If your Ford Focus begins to open doors poorly or the trunk opening button does not work, the problem most likely lies in the key battery low.

Required tools and materials:

1. New lithium battery CR2032 3v (from higher to lower price):
   • Duracell CR2032
   • VARTA CR2032
   • Energizer CR2032
   • Maxell CR2032
   • Kodak CR2032
   • GP CR2032
   • Samsung CR2032
   • Sony CR2032
   • Supra CR 2032
2. Flat blade screwdriver

Key Battery Replacement Guide:

Step 1. Remove the rear key cover by prying the Ford emblem off the edge.

Step 2. Pull out the inserted battery and change with new one and that’s it.

Step 3. Click cover of the key and it’s ready for use.

Ford Focus Key Battery Change Video: