One problem related to sensing system camera has been reported for the 2019 Toyota 4Runner. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2019 Toyota 4Runner based on all problems reported for the 2019 4Runner.
Vehicle back-up camera works intermittantly, sometimes working when placed in reverse, other times showing a black screen when placed in reverse. Has not been a consistent enough problem for dealer repair/troubleshooting. A google search shows many 5th gen 4runner online web forms with lots of reports involving pinched, stretched, worn camera wiring harnesses inside the rear hatch or in the rubber wire boot between the body and rear hatch.