Page 435 of 521
Display messages
Possible causes/consequences and M
MSolutions
? Coolant Stop vehicle
Switch engine off *T
he coolant is too hot. #
Stop theve hicle immediately, paying attention toroad and traf fic conditions, and switch off the engine. &
WARNING Danger of bu rns when opening the bonn et
If yo u open the engine bonn etwhen the engine has overheated or during a fire inthe engine compartment, you
could come into contact wi thhot gases or other escaping operating fluids. #
Before opening the bonn et, allow the engine tocool down. #
Intheeve nt of a fire inthe engine compartment, keep the engine bonn etclosed and call thefire service. #
Wait until the engine has cooled down. #
Make sure that the air supply tothera diator is not obstructed. #
Avoiding high loads on the engine, drive on tothe nearest qualified specialist workshop. In doing so, ensure that
th e coolant temp erature display remains below 120 °C. 432
Displaymessa ges and warning/indicator lamps
Page 436 of 521
Display messages
Possible causes/consequences and M
MSolutions
# See Owner's Manual *T
he battery is not being charge d.
* NO
TEPossible engine damage if you continue driving #
Do not continue driving under any circum stances. #
Consult a qualified specialist workshop. #
Stop theve hicle immediately, paying attention toroad and traf fic conditions, and switch off the engine. #
Consult a qualified specialist workshop.
# Start engine See Owner's
Manual *T
he engine is off and the battery charge leve l is too lo w. #
Switch off electrical consumers that are not required. #
Lea vethe engine running for a few minutes, or drive for a longer dis tance.
The battery charge s. Display messages and
warning/indicator lamps 433
Page 437 of 521
Display messages
Possible causes/consequences and M
MSolutions
# Stop vehicle See Owner's
Manual *T
he battery is no longer being charge d and the battery charge leve l is too lo w.
* NO
TEPossible engine damage if you continue driving #
Do not continue driving under any circum stances. #
Consult a qualified specialist workshop. #
Pull over and stop theve hicle safely as soon as possible, paying attention toroad and traf fic conditions. Do not
continue driving under any circums tances. #
Switch off the engine. #
Consult a qualified specialist workshop.
# Stop vehicle Leave engine
running *T
he battery charge leve l is too lo w. #
Pull over and stop theve hicle safely as soon as possible, paying attention toroad and traf fic conditions. Do not
continue driving under any circums tances. #
Start the engine. #
Wait until the display message disappears before pulling away. 434
Display messages and warning/indicator lamps
Page 438 of 521

Display messages
Possible causes/consequences and M
MSolutions
4 Check eng. oil lev. when
next refuelling *T
he engine oil le vel has dropped tothe minimum le vel.
* NO
TEEngine dama gecaused bydriving with insuf ficient engine oil #
Avoid long journe yswith insuf ficient engine oil. #
Check the engine oil le vel when next refuelling.
To p up the engine oil (→ page 350).
No tes on engine oil (→ page412).
4 Engine oil level Stop vehi-
cle Switch engine off *D
isplay message only for cer tain engines:
The engine oil le vel is too lo w.
* NO
TEEngine dama gecaused bydriving with insuf ficient engine oil #
Avoid long journe yswith insuf ficient engine oil. #
Pull over and stop theve hicle safely as soon as possible, paying attention toroad and traf fic conditions. Do not
continue driving under any circums tances. #
Switch off the engine. #
Check the engine oil le vel.
To p up the engine oil (→ page 350).
No tes on engine oil (→ page412). Displ
aymessa ges and warning/indicator lamps 435
Page 439 of 521
Display messages
Possible causes/consequences and M
MSolutions
4 Engine oil level Reduce oil
level *D
isplay message only for cer tain engines:
The engine oil le vel is too high.
* NO
TEEngine dama gecaused bydriving with excess engine oil #
Avoid long journe yswith excess engine oil. #
Consult a qualified specialist workshop immediately and ha veengine oil siphoned off.
4
Add 1 litre engine oil when
next refuelling *D
isplay message only for cer tain engines:
The engine oil le vel has dropped tothe minimum le vel.
* NO
TEEngine dama gecaused bydriving with insuf ficient engine oil #
Avoid long journe yswith insuf ficient engine oil. #
Check the engine oil le vel when next refuelling.
To p up the engine oil (→ page 350).
No tes on engine oil (→ page412). 436
Displaymessa ges and warning/indicator lamps
Page 440 of 521
Display messages
Possible causes/consequences and M
MSolutions
4 Engine oil pressure Stop
Switch off engine *D
isplay message only for cer tain engines:
The engine oil pressure is too lo w.
* NO
TEEngine dama gecaused bydriving with insuf ficient engine oil pressure #
Avoid long journe yswith insuf ficient engine oil pressure. #
Pull over and stop theve hicle safely as soon as possible, paying attention toroad and traf fic conditions. Do not
continue driving under any circums tances. #
Consult a qualified specialist workshop.
5 Engine oil level cannot be
measured *T
he electrical connection tothe oil le vel sensor is inter rupte d or the oil le vel sensor is faulty.
The engine oil le vel has dropped tothe minimum le vel. #
Consult a qualified specialist workshop.
Ø Refill AdBlue See Owner’s
Manual *
The AdBlue ®
leve l has fallen below there ser verange. #
Refill Ad Blue ®
immediately . Display messages and
warning/indicator lamps 437
Page 441 of 521
Display messages
Possible causes/consequences and M
MSolutions
! Clean the fuel filter *
Ve hicles with a diesel engine: thewate r inthe fuel filter must be drained off. #
Consult a qualified specialist workshop.
Ø Refill AdBlue Eng. start not
possible *
The AdBlue ®
tank is em pty. yo u can no lon gerst art the engine #
Top up at least 4.5 l of AdBlue ®
. #
Switch the ignition on.
Yo u can restart the engine af ter appro ximately one minu te.
Ø
Check AdBlue See Owner’s
Manual *
The AdBlue ®
sy stem is malfunctioning. #
Consult a qualified specialist workshop.
8 Reserve fuel level *T
he fuel le vel has dropped into there ser verange. #
Refuel. 438
Displaymessa ges and warning/indicator lamps
Page 442 of 521
Display messages
Possible causes/consequences and M
MSolutions
Ø Eng. start not possible in
XXX km *
The AdBlue ®
sy stem is malfunctioning. #
Consult a qualified specialist workshop immediatel y.
¸
Replace air cleaner *
Ve hicles with a diesel engine: the engine air filter is dirty and must be replaced. #
Consult a qualified specialist workshop.
Ø Eng. start not possible *
The AdBlue ®
sy stem is malfunctioning. you can no lon gerst art the engine #
Consult a qualified specialist workshop immediatel y.
Ø
Refill AdBlue No start in
XXX km *
The AdBlue ®
leve l is only suf ficient forth e displa yed dis tance. #
Refill Ad Blue ®
immediately .
% The message disappea rsafte r driving at a speed abo ve15 km/h for appro ximately one minu te. Displ
aymessa ges and warning/indicator lamps 439