CARS.COM — Vehicles affected by service bulletin: 2014 Mercedes-Benz S-Class 2015 Mercedes-Benz S-Class The problem: The engine and transmission may not meet factory operational specifications.

The TCM, or Transmission Control Module, is a key piece of any automatic transmission. Here's how it works in your car and how to fix it.

Freightliner says the Mercedes-Benz Automated Gear Shift (AGS) transmission for Freightliner Business Class M2 vehicles was designed to make driving easier and more efficient while increasing overall ...