See also:

On-board diagnostic interface
WARNING If you connect equipment to the on-board diagnostics interface, it can affect the operation of the vehicle systems. This can impair the operating safety of your vehicle while driving ...

Automatic anti-glare mirrors
WARNING If incident light from headlamps is prevented from striking the sensor in the rear-view mirror, for instance, by luggage piled too high in the vehicle, the mirror's automatic ant ...

The Inside
There are some nice, high-grade materials in the R-Class' cabin, but it's showing its age and would have benefited from an update like the exterior received. The most disappointing part of the c ...