2010 Mercedes S-Class Owner's Manual - Page 270

268 Voice Control System troubleshooting Help window You can use the help window to view a selection of valid commands on the COMAND display. The help functions can be switched on or off via COMAND in the System menu (Y page 93). Spelling RThe letters of the English alphabet and the digits 0 - 9 may be used. the letters in blocks of 5 - 7 letters at a time. each individual letter clearly. RSpeak RSpeak Control systems Entering digits and spelling Entering digits RDigits from "Zero" to "Nine" may be used. RSpeaking phone numbers in digit blocks of 3 to 5 digits has proven a very reliable method for the input of phone numbers. What to do if ...Problem Possible cause/consequence Suggested solution X The Voice You have not operated the system Control from the driver's seat. System does not recognize commands. You have spoken unclearly, too loudly or too quietly. The blower could be set to the highest setting, vents could be pointing at microphones or wind noise could be created due to open windows. Operate the Voice Control System only by the driver as the microphone is geared to the driver side. Speak the commands in a continuous manner using a normal tone. Avoid loud disturbances. X X