that the new sensor is correctly installed and fully seated in the brake pad.
- Check the electrical connection for tightness and ensure no pins are bent or corroded.
- Inspect the entire length of the sensor wire for any damage or pinching.
- Ensure the brake pads themselves are not excessively worn, as the sensor will trigger if they are.
- Some vehicles may require the brake wear light to be reset using a diagnostic tool after sensor replacement. Consult your vehicle's service manual or a qualified technician.
- Brake Warning Light Does Not Come On (and pads are worn):
- This indicates a potential fault with the sensor or its wiring. Re-inspect the sensor for proper installation and any damage.
- Ensure the sensor's wear tip is making proper contact with the rotor when the pads are worn.
- A diagnostic scan may be necessary to identify electrical faults in the circuit.
Pokud kroky pro řešení potíží problém nevyřeší, doporučuje se vyhledat pomoc certifikovaného automobilového technika.
8. Specifikace
| Atribut | Specifikace |
|---|---|
| Značka | Dorman |
| Číslo modelu | BW1011 |
| Číslo dílu výrobce | BW1011 |
| Číslo dílu OEM | 34356791958 |
| Hmotnost položky | 1.6 unce |
| Rozměry produktu | 9 x 6 x 0.25 palce |
| UPC | 194883957442 |
| Aplikace | Front Disc Brake Pad Wear Sensor |
| Kompatibilita | Select BMW Models (verify fitment for your specific vehicle) |
9. Informace o záruce
Dorman products are manufactured to high-quality standards and are backed by a commitment to customer satisfaction. For specific warranty details regarding your Dorman BW1011 Front Disc Brake Pad Wear Sensor, please refer to the warranty documentation included with your purchase or visit the official Dorman webZáruční podmínky se obvykle vztahují na vady materiálu a zpracování při běžném používání a servisu.
10. Podpora
If you require further assistance, have questions about installation, or need to report a product issue, please contact Dorman customer support. You can typically find contact information on the Dorman website or through the retailer where the product was purchased. When contacting support, please have your product model number (BW1011) and purchase details readily available.