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Display messages
?
Check Coolant Level See
Operator's Manual
Regeneration not possi-
ble
DEF (Diesel Exhaust Fluid)
Display messages
å
Refill Additive See Opera-
tor's Manual
å
Refill Additive Starts
until Emerg. Op.: XXX
See Operator's Manual
Display messages and warning and indicator lamps 351
Possible causes/consequences and
Wait until the engine has cooled down.
#
Ensure that the air supply to the engine radiator is not obstruc‐
#
ted.
* The coolant level is too low.
& WARNING Risk of scalding from hot coolant
The engine cooling system is pressurized, particularly when the
engine is warm. If you open the cap, you could be scalded by hot
coolant spraying out.
Let the engine cool down before opening the cap.
#
When opening the cap, wear protective gloves and safety
#
glasses.
Open the cap slowly to release pressure.
#
* NOTE Engine damage due to insufficient coolant
Avoid long journeys with insufficient coolant.
#
Top up coolant (
#
* Not all conditions have been met for regeneration of the diesel par‐
ticulate filter .
Continue driving as normal until all conditions have been met for
#
regeneration of the diesel particulate filter.
The load condition of the diesel particulate filter is over 50 % and
the message still appears on the instrument cluster.
Visit a qualified specialist workshop.
#
Possible causes/consequences and
* In addition, the yellow å DEF indicator lamp lights up on the
instrument cluster and a warning tone sounds.
The DEF supply has fallen below the first warning threshold.
Add at least 2.5 gal (9.5 l) of DEF (
#
The å DEF indicator lamp only disappears when the vehicle
is stationary, at the latest after 20 seconds, as soon as you
switch on the ignition or start the engine after topping up.
* In addition, the yellow DEF indicator lamp lights up and a warning
tone sounds.
The DEF supply has fallen below the reserve mark.
After the message appears for the first time, the remaining DEF sup‐
ply will last for approximately 1200 miles (1900 km). The engine can
then only be started another 16 times. The number of remaining
engine starts
XX
(16 to 1) is shown in the message every time the
engine is started.
M M
Solutions
page 268).
/
M M
Solutions
page 130).
/
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