How to upgrade headlights on BMW E46 325xi (M54B25) to LED

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How to upgrade headlights on BMW E46 325xi (M54B25) to LED

Options:

• LED bulb replacement
• Full LED projector retrofit

LED bulb replacement:

• Choose H7 LED bulbs (for low beam) and H7 or H1 (for high beam)
• Ensure proper heat dissipation and beam pattern
• May require load resistors to prevent error messages
• Installation:
  1. Remove headlight assembly
  2. Replace halogen bulbs with LED equivalents
  3. Install load resistors if necessary
  4. Reassemble and adjust beam pattern

Full LED projector retrofit:

• Choose a complete retrofit kit (e.g., Morimoto XB LED)
• Installation steps:
  1. Disassemble headlight housing
  2. Remove original projectors and bulbs
  3. Install new LED projectors and driver boards
  4. Reassemble housing, ensuring proper sealing
  5. Calibrate and align new headlights

Note: LED upgrades may require coding with BMW-specific software to prevent error messages.