MERCEDES-BENZ A-CLASS SALOON 2022 Owners Manual

Exhaust gas
aser treatmentDisplay messages
Possible causes/consequences and P Solutions
Ú
Refill AdBlue See Owner

Display messages
Possible causes/consequences and P Solutions
Ú
XX,X l Top up AdBlue
Switch on ignition, wait 0
sec. or eng. start not poss. *
The AdBlue n
t
ank is empty. You can no longer start the vehicle. 
Add at least the amount of AdBlue n
displa
yed ( page 188). 
Switch on the vehicle and wait for approximately 60 seconds. 
Start the vehicle.

Display messages
Possible causes/consequences and P Solutions

Engine oil
Display messages
Possible causes/consequences and P Solutions
5
Add 1 litre engine oil when
next refuelling * The engine oil level has dropped to the minimum level.
* NOTE Engine damag e caused by driving with insuPcient engine oil 
Avoid long journeys with insuPcient engine oil. 
When next refuelling, add 1 litre of engine oil ( pag
e 334).
Notes on engine oil ( pag
e 396).
5
Engine oil level Reduce oil
level * The engine oil level is too high.
* NOTE Engine damag
e caused by driving with excess engine oil 
Avoid long journeys with excess engine oil. 
Consult a q
ualiNed specialist workshop immediately and have the engine oil level reduced.
5 Engine oil level Stop vehi-
cle Switch engine off * The engine oil level is too low.
* NOTE Engine damag
e caused by driving with insuPcient engine oil 
Avoid long journeys with insuPcient engine oil. 
Stop the vehicle immediately in accordance with the tr
aPc conditions. Do not continue driving. Display messages and warning/indicator lamps
471

Display messages
Possible causes/consequences and P Solutions 
Switch oM the vehicle. 
Add 1 l of engine oil (  pag
e 334). 
Check the engine oil level.
Notes on engine oil ( pag
e 396).
5
Engine oil pressure Stop
Switch off engine * The oil pressure is too low.
* NOTE Engine damag
e caused by driving with insuPcient oil pressure 
Avoid driving with insuPcient oil pr
essure. 
Stop the vehicle immediately in accordance with the tr
aPc conditions. Do not continue driving. 
Switch oM t
he vehicle. 
Consult a q
ualiNed specialist workshop.
5
Engine oil level cannot be
measured * The electrical connection to the oil level sensor has been interrupted or the oil level sensor is faulty. 
Consult a q
ualiNed specialist workshop.472
Display messages and warning/indicator lamps

Warning and indicator lamps
Overview of indicator and warning lamps
Some systems will perform a self-test when the
v
ehicle is switched on. Some indicator and warn-
ing lamps may brieOy light up or Oash. This behav-
iour is non-critical. These indicator and warning
lamps indicate a malfunction only if they light up
or Oash aser the vehicle has been started or dur-
ing a journey.
Standard instrument display Widescreen cockpit instrument display
Depending on the display settings, the positions
of t

he indicator lamps on the instrument display
may diMer from the example shown.
Indicator and warning lamps
Occupant safety
6 Restraint system ( pag
e 475)

Driving systems
/
Distance warning (  pag e 484)

Occupant safety
Warning/indicator lamp Possible causes/consequences and
P Solutions
6
R estraint system warning
lamp * The restraint system red warning lamp is lit while the vehicle is on.
The restraint system is malfunctioning ( pag e 48). &
WARNING Risk of injur
y due to malfunctions in the restraint system
Components in the restraint system may be activated unintentionally or not deploy as intended in an accident. 
Have the restraint system checked and repaired immediately at a q
ualiNed specialist workshop. Plug-in hybrid:
&
DANGER Risk of f
atal injuries due to restraint system malfunctions
Components in the restraint system may be activated unintentionally or not deploy as planned in an accident. In the
e
vent of an accident, the high-voltage on-board electrical system may not be deactivated as intended.
You may suMer an electric shock if you touch the damaged components of the high-voltage on-board electrical sys-
tem. 
Have the restraint system checked and repaired immediately at a q
ualiNed specialist workshop. 
Aser an accident, switc
h oM the vehicle immediately. 
Drive on carefully. 
Note the messages on the instrument display. 
Consult a q
ualiNed specialist workshop immediately. Display messages and warning/indicator lamps
475

Warning/indicator lamp Possible causes/consequences and
P Solutions

Warning/indicator lamp Possible causes/consequences and
P Solutions
Ú
Sy stem error warning lamp * The red system error warning lamp is lit while the vehicle is in a state of operational readiness