One problem related to assist has been reported for the 2019 Volkswagen Jetta. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2019 Volkswagen Jetta based on all problems reported for the 2019 Jetta.
While using the lane keeping assistance function, driving at night, if a vehicle in the oncoming lane has bright lights or a larger vehicle with lights mounted higher, the system will pull sharply into the oncoming traffic and will, if not corrected, cross over the center line. This happens when the system shows two green lines indicating it is active and has identified the lane lines. The behavior is very consistent. I have not noticed a relationship between the behavior and speed.