Mercedes-Benz S-Class Owner's Manual page 580

578 Display messages and warning/indicator lamps
Display messages Possible causes/consequences and
AdBlue system fault Perf.
reduced: XXX mph No start
in XXX miles
¯
* The AdBlue
AdBlue system fault Engine
start not possible
Ø
* The low AdBlue
Top up AdBlue Perf.
reduced: XXX km/h No
start in XXX km
Ø
* The low AdBlue
Top up AdBlue Perf.
reduced in XXX miles See
Owner's Manual
® system is malfunctioning. You can no longer start the engine.
Consult a qualified specialist workshop immediately.
#
®
level will lead to limited performance above the speed displayed.
After the displayed remaining distance has been covered, it will no longer be possible to start the engine.
® level will lead to limited performance after the remaining distance displayed has been driven.
Top up AdBlue ® immediately (
# →
M M Solutions
page 213).