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Display messages
Cannot start engine See
Owner's Manual
Motor can be started again
Tyre pressure monitor
Display messages
Tyre press. monitor cur-
rently unavailable
Tyre press. monitor inoper-
ative
Possible causes/consequences and
Try to start the engine again.
#
If the engine does not start, consult a qualified specialist workshop.
#
* 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.
#
Connect a suitable charger approved for Mercedes-Benz with sufficient charge output to the jump-start connec‐
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tion point of the 12 V battery (
The 48 V battery is charged via the voltage converter in the vehicle.
* The 48 V battery has been charged automatically via the voltage converter.
Start the engine and drive the vehicle for a while to charge the 12 V battery and the 48 V battery.
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Possible causes/consequences and
* There is interference from a powerful radio signal source. As a result, no signals from the tyre pressure sensors are
being received. The tyre pressure monitoring system is temporarily unavailable.
The tyre pressure monitoring system will restart automatically as soon as the cause has been rectified.
Drive on.
#
* The tyre pressure monitoring system is malfunctioning.
M M
Solutions
page 400).
/
M M
Solutions
Internal use only
Display messages and warning/indicator lamps 489
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