How to Replace Headlight Assemblies 2007-2012 Nissan Altima

Introduction

Replacing the headlight assemblies on a 2007-2012 Nissan Altima is a straightforward process that can significantly improve your vehicle's visibility and appearance. This tutorial provides step-by-step instructions to help you replace the headlight assembly safely and efficiently.

Step 1: Gather Required Tools

Before you begin, ensure you have the following tools ready:

• Phillips Bit in a Ratchet
• Phillips Head Screwdriver
• 10mm Socket
• Trim Tool Set
• Needle Nose Pliers
• Push Pin Pliers
• Ratchet
• Gloves
• Safety Glasses

Step 2: Remove the Front Bumper

1. Remove Clips: Use a trim removal tool to take off the clips on the top of the bumper and grille.
2. Unscrew: Locate and remove the 10mm screw holding the front bumper. This can be accessed by pulling back the fender liner.
3. Repeat on Other Side: Perform the same steps on the opposite side.
4. Remove Splash Shield Clips: Take off the clips on the front engine splash shield as well as three Phillips head screws connecting the inner fender liner to the bumper.
5. Unclip Bumper: Start at one corner and unclip the bumper, then do the same on the other corner, and carefully remove the bumper.

Step 3: Remove the Headlight Assembly

1. Locate Bolts: There are four 10mm bolts holding the headlight. Remove them carefully.
2. Disconnect Harness:
   • Squeeze the tabs on the front clip to release the connector.
   • Remove the connectors from all bulbs by pushing on the tabs and pulling them out.
3. Twist and Pull: For any bulb that is taped together, untwist and pull it out.
4. Release Final Connectors: Use pinch clips to remove the last connectors before pulling the headlight assembly straight out.

Step 4: Install the New Headlight Assembly

1. Attach Harness: Connect the harness onto the new headlight assembly.
2. Secure with Bolts: Install the four screws: one on the side of the fender, three on top, and any additional screws needed.
3. Reinstall the Bumper: Align one side of the bumper, then the other. Secure two clips on top to hold it in place while you finish the installation.
4. Adjust Bumper Fit: Ensure the bumper fits under the headlight and push it into place using a trim tool if necessary.

Step 5: Reassemble the Vehicle

1. Insert the Fender Liner: Push the inner fender liner back into place and secure it.
2. Install Splash Shield Clips and Screws: Replace the clips and three Phillips head screws on each side of the splash shield.

Step 6: Aim the Headlights

1. Prepare Vehicle: Make sure tires are properly inflated and remove any excess weight from the vehicle.
2. Find a Level Wall: Measure 25 feet from a wall and mark the ground.
3. Position Vehicle: Drive the vehicle to the marked spot with headlights off.
4. Measure Headlight Dot: Measure from the ground to the center dot on the headlight lens and transfer this measurement to the wall.
   • Mark down 4 inches for the driver's side and 2 inches for the passenger's side.
5. Adjust Headlights: Turn on the headlights and use a Phillips head screwdriver to adjust the headlight until the beam aligns with the tape marks on the wall.

Conclusion

You have successfully replaced and adjusted the headlight assemblies on your Nissan Altima. Regularly check and maintain your headlights for optimal visibility and safety. If you encounter any issues during the process, consult your vehicle’s manual or seek professional assistance.