At a glance
What can fail
The retaining clip holding the gear shift cable to the shift lever can break if excessive side force is applied during shifts to first gear. A broken clip allows the cable to disconnect, leaving you unable to change gears.
What the fix does
Dealers will replace the gear shift cable retaining clip with a differently shaped clip that prevents breakage.
Summarized — see the official notice for exact wording, dates, and contacts.