See also:

Tire tread
WARNING Although the applicable federal motor vehicle safety laws consider a tire to be worn when the tread wear indicators (TWI) become visible at approximately 1/16 in (1.6 mm), we recomme ...

Problems with the seat ventilation
If one or all of the indicator lamps in the seat ventilation button are flashing, the seat ventilation has switched off automatically. The vehicle's electrical system voltage is too low because ...

Exterior & Styling
Particularly from the rear, the GL's appearance looks a bit like Mercedes' original M-Class — so much so that a passenger walked up to an older M thinking it was the GL. The GL550's 21-inch wheels ...