engine MERCEDES-BENZ CLA COUPE 2019 Owners Manual

Display messages
Possible causes/consequences and M
MSolutions
Limiter passive *I
fyo u depress the accelera tor pedal be yond the pressure point (kickdown), the limiter is switched topassive mode
(/ page 205).
Speed limit (winter tyres)
XXX km/h *Y
ou ha vereached thestored maximum speed for winter tyres. It is not possible toexc eed this speed.
ð Maximum speed exceeded *T
he maximum permissible speed has been exceeded (for cer tain countries only). #
Drive more slowl y.Engine
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. 550
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions #
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 tothe nearest qualified specialist workshop. In doing so, ensure that
th e coolant temp erature display remains below 120 °C.
Top up coolant See Own-
er’s Manual *T
he coolant le vel is too lo w.
* NO
TEEngine dama gedue toinsuf ficient coolant #
Avoid long journe yswith insuf ficient coolant. #
Add coolant (/ page 451).
? *T
hefan mo tor is defective. #
Avoiding high loads on the engine, drive tothe nearest qualified specialist workshop. In doing so, ensure that
th e coolant temp erature display remains below 120 °C.
#
See Owner's Manual *T
he battery is not being charge d. Display messages and
warning/indicator lamps 551

Display messages
Possible causes/consequences and M
MSolutions
* 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.
# 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 in accordance with the tra ffic conditions. Do not con‐
tinue driving under any circums tances. #
Switch off the engine. #
Consult a qualified specialist workshop. 552
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions
# 12 V battery 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 will charge.
If th e message appears while the engine is running, this indicates an on-board elect rical sy stem malfunction. #
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 in accordance with the tra ffic conditions. Do not con‐
tinue driving under any circums tances. #
Lea vethe engine running. #
Wait until the display message disappears before pulling away.
æ Reserve fuel level *T
he fuel supply has dropped into there ser verange. #
Refuel.
!
Clean the fuel filter *
Ve hicles with diesel engines: the fuel filter is dirty or thewate r inthe fuel filter needs tobe drained. #
Consult a qualified specialist workshop. Display messages and
warning/indicator lamps 553

Display messages
Possible causes/consequences and M
MSolutions
¸ Replace air cleaner *
Ve hicles with diesel engines: the engine air filter is dirty and must be replaced. #
Consult a qualified specialist workshop.
Drive system Malfunction
Visit workshop *T
he drive sy stem is malfunctioning. #
Consult a qualified specialist workshop.
Drive system Malfunction
Stop Switch engine off *T
he drive sy stem is malfunctioning. #
Stop theve hicle immediately, paying attention toroad and traf fic conditions, and switch off the engine. #
Consult a qualified specialist workshop. Engine oil
Display messages
Possible causes/consequences and M MSolutions
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. 554
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions #
When next refuelling, add 1 litre of engine oil.
To p up engine oil (/ page 450).
No tes on engine oil (/ page519).
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 in accordance with the tra ffic conditions. Do not con‐
tinue driving under any circums tances. #
Switch off the engine. #
Top up with 1 l engine oil. #
Check the engine oil le vel.
To p up engine oil (/ page 450).
No tes on engine oil (/ page519). Displ
aymessa ges and warning/indicator lamps 555

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 vethe engine oil siphoned off.
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 driving with insuf ficient engine oil pressure. #
Pull over and stop theve hicle safely as soon as possible in accordance with the tra ffic conditions. Do not con‐
tinue driving under any circums tances. #
Consult a qualified specialist workshop. 556
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions
5 Engine oil level cannot be
measured *T
he electrical connection tothe oil le vel sensor has been inter rupte d or the oil le vel sensor is faulty. #
Consult a qualified specialist workshop. Exhaust
gas af tertre atment Display messages
Possible causes/consequences and M MSolutions
Ú Refill AdBlue See Owner’s
Manual *
The AdBlue ®
leve l has fallen below there ser verange. #
Top up at least 5 l of AdBlue ®
(/ page 179).
Ú Top up AdBlue Perf.
reduced in XXX miles See
Owner's Manual *
The low AdBlue ®
leve l will lead tolimited per form ance af terth ere maining dis tance displ ayed has been driven. #
Top up at least 5 l of AdBlue ®
(/ page 179). Displ
aymessa ges and warning/indicator lamps 557

Display messages
Possible causes/consequences and M
MSolutions
Ú Top up AdBlue Perf.
reduced: XXX km/h No
start in XXX km *
The low AdBlue ®
leve l will lead tolimited per form ance abo vethe speed displa yed.
Af terth e displa yedre maining dis tance has been co vered, it will no longer be possible tostart the engine. #
Top up at least 5 l of AdBlue ®
(/ page 179).
Ú Refill AdBlue Engine start
not possible *
The AdBlue ®
tank is em pty. Yo u can no lon gerst art the engine. #
Top up at least 5 l of AdBlue ®
(/ page 179). #
Switch on the ignition.
Yo u can restart the engine af ter appro ximately one minu te.
¯
AdBlue system fault See
Owner's Manual *
The AdBlue ®
sy stem is malfunctioning. #
Consult a qualified specialist workshop immediatel y.558
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions
¯ AdBlue system fault Perf.
reduced in XXX miles See
Owner's Manual *
The AdBlue ®
sy stem is malfunctioning. Performance will be reduced af terth ere maining dis tance displ ayed has
been co vered. #
Consult a qualified specialist workshop immediatel y.
¯
AdBlue system fault Perf.
reduced: XXX km/h No
start in XXX km *
Po we rre duction due totheAd Blue ®
sy stem fault. Af terth e dis tance displ ayed has been co vered, it will no longer
be possible tostart the engine. #
Consult a qualified specialist workshop immediatel y.
¯
AdBlue system fault Engine
start not possible *
The AdBlue ®
sy stem is malfunctioning. You can no lon gerst art the engine. #
Consult a qualified specialist workshop immediatel y. Displ
aymessa ges and warning/indicator lamps 559