Mercedes-Benz S-Class, Operator'S Manual

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Display messages
Possible causes/consequences and M M Solutions
Û
48 V Battery See Opera-
tor's Manual
* The 48 V on-board electrical system has function restrictions. The availability of convenience functions may be
restricted.
#
Visit a qualified specialist workshop immediately.
Ý
Please Wait Charging 48 V
Battery…
* The 48 V battery is discharged. You have switched on the ignition while the 12 V battery was being charged with a
suitable charger or while another vehicle was providing starting assistance.
The discharged 48 V battery is charged automatically via the voltage converter. After a few minutes, the driver dis‐
play will show the Engine Can Now Be Started display message.
#
Start the engine.
#
Drive the vehicle for a while to charge the 12 V battery and the 48 V battery after disconnecting the charger
from the vehicle.
If the Engine Can Now Be Started display message does not appear after a few minutes:
#
Try to start the engine again.
#
If the engine does not start, consult a qualified specialist workshop.
Cannot Start Engine See
Operator's Manual
* The charge level of the 48 V battery is too low. You can no longer start the engine.
#
Switch off electrical consumers that are not required.
Display messages and warning/indicator lamps 523