BMW E46 3-series (318i, 320i, 323i, 325i, 325xi, 328i, 330i, 330xi, 328Ci, 330Ci, M3) 1999 - 2006. Battery Location:
1. Park your vehicle on level ground and turn off the engine.
2. Engage the parking brake.
3. Open the hood.
4. Locate the battery. The battery is located in the engine compartment, on the passenger side of the vehicle.
5. Remove the battery hold-down clamp.
6. Disconnect the negative battery cable.
7. Disconnect the positive battery cable.
8. Remove the battery from the vehicle.
Reinstallation is the reverse of removal.
When reconnecting the battery cables, be sure to connect the positive cable first and tighten it securely. Then, connect the negative cable and tighten it securely.
