Mercedes-Benz GLS Owner's Manual page 506

Display messages
Ø
XX,X l Top up AdBlue
Switch on ignition, wait 60
sec. or eng. start not poss.
¯
AdBlue system fault See
Owner's Manual
¯
AdBlue system fault Emer-
gency op. in XXX miles See
Owner's Manual
Possible causes/consequences and
* The AdBlue ®
tank is empty. You can no longer start the engine.
Add at least the amount of AdBlue
#
Switch on the ignition and wait for approximately 60 seconds.
#
Start the engine.
#
* The AdBlue
®
system is malfunctioning.
Consult a qualified specialist workshop immediately.
#
* The AdBlue
®
system is malfunctioning. Performance will be reduced once the remaining distance displayed has
been covered.
Consult a qualified specialist workshop immediately.
#
Display messages and warning/indicator lamps 503
M M Solutions
®
displayed ( page 220).
/