2020 MERCEDES-BENZ S-CLASS SALOON LONG ignition

Display messages
Possible causes/consequences and M
MSolutions
d Vehicle is operational
Switch off ignition before
exiting *Y
ou are leaving theve hicle in a ready-to-drive state. #
When you lea vetheve hicle, switch off the ignition, secure theve hicle against rolling away and take theke y with
yo u. #
Ifyo u do not lea vetheve hicle, switch off the electrical consumers, e.g. the seat heating. Otherwise, the12 V
battery may dischar geand it will then be possible tostart theve hicle only with the aid of a second battery
(s ta rting assis tance).
ï Operation only possible in
transmission position P *
The ball neck will not swivel because transmission position h,kor neutral iis selected. #
Dep ress the brake pedal. #
Enga gepark position j.
ï
Trailer coupling in motion *T
he ball neck will retract/ extend.
Do not attem pttospeed up, slow down or initiate the swivel mo vement using your hand, foot or other aids. During
th e swivel mo vement, do not couple a trailer.
When the ball neck has reached an operational position, the display message will disappear.
ï
Check trailer hitch lock *T
he trailer hitch is not operational during a journey with a trailer. &
WARNING Risk of an accident if the ball neck is not loc ked
The trailer may become de tach ed. Display messages and
warning/indicator lamps 503

Display messages
Possible causes/consequences and M
MSolutions #
Untilthen, alw ays select park position jmanually before you swit choff the engine. #
Before leaving theve hicle, apply the electric parking brake.
Risk of vehicle rolling away
Driver's door open Trans-
mission not in P *
The driver's door is not fully closed and transmission position h,kor neutral iis selected.
The vehicle may rollaw ay. #
Select pa rkposition jwhen switching off theve hicle.
Risk of vehicle rolling away
Apply parking brake to park *
The transmission is malfunctioning. Park position jcann otbe selected. #
Park theve hicle safely. #
Use the electric parking brake tosecure theve hicle against rolling away. #
On gradients, turn the front wheels so that theve hicle will rollto wa rdsth eke rb if it starts moving.
Risk of vehicle rolling away
N activated manually No
automatic switch to P *
While theve hicle was at a standstill or driving at very low speed, neut rali was engaged with the engine running
or the ignition switched on.
* NO
TEDama getotheve hicle due toitro lling away When
the ignition is being switched off or the driver's door opened, automatic engagement of park position j
is deactivated.
The vehicle may rollaw ay. #
Beready tobrake. #
Do not lea vetheve hicle unattended. 514
Displaymessa ges and warning/indicator lamps

Brakes
Displ
aymessages
Possible causes/consequences and M
MSolutions
! Parking brake See Owner's
Manual *
The yellow ! indicator lamp is lit. The elect ric pa rking brake is malfunctioning.
To appl y: #
Switch the ignition off and switch it back on. #
Apply the electric parking brake manually (/ page217).
If it is not possible toapply the electric parking brake: #
Consult a qualified specialist workshop. #
Where necessar y,also secure the par kedve hicle against rolling away.
* The yellow ! indicator lamp and there d! indicator lamp are lit. The elect ric pa rking brake is malfunction‐
ing.
To release: #
Swit chthe ignition off and switch it back on. #
Release the electric parking brake manually (/ page217).
or #
Release the electric parking brake automatically (/ page216).
If it is still not possible torelease the electric parking brake: #
Do not continue driving. Consult a qualified specialist workshop. Display messages and
warning/indicator lamps 517

Display messages
Possible causes/consequences and M
MSolutions
* The yellow ! indicator lamp is lit and there d! indicator lamp is flashing. The electric parking brake is mal‐
functioning.
The electric parking brake could not be applied or released. #
Swit chthe ignition off and switch it back on.
To appl y: #
Release and then apply the electric parking brake manually (/ page217).
To release: #
Apply and then release the electric parking brake manuall y.
If it is not possible toapply the electric parking brake or there d! indicator lamp continues toflash: #
Do not continue driving. Consult a qualified specialist workshop. #
Where necessar y,also secure the par kedve hicle against rolling away.
* The yellow ! indicator lamp is lit and there d! indicator lamp flashes for appro ximately ten seconds af ter
th e electric parking brake has been applied or released. It then remains lit or goes out. The electric parking brake is
malfunctioning.
If th ech arge leve l is too lo w: #
Char gethe12 V batter y.
To appl y: 518
Displaymessa ges and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions
! Turn on the ignition to
release the parking brake *
The red! indicator lamp is lit.
Yo u ha veattem ptedto release the electric parking brake with the ignition switched off. #
Switch on the ignition.
J Brake immediately *A
malfunction has occur red while the HOLD function was activated.
A horn may also sound at regular inter vals.
Yo u cannot start the engine. #
Immediately depress the brake pedal firm lyuntil the display message disappears.
Yo u can restart the engine.
J
Check brake fluid level *T
here is insuf ficient brake fluid in the brake fluid reser voir. &
WARNING Risk of an accident due tolow brake fluid le vel
If th e brake fluid le vel is too lo w,the braking ef fect and the braking characteristics may be impaired. #
Stop theve hicle as soon as possible, paying attention toroad and traf fic conditions. Do not continue driv‐
ing. #
Consult a qualified specialist workshop. #
Do not top up the brake fluid. 520
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions
Active Steering Assist inop-
erative *A
ctive Steering Assist is malfunctioning. Active Dis tance Assi stDISTRONIC remains available. #
Consult a qualified specialist workshop.
Active Steering Assist cur-
rently unavailable due to
multiple emergency stops *A
ctive Steering Assist is temp orarily una vailable due tomultiple emergency stops. #
Take ove rth esteering and stop in accordance with the tra ffic conditions. #
Swit chthe ignition off and switch it back on.
Ac tive Steering Assist is available once more.
Ø
Beginning emergency stop *Y
our hands are not on thesteering wheel. The Active Steering Assist will initiate an emer gency stop (/ page 237). #
Put your hands on thesteering wheel.
Information on cancelling an emer gency stop (/ page 239).
Ø *A
ctive Steering Assist has reached the sy stem limits (/ page 237).
Yo u ha venot steered independently for a considerable period of time. #
Take ove rth esteering and drive on in accordance with the traf fic conditions.
Active Emergency Stop
Assist currently unavailable
See Owner's Manual *A
ctive Emergency Stop Assist is temp orarily una vailable. #
Consult a qualified specialist workshop.
Active Emergency Stop
Assist inoperative *A
ctive Emergency Stop Assist is malfunctioning. #
Consult a qualified specialist workshop. Display messages and
warning/indicator lamps 525

Display messages
Possible causes/consequences and M
MSolutions
Û 48 V battery See Owner's
Manual *T
he 48 V on-board electrical sy stem has function restrictions. Comfort functions may be restricted. #
Consult a qualified specialist workshop immediatel y.
Ý
Please wait 48 V battery
charging *T
he 48 V battery is dischar ged. You ha veswitched on the ignition while the12 V battery was being charge d with a
suitable charge r or while ano ther vehicle was pr oviding starting assis tance.
The discha rged 48 V battery is charge d automatically via thevo ltage con verter. Af ter a few minutes, the driver dis‐
play will show theMotor can be started again display message. #
Start the engine. #
Drive theve hicle for a while tocharge the12 V battery and the 48 V battery af ter disconnecting thech arger
from theve hicle.
If th eMotor can be started again display message does not appear af ter a few minutes: #
Tryto start the engine again. #
Ifth e engine does not start, consult a qualified specialist workshop.
Cannot start engine See
Owner's Manual *T
hecharge leve l of the 48 V battery is too lo w.You can no lon gerst art the engine. #
Switch off electrical consumers that are not required. 540
Displaymessa ges and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions
Ø XX,X l Top up AdBlue Igni-
tion ON, wait 60s, or
engine start not possible *
The AdBlue ®
tank is em pty. Yo u can no lon gerst art the engine. #
Add at least the amount of AdBlue ®
displ ayed (/ page210). #
Switch on the ignition and waitfor appro ximately 60 seconds. #
Start the engine.
¯
AdBlue system fault See
Owner's Manual *
The AdBlue ®
sy stem is malfunctioning. #
Consult a qualified specialist workshop immediatel y.
¯
AdBlue system malfunction
Emergency op. in XXX km
See Owner's Manual *
The AdBlue ®
sy stem is malfunctioning. Performance will be reduced once there maining dis tance displ ayed has
been co vered. #
Consult a qualified specialist workshop immediatel y.546
Displaymessa ges and warning/indicator lamps