Mercedes-Benz GL Operator's Manual page 241

Display messages
G
WARNING
If the 42 indicator lamp remains off even after performing the above corrective
steps, do not have any children 12 years old and under and other small individuals use the front-
passenger seat until the system has been repaired.
Possible causes/consequences and M Solutions
X
Visit a qualified specialist workshop immediately.
I n f o r m a t i o n P r o v i d e d b y :
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239
Z