Mercedes-Benz C-Class Wagon Owner's Manual page 529

526 Display messages and warning/indicator lamps
Display messages
Cannot start vehicle See
Owner's Manual
Possible to start the engine
again
Tyre pressure monitor
Display messages
Tyre press. monitor cur-
rently unavailable
Tyre press. monitor inoper-
ative
Possible causes/consequences and
If the vehicle does not start, consult a qualified specialist workshop.
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* The state of charge of the 48 V battery is too low. You can no longer start the vehicle.
Switch off electrical consumers that are not required.
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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 vehicle and drive 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.
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* The tyre pressure monitoring system is malfunctioning.
M M Solutions
page 344).
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M M Solutions