One problem related to exterior lighting has been reported for the 2018 Lincoln MKZ. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2018 Lincoln MKZ based on all problems reported for the 2018 MKZ.
Rear lift gate assembly center led strip is filled with water. This causes an electrical short condition that results in the reverse lights to be on at all times when driving. Vehicle will not pass MA inspection and has been cited for this infraction. No damage to lift gate, either a part or manufacturing defect.