At a glance
What can fail
Fuel injector seals can harden from heat and alcohol in fuel, allowing fuel to leak into the engine compartment. Turbo pressure forces the fuel out, where it may drip onto hot engine parts and ignite.
What the fix does
Fuel injector seals, fuel lines, and soundproofing pad will be replaced with improved versions. Engine sealing will be enhanced to prevent lubricant leakage.
Summarized — see the official notice for exact wording, dates, and contacts.