Driving to work on flat level dry road and traction control light would flash a couple of times and then go off again, it did this a couple of times within a few miles and then the ABS light, the Service 4WD light, and the traction control light all came on and stayed on. The park assist also got disabled at the same time. I was in 2 wheel drive mode at the time. I shut off the vehicle to power cycle but the lights remained on when I restarted the engine. I drove to work with it remaining on. After a day or two while again driving with the lights still on, I felt a slight shudder in the vehicle and then the lights all went off and everything worked as normal. Now it's a daily occurrence for it to come on for a while and then sometimes it's cleared when I restart the vehicle later in the day. Definitely something intermittent, I've heard stories on forums that it may be a rear wheel speed sensor bad, or maybe even wiring issue. Definitely an inconvenience in my line of work where I do need to use 4WD sometimes to get to work. While the service 4WD light is on, you cannot select 4WD with the electronic control.