Page 631 of 769
630 Practical hintsWhat to do if …?Display
Possible cause/consequence
Possible solution
Front Passenger
Airbag Enabled
See Oper. Manual
Front passenger front air bag is
activated while driving even
though a child, small individual,
or object below the system’s
weight threshold is on the front
passenger seat, or the front pas-
senger seat is empty. Objects
on the seat or forces acting on
the seat may make the system
sense supplemental weight.
Stop the vehicle in a safe location as soon as possible and check the front
passenger seat for the following:
Engage the electronic parking brake (
page 412).
Switch off the ignition (
page 365).
Remove child and child restraint from front passenger seat and properly
secure the child in rear seat employing the child restraint if necessary.
Remove any other items from on and around the front passenger seat and
make sure the storage bag on the back of the front passenger seat is emp-
ty.
Make sure that no objects which apply forces to the seat are present (e.g.
objects such as books, briefcases etc. lodged behind or around the seat,
head restraints pushing against roof etc.). The system may recognize such
forces as supplemental weight and sense that an occupant on the front
passenger seat is of a greater weight than actually present.
Keep the seat unoccupied, close the passenger door and switch on the ig-
nition (
page 365).
Monitor the 59indicator lamp right of the instrument cluster
(
page 51) and the multifunction display in the instrument cluster
(page 282) for the following:
(Continued on next page)
Page 632 of 769
631 Practical hints
What to do if …?
Display
Possible cause/consequence
Possible solution
Front Passenger
Airbag Enabled
See Oper. Manual
With the seat unoccupied and the ignition switched on (
page 365),
the 59indicator lamp right of the instrument cluster should
illuminate and remain illuminated, indicating that the OCS (
page 48)
has deactivated the air bag.
the message “Front Passenger Airbag Enabled See Oper. Manual” or the
message “Front Passenger Airbag Disabled See Oper. Manual” should not
appear in the multifunction display at any time the seat is unoccupied.
Wait at last 60 seconds for the system to complete the necessary check
cycles and to make sure neither message appears in the multifunction dis-
play.
If above conditions are met, you can occupy the front passenger seat again.
Depending on the front passenger classification sensed by the OCS
(
page 48), the 59indicator lamp will remain illuminated or go
out.
If above conditions are not met, the system is not working properly. Have the
system checked as soon as possible by an authorized Mercedes-Benz Center.
Warning!
G
If the 59indicator lamp re-
mains illuminated with an adult occupant on
the front passenger seat even after
performing the above corrective steps, do
not have any passenger use the front pas-
senger seat until the system has been re-
paired.
Page 647 of 769
646 Practical hintsWhat to do if …?Display
Possible cause/consequence
Possible solution
Parking Brake
See Oper. Manual
The 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 412).
or
Carefully drive off (
page 412).
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)
Page 649 of 769
648 Practical hintsWhat to do if …?Display
Possible cause/consequence
Possible solution
Parking Brake
See Oper. Manual
When 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 412).
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 412).
If the electronic parking brake still cannot be re-
leased:
Contact an authorized Mercedes-Benz
Center as soon as possible.
(Continued on next page)
(USA only)(Canada only)
Page 650 of 769
649 Practical hints
What to do if …?
Display
Possible cause/consequence
Possible solution
Parking Brake
See Oper. Manual
The 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 412).
or
Carefully drive off (
page 412).
Contact an authorized Mercedes-Benz
Center as soon as possible.
(USA only)(Canada only)
Page 651 of 769
650 Practical hintsWhat to do if …?Display
Possible cause/consequence
Possible solution
Parking Brake
See Oper. Manual
If 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
Inoperative
When 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 412).
If the electronic parking brake cannot be en-
gaged:
Shift the automatic transmission to park
positionP (
page 417).
Protect vehicle from rolling away while
parked by using a chock from the vehicle tool
kit (
page 683).
Contact an authorized Mercedes-Benz
Center as soon as possible.
Page 652 of 769
651 Practical hints
What to do if …?
Display
Possible cause/consequence
Possible solution
Please Release
Parking Brake
The red indicator lamp for the electronic
parking brake flashes and you also hear a
warning signal.
You are driving with the electronic parking
brake activated, or you are carrying out an
emergency brake application with the elec-
tronic parking brake (
page 412).
Release electronic parking brake.
or
Carefully drive off (
page 412).
or
Release the handle for electronic parking
brake.
(USA only)(Canada only)
Please Release
Parking Brake
The red indicator lamp for the electronic
parking brake flashes and the yellow warn-
ing lamp for the electronic parking brake
comes on. You also hear a warning tone.
The electronic parking brake is malfunction-
ing; braking action is restricted.
While driving:
Release the handle for electronic parking
brake.
While at a standstill:
Switch off ignition and press handle for elec-
tronic parking brake until the warning mes-
sage disappears from the multifunction
display.
Page 653 of 769
652 Practical hintsWhat to do if …?Display
Possible cause/consequence
Possible solution
Turn On the Ignition
to Release the
Parking Brake
The yellow indicator lamp for the electronic
parking brake comes on.
You have tried to release the electronic
parking brake, but the ignition was not
switched on.
Switch on the ignition (
page 365).
(USA only)(Canada only)
Inoperative
See Oper. Manual
ESP
® a s w e l l a s P R E - S A F E
® are switched off
due to a malfunction. In addition, the v
warning lamp in the instrument cluster
comes on.
The ABS may not be operational and the fol-
lowing systems are not available:
BAS and BAS Plus*
PRE-SAFE
® Brake*
Distronic Plus*
Cruise control
Hill start assist system
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.
