The Service Information (SI) bulletin B61 15 12 from BMW likely pertains to an updated battery registration procedure. BMWs often require battery registration when a new battery is installed in the vehicle. Registering a new battery is essential for the proper functioning of the vehicle's electrical and charging system. It helps the vehicle's computer system recognize the new battery and adjust charging voltage and other parameters accordingly.
Here is a general outline of the battery registration procedure in a BMW:
**1. Obtain the Correct Battery:**
- Make sure you have the correct replacement battery for your BMW. The battery specifications and type should match the manufacturer's recommendations.
**2. Disconnect the Negative Battery Terminal:**
- Before replacing the battery, always disconnect the negative (black) battery terminal. This ensures safety during the replacement process.
**3. Remove the Old Battery:**
- Carefully remove the old battery from its mounting location. Be mindful of any battery hold-downs or brackets that may be in place.
**4. Install the New Battery:**
- Install the new battery in the same orientation as the old one. Ensure that it is securely positioned in the battery tray.
**5. Reconnect the Negative Battery Terminal:**
- After the new battery is securely in place, reconnect the negative battery terminal. Make sure it is tightened properly.
**6. Register the New Battery:**
- This is the critical step related to the SI bulletin. BMWs require battery registration to inform the vehicle's computer system about the new battery. This is typically done using a diagnostic tool like BMW's ISTA (Integrated Service Technical Application) software or through a compatible OBD-II scanner with BMW-specific capabilities.
- During the registration process, the vehicle's computer will update charging parameters and adapt to the new battery's characteristics.
**7. Clear Fault Codes (if necessary):**
- After the battery registration is complete, check for and clear any fault codes that may have been triggered during the battery replacement process.
**8. Test the Charging System:**
- Start the vehicle and ensure that the charging system is functioning correctly. Check the battery voltage and charging voltage to confirm that they are within the expected range.
**9. Verify All Electrical Functions:**
- Verify that all electrical functions, including lights, accessories, and power windows, are working correctly.
**10. Dispose of the Old Battery Properly:**
- Be sure to dispose of the old battery at a recycling center or an authorized battery disposal facility. Automotive batteries contain hazardous materials and should not be discarded with regular household waste.
