Method 1: Using a Diagnostic Scanner (Recommended)
This is the most reliable method. A diagnostic scanner (OBD-II scanner) capable of reading BMW specific codes is necessary. These scanners are readily available online or at auto parts stores.
1. Connect the scanner: Plug the scanner into the OBD-II port (usually located under the dashboard).
2. Read codes: The scanner will read any stored fault codes related to the lights.
3. Clear codes: After identifying the codes (and ensuring they're related to the lights and brakes), use the scanner's functionality to clear the codes.
4. Test: Start the car and check if the dash light is still blinking. If the problem was a simple fault code related to a bulb or sensor, it should be resolved. If it persists, there's another issue.
Method 2: Battery Disconnect (Less Reliable)
This is a simpler method, but it's less reliable and might not work for all situations. It only clears volatile memory and may not address all stored fault codes.
1. Disconnect the battery: Locate the battery in the engine compartment and disconnect the negative (-) terminal first, then the positive (+) terminal.
2. Wait: Wait for at least 30 minutes (some suggest longer, even up to an hour) to allow the car's computer system to fully reset.
3. Reconnect the battery: Reconnect the positive (+) terminal first, then the negative (-) terminal.
4. Test: Start the car and check if the dash light is still blinking.
Important Considerations:
* Specific Bulb Issues: If a particular bulb keeps failing, there might be a wiring problem or a faulty socket. Inspect the wiring and sockets carefully before concluding that it's simply a code issue.
* Brake Pad Sensor: The brake system often uses sensors to detect low brake pads. If the new pads weren't installed correctly, or if the sensor wasn't properly reset or replaced, this can trigger a warning light.
* Brake Fluid Level: Low brake fluid can also trigger a warning light. Ensure your brake fluid level is correct.
* ABS/Brake System Issues: The blinking light *could* indicate a more serious problem with the Anti-lock Braking System (ABS) or other components of the braking system beyond just the pads. If the light persists after trying the above, professional diagnosis is crucial.
If neither method works, you need a professional BMW mechanic to diagnose the problem using their advanced diagnostic equipment. Ignoring a persistent warning light, especially one related to brakes, is risky.
