Mercedes-Benz S-Class Saloon W223 2021 Owner's Manual page 568

566 Display messages and warning/indicator lamps
Display messages
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
Connect a suitable charger approved for Mercedes-Benz with sufficient charge output to the jump-start connection
#
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.
#
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.
& WARNING There is a risk of an accident if the tyre pressure monitoring system is malfunctioning
The tyre pressure monitoring system cannot issue a warning if there is pressure loss in one or more of the tyres.
Tyres with insufficient tyre pressure may impair the driving characteristics as well as steering and braking.
Have the tyre pressure monitoring system checked at a qualified specialist workshop.
#
Solutions
M
page 383).
/
Solutions
M
P223 0288 02