At a glance
What can fail
Screws holding the engine bay fuse box can loosen over time, causing the fuse box to vibrate excessively and damage the fuses inside. Damaged fuses may disable vehicle functions without warning, including the engine, power steering, and brake assist systems.
What the fix does
Mercedes-Benz will mail you instructions to have a dealer inspect and tighten the fuse box screws as needed.
Summarized — see the official notice for exact wording, dates, and contacts.