Some early 2011 3.6-litre V6 models had major engine issues, requiring full engine replacement under warranty, while later engines are fine. First-year models may have occasional "clunk" noise when downshifting to first gear at speeds under 10 kph, with possible solutions that will first involve reprogramming the powertrain control module, then replacing the drivetrain control module, according to a technical service bulletin. If issue returns, it may be because of failure to install a retainer snap ring during production. Issues involving Bluetooth and iPod functions may require software update. Remote keyless-entry issues may be due to low battery in key-fob.
