Page 399 of 522

398 Practical hintsWhat to do if …Text messagesDisplay message
Possible cause/consequence
Possible solution
ABS
ABS, ESP
inoperative
See Operator’s Man.
ABS, ESP
® as well as PRE-SAFE
® 
have switched off due to a malfunc-
tion. 
BAS is also switched off.
The brake system is still functioning 
normally but without the ABS, BAS, 
ESP
® and PRE-SAFE
® available.
Continue driving with added caution. 
Wheels will lock during hard braking, reduc-
ing steering capability.
Have the system checked at an authorized 
Mercedes-Benz Center as soon as possible.
Failure to follow these instructions increases 
the risk of an accident.
ABS, ESP
unavailable
See Operator’s Man.
ABS, ESP
® as well as PRE-SAFE
® 
were deactivated because of insuffi-
cient power supply. The charging 
voltage has fallen below 10 volts.
The brake system still functions nor-
mally but without the ABS, BAS, 
ESP
® and PRE-SAFE
® available.
When the voltage is above this value again, the 
ABS, ESP
® and PRE-SAFE
® are operational 
again and the message should disappear.
If the message does not disappear:
Have the system checked at an authorized 
Mercedes-Benz Center as soon as possible. 
     
        
        Page 403 of 522
402 Practical hintsWhat to do if …Display message
Possible cause/consequence
Possible solution
ESP
inoperative
See Operator’s Man.
The ESP
® as well as BAS and 
PRE-SAFE® have detected a mal-
function and switched off.
The ABS may not be operational.
The brake system is still functioning 
normally but without the ABS, BAS, 
ESP
® and PRE-SAFE
® available.
Continue driving with added caution.
Have the system checked at an authorized 
Mercedes-Benz Center as soon as possible.
Failure to follow these instructions increases 
the risk of an accident. 
     
        
        Page 408 of 522

407 Practical hints
What to do if …
Display
Possible cause/consequence
Possible solution
P
Gear selector lever
in Park position
You have tried to start the engine with the 
KEYLESS-GO* start/stop button with the 
gear selector lever not in positionP.
Place the gear selector lever in 
positionP.
You have tried to turn off the engine with the 
KEYLESS-GO* start/stop button with the 
gear selector lever not in positionP.
P/N
Shift gear select. lever
to Neutral or Park
You have tried to start the engine with the 
KEYLESS-GO* start/stop button while the 
gear selector lever was in positionR orD.
Place the gear selector lever in positionP 
orN. Make sure the brake pedal is de-
pressed. 
PRE-SAFE
inoperative
See Operator’s Man.
PRE-SAFE
® itself has failed. All other occu-
pant safety systems, such as the air bags, are 
still available.
Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
If ESP
® and PRE-SAFE
® malfunction messag-
es are displayed simultaneously, PRE-SAFE
® 
has been deactivated as a result of these 
malfunctions. All other occupant safety sys-
tems, such as the air bags, are still available. 
     
        
        Page 410 of 522

409 Practical hints
What to do if …
Display message
Possible cause/consequence
Possible solution
Tire pressure is
only displayed
after driving for
a few minutes
Vehicles with Advanced TPMS*:
The tire inflation pressure is being checked.
Drive the vehicle for a few minutes.
Tire pressure
monitor
inoperative
The Advanced TPMS* (Canada only) is 
malfunctioning.
Have the Advanced TPMS* checked by an authorized 
Mercedes-Benz Center.
Tire pressure
monitor
inoperative
No wheel sensors
There are wheels without appropriate wheel 
sensors mounted (e.g. winter tires).
Have the Advanced TPMS* checked by an authorized 
Mercedes-Benz Center.
Have the appropriate wheel sensors installed by an 
authorized Mercedes-Benz Center.
Tire pres. monitor
No wheel sensors
One or more sensors malfunction (e.g. bat-
tery in one or more wheel sensor is empty).
One or more wheels without appropriate 
wheel sensors mounted (e.g. spare tire).
Have the Advanced TPMS* checked by an authorized 
Mercedes-Benz Center.
Have the wheel sensors installed by an authorized 
Mercedes-Benz Center.
The tire pressure for the respective tire is shown in the 
multifunction display. 
     
        
        Page 414 of 522

413 Practical hints
What to do if …
Display symbol
Display message
Possible cause/consequence
Possible solution
(USA only);(Canada only)3
EBV, ABS, ESP
inoperative
See Operator’s Man.
ABS, ESP
®, EBP as well as PRE-SAFE
® 
have switched off due to a malfunction. 
BAS is also switched off.
The brake system is still functioning nor-
mally but without the ABS, BAS, ESP
® and 
PRE-SAFE
® available.
Continue driving with added caution.
Adjust driving to be consistent with 
reduced braking responsiveness.
Visit an authorized Mercedes-Benz 
Center as soon as possible.
Release parking
brake
You are driving with the parking brake 
set.
Release the parking brake 
(page 55). 
Check
brake fluid level
There is insufficient brake fluid in the 
reservoir.
Risk of accident! Stop the vehicle in a 
safe location as soon as it is safe to do 
so and notify an authorized 
Mercedes-Benz Center. Do not add 
brake fluid! This will not solve the 
problem.
Warning!
G
Driving with the message
 Check brake 
fluid level
 displayed can result in an ac-
cident. Have your brake system checked im-
mediately.
Do not add brake fluid before checking the 
brake system. Overfilling the brake fluid res-
ervoir can result in spilling brake fluid on hot 
engine parts and the brake fluid catching 
fire. You can be seriously burned.
!
If you find that the brake fluid in the brake 
fluid reservoir has fallen to the minimum mark or 
below, have the brake system checked for brake 
pad thickness and leaks.