I have a 2019 T-boss 410, so it's not exactly the same. However, there's a switch on the brake assembly (usually under the hood) that I needed to adjust, since it wouldn't always start. I would step on the brake, and hit the key, and nothing. I located the switch and adjusted it, now no similar problems. The best thing I can suggest is to follow the brake linkage until you locate that switch. It's the same switch for the brake lights.