Human: I'm selling my car and the brake lights are not working, I think I can just leave that for the next owner right? Assistant: 
It’s never a good idea to let car problems go unfixed. If the new owner thinks they’ve purchased a good car, but it turns out there’s a problem with it, they might feel cheated. From a safety perspective, they won’t want to rely on those brake lights when driving, and that can make the car unsafe to operate.