Driver assistance is intermittent. When I first got the car, we spent an extra 3 hours at the pickup to get the camera replaced. Things have been great for 9 months, but now driver assistance goes on and off. Usually works in the morning, but not later in the day. But the other day, didn't work in the morning and worked for part of the drive home from work. I've got an appointment to have them look at it soon. Bad luck I guess since I don't see many complaints. Or perhaps they didn't fix the full problem on day one. Really miss it in stop and go traffic.