MERCEDES-BENZ CLS COUPE 2022 Owners Manual

Warning/indicator lamp Possible causes/consequences and
P Solutions
Note the messages on the instrument display.
If the coolant temperature display is at the lower end of the temperature scale: 
Consult a qualiNed specialist workshop.
If the coolant temperature display is at the upper end of the temperature scale: 
Exit the vehicle and keep a safe distance from it until the engine has cooled down. 
Check the coolant level (  pag
e 310). 
Make sure that the air supply to the radiator is not obstructed. 
Avoiding high loads on the engine, drive to the nearest q
ualiNed specialist workshop. In doing so, ensure that the
coolant temperature display remains below 120°C.

Warning/indicator lamp Possible causes/consequences and
P Solutions

Brakes
Warning/indicator lamp Possible causes/consequences and
P Solutions

Warning/indicator lamp Possible causes/consequences and
P Solutions
Consult a qualiNed specialist workshop.
Q
Br
ake system warning lamp
(red) * The red brake warning lamp is lit while the vehicle is running.
Possible causes:
= The br
ake force boosting is malfunctioning and the braking characteristics may be aMected.
= There is insuPcient brake Ouid in the brake Ouid reservoir. 
Note the messages on the instrument display. &
WARNING Risk of accident and injur
y if brake force boosting is malfunctioning
If brake force boosting is malfunctioning, increased brake pedal force may be necessary for braking. The braking
c
haracteristics may be impaired. The braking distance can increase in emergency braking situations. 
Stop in a safe location immediately. Do not continue driving! 
Consult a q
ualiNed specialist workshop. &
WARNING Risk of an accident due t
o low brake Ouid level
If the brake Ouid le
vel is too low, the braking eMect and the braking characteristics may be impaired. 
Stop the vehicle as soon as possible, paying attention to road and tr
aPc conditions. Do not continue driving. 
Consult a q
ualiNed specialist workshop. 
Do not top up the brake Ouid. Display messages and warning/indicator lamps
441

Driving systems
Warning/indicator lamp Possible causes/consequences and
P Solutions
/
W arning lamp for distance
warning function * The red distance warning lamp lights up while the vehicle is in motion.
The distance to the vehicle in front is too small for the speed selected.
If t here is an additional warning tone, you are approaching an obstacle at too high a speed. 
Be prepared to brake immediately. 
Increase the distance.
Function of Active Brake Assist (  pag
e 204).

Warning/indicator lamp Possible causes/consequences and
P Solutions

Warning/indicator lamp Possible causes/consequences and
P Solutions
Drive on carefully. 
Have the brake system checked immediately at a q ualiNed specialist workshop.

Warning/indicator lamp Possible causes/consequences and
P Solutions

Tyre pressure monitor
Warning/indicator lamp Possible causes/consequences and
P Solutions
w
T yre pressure monitoring
system warning lamp Oashes*The yellow tyre pressure monitor warning lamp (pressure loss/malfunction)
Oashes f
or approximately one minute and
then remains lit.
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. w
T
yre pressure monitoring
system warning lamp lights
up * The yellow tyre pressure monitoring system warning lamp (pressure loss/malfunction) is lit.
The tyre pressure monitoring system has detected tyre pressure loss in at least one of the tyres. &
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. 446
Display messages and warning/indicator lamps

Warning/indicator lamp Possible causes/consequences and
P Solutions
Stop the vehicle in accordance with the tr aPc conditions. 
Check the tyre pressure and the tyres. Display messages and warning/indicator lamps
447