Nissan ARIYA 2023 Owners Manual
9.7.2.1. When towing a trailer
Depending on the weight of the vehicle and trailer and the steepness of the slope, there may be a tendency for the vehicle to move backwards when starting from a standstill. When this occurs, you can use the parking brake switch in the same way as a conventional lever type parking brake.
Before starting on sloping roads when towing a trailer, be sure to read the following to prevent the vehicle from moving backward unintentionally.
Release the parking brake switch as soon as the EV system is delivering enough torque to the wheels.
Owners Manual