The 2015 Lincoln MKZ Hybrid has been known to experience issues with the power trunk not closing completely. This problem can be frustrating for owners and may have several potential causes. Let's explore the common reasons for this issue and possible solutions.

Common Causes

Power Trunk Module Failure

One of the most frequent causes of trunk closure problems in the 2015 MKZ Hybrid is a faulty power trunk module. This module controls the opening and closing functions of the trunk lid. When it malfunctions, the trunk may not close fully or respond to button commands.

Software Glitches

Sometimes, the issue can be caused by software glitches in the vehicle's electrical system. These glitches can interfere with the proper operation of the power trunk mechanism.

Misaligned Trunk Latch

A misaligned trunk latch can prevent the trunk from closing completely. This misalignment can occur due to normal wear and tear or as a result of a minor collision.

Worn or Damaged Components

Worn or damaged components such as the trunk struts, hinges, or the power close motor can also contribute to closure problems.

Troubleshooting Steps

  • Check for any obstructions in the trunk area that might prevent full closure
  • Inspect the trunk latch and striker plate for any visible damage or misalignment
  • Test the trunk operation using both the key fob and the interior trunk release button
  • Listen for any unusual noises during the closing process, which might indicate a mechanical issue

Potential Solutions

Module Reset

Sometimes, a simple module reset can resolve the issue:

  • Remove the power liftgate fuse (usually #7) for about 20 seconds
  • Reinsert the fuse and test the trunk operation

Software Update

Visit your local Lincoln dealer to check if there's an available software update for your vehicle's electrical system. This may address any programming issues causing the trunk malfunction.

Professional Inspection

If the problem persists, it's advisable to have a professional inspection performed. A certified technician can:

  • Check the power trunk module for faults
  • Adjust the trunk latch alignment if necessary
  • Inspect and replace any worn components

Module Replacement

In some cases, replacing the power trunk module may be necessary. This should be done by a qualified technician, as the new module will require programming to work with your specific vehicle.

Preventive Measures

To help prevent future issues:

  • Regularly clean and lubricate the trunk latch mechanism
  • Avoid forcing the trunk closed if it's not operating correctly
  • Address any unusual noises or behaviors promptly to prevent more serious problems

By understanding these common issues and solutions, you can better address trunk closure problems in your 2015 Lincoln MKZ Hybrid. Remember, if you're unsure about performing any diagnostics or repairs yourself, it's always best to consult with a professional technician.