Electrical Problem, 2014 Jeep Grand Cherokee Overland, 3.0 Diesel

Electrical problem. ABS and Traction Control lamps on dash are on. Speedometer is flickering. MPG average indicator is all over the place. EVIC displays messages to "service four wheel drive" and "service ABS". On first occurrence (178 miles on vehicle) the throttle quit working and it said "Service Electronic Throttle." Had to coast to a stop on side of freeway. On second occurrence (1300 miles) it unexpectedly applied the brakes on its own, and likely only on the left side because the vehicle instantly swerved to the left and into on coming lanes of traffic. Luckily no cars were there and I had time to react and pull it back into my lane.