Lincoln MKZ trunk not opening with key fob or inside button, battery draining issue on Lincoln MKZ

Some Lincoln MKZ owners report experiencing issues with their trunk not opening using the key fob or inside button, as well as battery draining problems. A common cause for these malfunctions is a dead key fob battery, which should be checked and replaced for proper functionality. In cases where the trunk remains inaccessible, some owners find that replacing the trunk module and programming it may be necessary. When facing a dead battery, utilizing the Manual Key Override feature can provide a solution by allowing manual access to the trunk. Additionally, some users have successfully resolved similar issues by performing a reset procedure, which involves disconnecting the car's battery for a few minutes. Signal interference is another factor that can impact the key fob's operation, so ensuring there are no disruptions is advisable. Other potential causes include worn buttons, poor battery contact, water damage, defective key fobs, receiver module issues, a dead 12-volt battery, and unpaired keys that may require reprogramming. To address battery draining concerns, it is recommended that owners have their vehicle's electrical system inspected by a qualified mechanic to diagnose and resolve the source of the issue. If these troubleshooting steps do not resolve the problems, seeking assistance from a professional mechanic or dealership with expertise in Lincoln vehicles may be necessary.