The first probe covers 106,803 Jeep Grand Cherokee models from the 2012 model year for a potential fault with the SUV's power steering hose. The NHTSA is looking into whether the Grand Cherokee's power steering hose is prone to failure, which could cause a fluid leak resulting in an engine fire.
In a separate investigation, the NHTSA is looking into the rear differential of Ram 1500 pickup trucks from the 2009-10 model years. The agency has received 12 complaints of the Ram's rear-wheel locking up at speed, eight of which occurred at over 35mph. Although no injuries or deaths have been reported, the fault has allegedly caused at least one accident.
The exact cause of the rear differential remains unknown, but reports have implicated the truck's differential pinion nut.
Chrysler isn't commenting on the ongoing investigation but says it is cooperating with the NHTSA.
"Chrysler Group takes seriously every customer complaint and is cooperating fully with NHTSA," a Chrysler spokesman told Automotive News.
No recall has been issued in either case.
