Safety systems
Display messages
Possible causes/consequences and
M
MSolutions !÷
currently unavail‐ currently unavail‐
able See Owner's able See Owner's
Manual Manual ABS (Anti-lock Braking System), ESP
®
(Electronic Stability Pro-
gram), BAS (Brake Assist System), the HOLD function, PRE-SAFE ®
,
hill start assist and ESP ®
trailer stabilisation are temporarily
unavailable.
The adaptive brake lights, BAS PLUS with Cross-Traffic Assist,
COLLISION PREVENTION ASSIST PLUS, PRE ‑SAFE®
PLUS and
PRE‑SAFE ®
Brake may also have failed.
In addition, the ÷,åand! warning lamps light up in the
instrumen tcluster.
ATTENTION ASSIST is deactivated.
For example, the on-board voltage may be insufficient.
G WARNING
The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock if you
brake hard, for example.
The steerability and braking characteristics may be severely affec-ted. The braking distance may increase in an emergency braking
situation.
If ESP ®
is not operational, ESP ®
is unable to stabilise the vehicle.
There is an increased danger of skidding and risk of an accident.
X Drive on carefully.
If the display message disappears, the functions mentioned
above are available again.
If the multifunction display still shows the display message: X Drive on carefully.
X Consult aqualified specialist workshop. !÷
inoperative See inoperative See
Owner's Manual Owner's Manual ABS,E
SP®
,B AS ,the HOLD function, PRE-SAFE ®
,h ill start assist
and ESP ®
trailer stabilisation are not available due to amalfunc-
tion.
The adaptive brake lights, BAS PLUS with Cross-Traffic Assist,
COLLISION PREVENTION ASSIST PLUS, PRE ‑SAFE®
PLUS and
PRE‑SAFE ®
Brake may also have failed.
In addition, the J,÷,åand! warning lamps light up
in the instrumen tcluster.
ATTENTION ASSIST is deactivated.
G WARNING 300
Display messagesOn-board computer and displays
Display messages
Possible causes/consequences and
M
MSolutions The brak
esystem continues to function normally, but without the
function slisted above. The wheels could therefore loc kifyou
brak ehard, fo rexample.
The steerabilit yand brakin gcharacteristics may be severely affec-
ted. The brakin gdistanc emay increase in an emergenc ybraking
situation.
If ESP ®
is no toperational, ESP ®
is unable to stabilis ethe vehicle.
There is an increase ddanger of skiddin gand ris kofana ccident.
X Drive on carefully.
X Consult aqualified specialist workshop immediately. ÷
inoperative See inoperative See
Owner'
sManual
Owner' sManual ESP
®
,B AS ,the HOLD function ,PRE-SAFE ®
,h ill start assist and
ESP ®
trailer stabilisation are no tavailable due to amalfunction.
The adaptive brak elights ,BAS PLU SwithC ross-Traffic Assist,
COLLISION PREVENTION ASSIST PLUS, PRE ‑SAFE®
PLU Sand
PRE ‑SAFE ®
Brake may also hav efailed.
In addition ,the ÷ andå warnin glamp sligh tupint he
instrumen tcluster.
The self-diagnosi sfunction ,for example, may no tbecomplete.
ATTENTION ASSIST is deactivated.
G WARNING
The brak esystem continues to function normally, but without the
function slisted above.
The brakin gdistanc emay thus increase in an emergenc ybraking
situation.
If ESP ®
is no toperational, ESP ®
is unable to stabilis ethe vehicle.
There is an increase ddanger of skiddin gand ris kofana ccident.
X Drive on carefully.
X Consult aqualified specialist workshop. Display
messages
301On-boardcomputer an ddisplays Z
Display messages
Possible causes/consequences and
M
MSolutions T!
÷
inoperative See inoperative See
Owner'
sManual
Owner' sManual EB
D( electronic brak eforce distribution), ABS, ESP ®
,B AS ,the
HOLD function ,PRE-SAFE ®
,h ill start assist and ESP ®
trailer sta-
bilisation are no tavailable due to amalfunction.
The adaptive brak elights ,BAS PLU SwithC ross-Traffic Assist,
COLLISION PREVENTION ASSIST PLUS, PRE ‑SAFE®
PLU Sand
PRE ‑SAFE ®
Brake may also hav efailed.
In addition ,the ÷ ,å and! warnin glamp sligh tupint he
instrumen tcluster and awarnin gtones ounds.
G WARNING
The brak esystem continues to function normally, but without the
function slisted above. The fron tand rear wheels could therefore
lock, fo rexample, if you brak ehard.
The steerabilit yand brakin gcharacteristics may be severely affec-
ted. The brakin gdistanc emay increase in an emergenc ybraking
situation.
If ESP ®
is no toperational, ESP ®
is unable to stabilis ethe vehicle.
There is an increase ddanger of skiddin gand ris kofana ccident.
X Drive on carefully.
X Consult aqualified specialist workshop immediately. J
Brake immediately Brake immediately Am
alfunction has occurred while th eHOLDf unction is active.
or
Wit hthe HOLD function activated, you have:
R opened th edriver's doo rand release dthe seat belt or
R switched of fthe engine
At onem ay also soun datregular intervals. If you attemp ttolock
th ev ehicle, th etoneb ecome slouder.
You canno tstart th eengine.
X Payin gattention to th etraffic situation ,immediately depress the
brak epedal firmly and hold until th edisplay message disap-
pears.
X Safeguar dthe vehicl eagainst rollin gaway (Y page 205).
You can restar tthe engine. J
Releas
eparking
Releas eparking
brake brake You are drivin
gwitht he parkin gbrak eapplied. Awarnin gton ea lso
sounds.
X Releas ethe parkin gbrake. 302
Display
messagesOn-boardcomputer an ddisplays
Display messages
Possible causes/consequences and
M
MSolutions PRE-SAFE
PRE-SAFE
inoperative See inoperative See
Owner'
sManual
Owner' sManual Importan
tfunction sofPRE-SAFE ®
hav efailed. Al lother occupant
safet ysystems ,e.g.a irbags, remain available.
X Consult aqualified specialist workshop immediately. PRE-SAFE PRE-SAFE
Functions cur‐ Functions cur‐
rently rently
limited
limited See
See
Owner' sManual
Owner' sManual PRE
‑SAFE ®
PLU SorP RE‑SAFE ®
Brake is temporarily inoperative.
Possibl ecauses:
R thef unction is impaire ddue to heav yrain or snow
R ther ada rsensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radi osta-
tion soro ther source sofelectromagnetic radiation
R AM Gvehicles: ESP ®
is deactivated
R thes ystem is outside th eoperating temperature range
R theo n-bo ardv oltag eistoolow
Once th ecauses listed abov enolonger apply, th edisplay message
goe sout.
PRE ‑SAFE ®
PLU Sand PRE ‑SAFE®
Brake are operational again.
If th edisplay message does no tdisappear:
X Pull ove rand stop th evehicl esafely as soo naspossible, paying
attention to roa dand traffic conditions.
X Safeguar dthe vehicl eagainst rollin gaway (Y page 205).
X Restart th eengine.
X AM Gvehicles: reactivat eESP®
(Y page 85). PRE-SAFE
PRE-SAFE
Functions limited Functions limited
See Owner'
sManual
See Owner' sManual PRE
‑SAFE ®
PLU SorP RE‑SAFE ®
Brake is unavailable due to amal-
function .BAS PLU SwithC ross-Traffic Assis tmay also hav efailed.
X Consult aqualified specialist workshop. 304
Display
messagesOn-boardcomputer an ddisplays
Tyres
Display messages
Possible causes/consequence
sand M
MSolutions Tyr
epressure
Tyr epressure
Check tyres
Check tyres The tyr
epressure loss warning system ha sdetecte das ignificant
loss in pressure.
Aw arnin gtone also sounds.
Possibl ecauses:
R yo uh avec hange dthe positions of the wheels and tyres or fitted
new wheels and tyres
R the tyr epressure in one or mor etyres is not correct
G WARNING
Underinflated tyres pose the following risks:
R the tyres ma yburst, especiall yasthe load and vehicl espeed
increase
R the tyres ma yweare xcessivel yand/or unevenly, which may
greatl yimpai rtyret raction
R the driving characteristics, as well as steering and braking ,may
be greatl yimpaired
There is ariskofana ccident.
X Stop the vehicl ewithou tmaking any sudden steering or braking
manoeuvres .Pay attentio ntothe traffi cconditions as yo udoso.
X Safeguard the vehicl etoprevent it fro mrolling away
(Y page 205).
X Check the tyres and ,ifnecessary ,follo wthe instructions for a
fla ttyre( Ypage 397).
X Check the tyr epressures and ,ifnecessary ,correct the tyre
pressure.
X Restart the tyr epressure loss warning system when the tyre
pressure is correct (Y page 422).Check tyr
epres‐
Check tyr epres‐
sures sures
the nrestar tRun
the nrestar tRun
Fla tIndicator
Fla tIndicator The tyr
epressure loss warning system generated adisplay mes-
sage and ha snot been restarted since.
X Set the correct tyr epressure in al lfou rtyres.
X Restart the tyr epressure loss warning system (Y page 422).Run Fla
tIndicator
Run Fla tIndicator
inoperative inoperative The tyr
epressure loss warning system is faulty.
X Visi taq ualified specialis tworkshop. 322
Displa
ymessagesOn-b oardcomputer an ddisplays