The Mercedes S-class (W221) has a large number of electronic systems, some components of which are often not built. These include:
- Problems with adaptive dynamic swapping of seats after 50,000. km
- Perebreating with the operation of the system of unkeyed access due to getting water into the control unit after 50,000. km
- The failure of the heater motors is over 60 thousand tons. km
- Warmth heating of seats after 100,000. km
- The problem with the indication on the headgear.
- Problems with the boot of the boot door and the roof hatch.