Page 673 of 769
672 Practical hintsWhat to do if …?Display
Possible cause/consequence
Possible solution
Engine Oil Level
Cannot Be
Measured
CL 600 and CL 65 AMG only:
The measuring system is malfunctioning.
Have the measuring system checked by an
authorized Mercedes-Benz Center.
Engine Oil
Level Too High
CL 600 and CL 65 AMG only:
You have added too much engine oil.
There is a risk of damaging:
the engine
the catalytic converter
Have excess oil siphoned or drained off.
Contact an authorized Mercedes-Benz
Center.
Page 674 of 769

673 Practical hints
What to do if …?
Display
Possible cause/consequence
Possible solution
SRS Malfunction
Service Required
There is a malfunction in the supplemental
restraint systems. The air bags or emergen-
cy tensioning devices (ETDs) could deploy
unexpectedly or fail to activate in an
accident.
Drive with added caution to the nearest
authorized Mercedes-Benz Center.
Front Left SRS
Malfunction
Service Required
Components of the driver’s supplemental
restraint system may not work properly.
Drive with added caution to the nearest
authorized Mercedes-Benz Center.
Front Right SRS
Malfunction
Service Required
Components of the front passenger’s sup-
plemental restraint system may not work
properly.
Drive with added caution to the nearest
authorized Mercedes-Benz Center.
Rear Left SRS
Malfunction
Service Required
Components of the left rear passenger’s
supplemental restraint system may not
work properly.
Drive with added caution to the nearest
authorized Mercedes-Benz Center.
Warning!
G
In the event that a malfunction of the SRS is
indicated as outlined above, the SRS may
not be operational. For your safety, we
strongly recommend that you contact an au-
thorized Mercedes-Benz Center immediate-
ly to have the system checked; otherwise
the SRS may not be deployed when needed
in an
accident, which could result in serious or fa-
tal injury, or it might deploy unexpectedly
and unnecessarily which could result in an
accident and/or injury to you or to others.
Page 675 of 769

674 Practical hintsWhat to do if …?Display
Possible cause/consequence
Possible solution
Rear Center SRS
Malfunction
Service Required
Components of the center rear passenger’s
supplemental restraint system may not
work properly.
Drive with added caution to the nearest au-
thorized Mercedes-Benz Center.
Rear Right SRS
Malfunction
Service Required
Components of the right rear passenger’s
supplemental restraint system may not
work properly.
Drive with added caution to the nearest au-
thorized Mercedes-Benz Center.
Left Side Curtain
Airbag Malfunction
Service Required
The left side window curtain air bag may not
work properly.
Drive with added caution to the nearest au-
thorized Mercedes-Benz Center.
Right Side Curtain
Airbag Malfunction
Service Required
The right side window curtain air bag may
not work properly.
Drive with added caution to the nearest au-
thorized Mercedes-Benz Center.
Warning!
G
In the event a malfunction of the SRS is indi-
cated as outlined above, the SRS may not be
operational. For your safety, we strongly
recommend that you contact an authorized
Mercedes-Benz Center immediately to have
the system checked; otherwise the SRS may
not be deployed when needed in an
accident, which could result in serious or fa-
tal injury, or it might deploy unexpectedly
and unnecessarily which could result in an
accident and/or injury to you or to others.
Page 676 of 769
675 Practical hints
What to do if …?
Display
Possible cause/consequence
Possible solution
Tele Aid
Inoperative
One or more main functions of the Tele Aid
system are malfunctioning.
Have the Tele Aid system checked by an
authorized Mercedes-Benz Center.
Tire Press. Warning
Caution
Tire Malfunction
Advanced TPMS:
One or more tires are deflating.
Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
Engage the electronic parking brake
(page 412).
If necessary, change the wheel (
page 696).
Page 677 of 769

676 Practical hintsWhat to do if …?Display
Possible cause/consequence
Possible solution
Caution
Tire Defect
Advanced TPMS:
One or more tires are deflating. The respec-
tive tire is shown in the multifunction
display.
Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
Engage the electronic parking brake
(page 412).
If necessary, change the wheel (
page 696).
Warning!
G
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle. You
may lose control of the vehicle. Continued
driving with a flat tire will cause excessive
heat build-up and possibly a fire.
Follow recommended tire inflation pres-
sures.
Do not underinflate tires. Underinflated tires
wear excessively and/or unevenly, adverse-
ly affect handling and fuel economy, and are
more likely to fail from being overheated. Do
not overinflate tires. Overinflated tires can
adversely affect handling and ride comfort,
wear unevenly, increase stopping distance,
and result in sudden deflation (blowout) be-
cause they are more likely to become punc-
tured or damaged by road debris, potholes
etc.
Page 678 of 769
677 Practical hints
What to do if …?
Display
Possible cause/consequence
Possible solution
Check
Tire Pressure
Advanced TPMS:
The pressure is too low in one or more tires.
Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
Engage the electronic parking brake
(page 412).
Check and adjust tire inflation pressure as
required (
page 575).
If necessary, change the wheel (
page 575).
Page 679 of 769

678 Practical hintsWhat to do if …?Display
Possible cause/consequence
Possible solution
Check Tires
Advanced TPMS:
The pressure is too low in one or more tires.
The respective tire is shown in the multi-
function display.
Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
Engage the electronic parking brake
(page 412).
Check and adjust tire inflation pressure as
required (
page 575).
If necessary, change the wheel (
page 575).
Warning!
G
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle. You
may lose control of the vehicle. Continued
driving with a flat tire will cause excessive
heat build-up and possibly a fire.
Follow recommended tire inflation pres-
sures.
Do not underinflate tires. Underinflated tires
wear excessively and/or unevenly, adverse-
ly affect handling and fuel economy, and are
more likely to fail from being overheated. Do
not overinflate tires. Overinflated tires can
adversely affect handling and ride comfort,
wear unevenly, increase stopping distance,
and result in sudden deflation (blowout) be-
cause they are more likely to become punc-
tured or damaged by road debris, potholes
etc.
Page 680 of 769
679 Practical hints
What to do if …?
Display
Possible cause/consequence
Possible solution
Wheel Sensor(s)
Missing
One or more sensors malfunction (e.g. bat-
tery in one or more wheel sensor is empty).
One or more wheels without wheel sensors
mounted (e.g. spare tire).
No pressure value is shown on the multi-
function display for the tire in question.
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 after a few
minutes driving.
Tire Pressure
Please Rectify
Advanced TPMS:
The pressure is too low in one or more tires.
Or the tire pressures of the individual
wheels differ too radically from one
another.
Check and adjust tire inflation pressure as
required (
page 575).