Mercedes-Benz S-Class Saloon 2021 Owner's Manual page 555

552 Display messages and warning/indicator lamps
552
Display messag Displa y messages es
Possible to start the engine
again
T T yr yre pr e pressur essure monit e monitor or
Display messag Displa y messages es
Tyre press. monitor cur-
rently unavailable
Tyre press. monitor inoper-
ative
Possible causes/conseq P ossible causes/consequences and uences and
Connect a suitable charger approved for Mercedes-Benz with su cient 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/conseq P ossible causes/consequences and uences 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 recti ed.
Drive on.
#
* The tyre pressure monitoring system is malfunctioning.
& W W ARNING
ARNING 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 insu cient tyre pressure may impair the driving characteristics as well as steering and braking.
Have the tyre pressure monitoring system checked at a quali ed specialist workshop.
#
M M Solutions Solutions
page 438).
/
M M Solutions Solutions