The National Highway Traffic Safety Administration (NHTSA) is looking into potential problems with power steering that could befall Ram 1500 owners. Trucks from the 2013 model year through 2016 are now under investigation, and with the popularity of pickups in North America, it’s a large investigation. 1.1 million pickups are part of this federal probe that began on August 4.

What exactly is the issue with the Ram 1500? That’s what NHTSA hopes to uncover with its investigation, but owners are reporting either partial or total loss of power steering. The agency has 380 reports from owners thus far, with the most recent coming on August 7. It involved a 2014 Ram 1500 with 118,000 miles that lost power steering while towing a camper trailer. Other owners relay similar experiences, though fortunately, no injuries have been reported thus far. However, NHTSA does mention three accidents that could be related to the failures.