How to Replace a Headlamp on a Freightliner M2

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Replacing a headlamp on a Freightliner M2 is necessary when the headlamp burns out. The headlamp used is a halogen lamp which can be purchased at any truck parts store or even the Freightliner dealer. Always perform a walkaround inspection when replacing the light to ensure there are no other lights that have burnt out and require replacement. The headlamp itself is simple to access and will take a few minutes to replace.

  • Ensure the truck is parked on a flat and level surface and that the parking brake is set.

  • Open the hood for access to the headlamp. Locate the back of the headlamp on the back of the hood.

  • Unclip the wiring harness going in to the back of the headlamp assembly. The harness will unlock by pulling the clips apart and pulling off the headlamp socket.

  • Turn the socket counterclockwise and pull it out of the headlamp assembly. Replace it with the new headlamp and twist it in clockwise until it locks in place.

  • Push the wiring harness onto the back of the socket. The harness will lock in place as well.

  • Close the hood and secure it by locking the straps in place. Test the headlamp to ensure it is working properly.

Tips & Warnings

  • The bulb required is an H3 halogen headlight bulb.
  • Do not touch the glass part of the bulb as the oils in the skin can cause the bulb to overheat and cause the bulb to burn out prematurely.

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References

  • "Freightliner Business Class M2 Service Manual 2002 thru 2011"; Freightliner Corporation; 2011
  • Photo Credit Thomas Northcut/Photodisc/Getty Images
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