The 2009 Chrysler Aspen has 4 recalls, the most serious being Takata airbag inflators on both the driver and passenger sides that can rupture and send metal fragments into the cabin, causing serious injury or death.
The remaining recalls share the same airbag inflator concern across both seating positions. Multiple filings cover overlapping populations of vehicles with these inflators, but the core danger is the same regardless of which filing applies: in a crash where the airbag deploys, the inflator housing can burst and scatter sharp metal pieces toward the driver and front passenger. Prior repair attempts in earlier campaigns did not fully resolve the issue for all affected vehicles, which is why additional recalls were filed covering expanded groups of vehicles.
On the mechanical side, the rear axle pinion nut can loosen and allow the driveshaft to separate from the rear axle, or detach from the vehicle entirely. If the nut works loose enough to cause the rear differential to fail suddenly, the rear wheels can lock up without warning, which can cause the driver to lose control, particularly at highway speeds.