Page 599 of 723

596 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
Check brake
fluid levelThere is insufficient brake fluid in the reser-
voir.Risk of accident!
Carefully stop the vehicle in a safe location or
as soon as it is safe to do so.
Engage the electronic parking brake
(
page 637).
Contact an authorized Mercedes-Benz Cen-
ter.
Do not add brake fluid! This will not solve the
problem.
(USA only)
(Canada only)
Warning!G
Driving with the message “Check brake fluid
level ” displayed can result in an accident.
Have your brake system checked immedi-
ately. Do not add brake fluid before check-
ing the brake system. Overfilling the brake
fluid reservoir can result in spilling brake flu-
id 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.
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Page 600 of 723
597 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
Brake immediatelyA malfunction has occurred while
DISTRONIC Plus* was switched on.While observing surrounding traffic condi-
tions and when it is safe, immediately de-
press the brake pedal firmly until the warning
message disappears.
Secure vehicle from rolling away before get-
ting out of it (
page 384).
(USA only)
(Canada only)
EBV, ABS, ESP
inoperative
See Oper. ManualESP®, EBP and ABS are switched off due to
a malfunction. BAS is also switched off. As
a result, PRE-SAFE
® is also inoperative.
BAS Plus* and PRE-SAFE
® Brake* are also
not 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.
(USA only)
(Canada only)
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Page 601 of 723
598 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
Service
See Oper. ManualCL 600:
The brake system sensors are malfunction-
ing. The brake system continues to function
normally with full brake force boost.Continue driving with added caution.
Have the system checked at an authorized
Mercedes-Benz Center as soon as possible.
(USA only)
(Canada only)
Brake wearThe brake pads have reached their wear
limit.Have the brake pads replaced as soon as
possible.
!Brake pad thickness must be visually
checked by a qualified technician at the intervals
specified in the Maintenance Booklet.
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Page 602 of 723
599 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
Parking brake
See Oper. ManualThe red indicator lamp for the electronic
parking brake is either on or off and the yel-
low warning lamp for the electronic parking
brake comes on.
The electronic parking brake is
malfunctioning.To release:
Pull handle of electronic parking brake
(
page 384).
or
Drive off carefully (page 384).
Contact an authorized Mercedes-Benz
Center as soon as possible.
or
Release electronic parking brake mechani-
cally (
page 637).
Contact an authorized Mercedes-Benz
Center as soon as possible.
To engage:
Switch off ignition and press handle for elec-
tronic parking brake until the warning mes-
sage on the multifunction display disappears.
(USA only)
(Canada only)
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Page 603 of 723
600 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
Parking brake
See Oper. ManualThe red indicator lamp for the electronic
parking brake flashes.
The power supply for the electronic parking
brake was malfunctioning or the electronic
parking brake was previously mechanically
released.Pull handle for electronic parking brake
(
page 384).
or
Carefully drive off (page 384).
or
Press handle for electronic parking brake un-
til the warning message disappears from the
multifunction display.
(USA only)
(Canada only)
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Page 604 of 723
601 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
Parking brake
See Oper. ManualThe red indicator lamp for the electronic
parking brake flashes and the yellow warn-
ing lamp for the electronic parking brake
comes on.
The electronic parking brake is
malfunctioning.Switch ignition off and back on again, and en-
gage or release electronic parking brake
(
page 384).
or
Carefully drive off (page 384).
Contact an authorized Mercedes-Benz
Center as soon as possible.
or
Release electronic parking brake mechani-
cally (
page 637).
Contact an authorized Mercedes-Benz
Center as soon as possible.
(USA only)
(Canada only)
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Page 605 of 723

602 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
Parking brake
See Oper. ManualWhen you engage or release the electronic
parking brake, the red indicator lamp for
the electronic parking brake flashes for
approx.10 seconds. Afterward, it goes out
or comes on continuously. The yellow warn-
ing lamp for the electronic parking brake
comes on.
The electronic parking brake is malfunction-
ing or overheated for example due to over-
or undervoltage.Carefully drive off (page 384).
Contact an authorized Mercedes-Benz
Center as soon as possible.
In the event of overvoltage or undervoltage:
Remove the cause of the overvoltage or und-
ervoltage, e.g. charge the battery or restart
the engine.
Switch ignition off and back on again, and en-
gage or release electronic parking brake
(
page 384).
If the electronic parking brake still cannot be re-
leased:
Release electronic parking brake mechani-
cally (
page 637).
Contact an authorized Mercedes-Benz
Center as soon as possible.
(Continued on next page)
(USA only)
(Canada only)
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Page 606 of 723

603 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
Parking brake
See Oper. ManualIf overheated:
Let vehicle cool down, and do not engage
electronic parking brake during this time.
or
Switch ignition off and back on again, and en-
gage or release electronic parking brake.
(USA only)
(Canada only)Parking brake
inoperativeWhen you engage or release the electronic
parking brake, the red indicator lamp for
the electronic parking brake flashes and
goes out after approx. 10 seconds. The yel-
low warning lamp for the electronic parking
brake comes on.
The electronic parking brake is
malfunctioning.Switch ignition off and back on again, and en-
gage electronic parking brake (
page 384).
If the electronic parking brake cannot be en-
gaged:
Shift the automatic transmission to P
(
page 389).
Protect vehicle from rolling away while
parked by using a chock from the vehicle tool
kit (
page 634).
Contact an authorized Mercedes-Benz
Center as soon as possible.
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