Mercedes-Benz S-Class 2009 - Manual (Page 528)

Vehicle status messages in the multifunction display
526
Display messages Possible cause/consequence Possible solution
Right Side Curtain
Airbag Malfunction
Service Required
The right window curtain air bag may not
work properly. X Drive with added caution to the nearest
authorized Mercedes-Benz Center.
G Warning!
In the event a malfunction of the SRS is indicated as outlined above, the SRS may not be operational.
For your safety, we strongly recommend that you contact an authorized Mercedes-Benz Center immediately to have the system checked.
Otherwise the SRS may not be activated when needed in an accident, which could result in serious or fatal injury, or it might deploy
unexpectedly and unnecessarily which could also result in injury.
Practical hints