MERCEDES-BENZ A-CLASS SALOON 2022 Owners Manual

Display messages
Possible causes/consequences and P Solutions 
If the display message does not disappear, consult a q ualiNed specialist workshop immediately. Drive care-
fully.

Display messages
Possible causes/consequences and P Solutions
z
%

Display messages
Possible causes/consequences and P Solutions
Active Brake Assist Func-
tions limited See Owner's
Manual * For vehicles with the Driving Assistance Package, the following functions may be temporarily unavailable or only parti-
all y available:
= Active Brake Assist with cross-traPc function
= Evasive Steering Assist
= PRE!

Display messages
Possible causes/consequences and P Solutions
Device detected at diagnos-
tics connection See Own-
er's Manual * The vehicle functions for fault detection are restricted.
At least one of the main functions of the Mercedes me connect system is malfunctioning. 
Observe the notes on the diagnostics connection (  pag
e 39).
Consult a q
ualiNed specialist workshop. Battery
Display messages
Possible causes/consequences and P Solutions
=
12 V battery See Owner's
Manual * The vehicle is
oM and t
he state of charge of the 12 V battery is too low. 
Switch oM electr
ical consumers that are not required. 
Drive for 30!

Display messages
Possible causes/consequences and P Solutions
* NOTE Possible engine damage if you continue driving 
Do not continue driving under any circumstances. 
Consult a q
ualiNed specialist workshop. 
Stop immediately in accordance with the tr
aPc conditions and switch oM the vehicle. 
Consult a q
ualiNed specialist workshop.
=
Stop vehicle See Owner's
Manual * The 12 V battery is no longer being charged and the state of charge is too low.
* NOTE P
ossible engine damage if you continue driving 
Do not continue driving under any circumstances. 
Consult a q
ualiNed specialist workshop. 
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.462
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and P Solutions
=
Stop vehicle Leave engine
running * The 12 V battery charge level is too low. 
Stop the vehicle immediately in accordance with the tr aPc conditions. Do not continue driving. 
Leave the engine running. 
If the display message disappears: drive on. 
If the display message does not disappear: consult a q
ualiNed specialist workshop. Tyre pressure monitor
Display messages
Possible causes/consequences and P Solutions
Tyre press. monitor cur-
rently unavailable * There is interference from a powerful radio signal source As a result, no signals from the tyre pressure sensors are
being r
eceived. The tyre pressure monitoring system is temporarily unavailable.
The tyre pressure monitoring system will restart automatically as soon as the cause has been rectiNed.
Drive on
Tyre press. monitor inoper-
ative * The tyre pressure monitoring system is malfunctioning. &
WARNING Ther
e is a risk of an accident if the tyre pressure monitoring system is malfunctioning
The tyre pressure monitoring system cannot issue a warning if there is pressure loss in one or more of the tyres.
T
yres with insuPcient tyre pressure may impair the driving characteristics as well as steering and braking. 
Have the tyre pressure monitoring system checked at a q
ualiNed specialist workshop. Display messages and warning/indicator lamps
463

Display messages
Possible causes/consequences and P Solutions
Tyre press. monitor inoper-
ative No wheel sensors * The wheels
Ntt ed do not have suitable tyre pressure sensors. The tyre pressure monitoring system is deactivated. 
Fit wheels with suitable tyre pressure sensors.

Display messages
Possible causes/consequences and P Solutions

Display messages
Possible causes/consequences and P Solutions

Display messages
Possible causes/consequences and P Solutions &
WARNING Risk of an accident due t o insuPcient tyre pressure
= The tyr
es can burst.
= The tyres can wear excessively and/or unevenly.
= The driving characteristics as well as the steering and braking may be greatly impaired.
You could then lose control of the vehicle. 
Observe the recommended tyre pressures. 
Adjust the tyre pressure if necessary. 
Stop the vehicle in accordance with the tr
aPc conditions. 
Check the tyre pressure ( pag
e 369) and the tyres. 
When the tyre pressure is correct, restart the tyre pressure loss warning system (  pag
e 372).
Check tyre pressures then
restart Run Flat Indicator * The tyre pressure loss warning system generated a display message and has not been restarted since. 
When the tyre pressure is correct, restart the tyre pressure loss warning system (  pag
e 372).
Run Flat Indicator inopera-
tive * The tyre pressure loss warning system is malfunctioning. 
Consult a q
ualiNed specialist workshop. Display messages and warning/indicator lamps
467