2011 Mercedes R-Class Owner's Manual - Page 111

Steering wheel driving without the steering wheel adjustment feature locked could cause the driver to lose control of the vehicle. The electrical steering wheel adjustment feature can be operated at any time. Therefore, do not leave children unattended in the vehicle, or with access to an unlocked vehicle. A child's unsupervised access to a vehicle could result in an accident and/or serious personal injury. X 109 Make sure that the key is in position 2 in the ignition lock. X To switch on: press button : repeatedly until the desired ventilation level is set. Adjusting the steering wheel manually i You can open the side windows and the tilt/sliding sunroof with the key (Y page 89). The seat ventilation of the driver's seat automatically switches to the highest level. X To switch off: press button : repeatedly until all the indicator lamps go out. 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 too many electrical consumers are switched on. X : Release handle ; To adjust the steering wheel height = To adjust the steering wheel position (fore-and-aft adjustment) X Switch off electrical consumers which you do not need, such as the rear window defroster or interior lighting. Once the battery is sufficiently charged, the seat ventilation will switch back on automatically. Steering wheel Important safety guidelines G Warning Do not adjust the steering wheel while driving. Adjusting the steering wheel while driving, or Pull release handle : out completely. The steering column is unlocked. X Adjust the steering wheel to the desired position. X Push release handle : in completely until it engages fully. The steering column is locked. X Check if the steering column is locked. When doing so, try to push the steering wheel up or down or try to move it in the fore-and-aft direction. Z Seats, steering wheel and mirrors