One problem related to wiring has been reported for the 2018 Subaru Forester. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2018 Subaru Forester based on all problems reported for the 2018 Forester.
There have been several times that the car will not lock due to a type of trip or wiring with the locking system. While the car is turned off and stationary, right before locking the door, there is a clicking sound and the driver's side door light flashes. The driver's side door is closed, even if the electrical system acts like it is trying to close the door. This prevents the car from locking, due to some type of trip in the door sensor. It might be a trip between the karr alarm system and the door sensor installed in the car. I've attempted to repair or resolve this since I bought the car and it is has yet to be repaired.