Safety systems
Display messages Possible causes/consequences and
0050
0050Solutions 002500E5
Currently Currently
Unavailable See Unavailable See
Operator's Manual Operator's Manual ABS (Anti-lock Braking System), ESP
®
(Electronic Stability
Program), BAS (Brake Assist), the HOLD function, hill start assist
and ESP ®
trailer stabilization are temporarily unavailable.
BAS and the adaptive brake lights may also have failed.
In addition, the 00E5,00BBand0025 warning lamps light up in
the instrument cluster.
Possible causes are:
R Self-diagnosis is not yet complete.
R The on-board voltage may be insufficient.
G WARNING
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
The steerability and braking characteristics may be severely
affected. The braking distance in an emergency braking situation
can increase.
If ESP ®
is not operational, ESP ®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Carefully drive a suitable distance making slight steering
movements at a speed above 12 mph (20 km/h).
If the display message disappears, the functions mentioned
above are available again.
If the display message continues to be displayed:
X Drive on carefully.
X Visit a qualified specialist workshop. 002500E5
Inoperative See Inoperative See
Operator's Manual Operator's Manual ABS, ESP
®
, BAS, the HOLD function, hill start assist and
ESP ®
trailer stabilization are unavailable due to a malfunction.
BAS and the adaptive brake lights may also have failed.
The 0027 (USA only)/004D (Canada only),00E5,00BBand0025
warning lamps in the instrument cluster also light up.
G WARNING
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
The steerability and braking characteristics may be severely
affected. The braking distance in an emergency braking situation
can increase. Display messages
221On-board computer and displays Z
Display messages Possible causes/consequences and
0050
0050Solutions If ESP
®
is not operational, ESP ®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Drive on carefully.
X Visit a qualified specialist workshop immediately. 00E5
Currently Currently
Unavailable See Unavailable See
Operator's Manual Operator's Manual ESP
®
, BAS, the HOLD function, hill start assist and ESP ®
trailer
stabilization are unavailable due to a malfunction.
BAS and the adaptive brake lights may also have failed.
In addition, the 00E5and00BB warning lamps light up in the
instrument cluster.
The self-diagnosis function might not be complete, for example.
G WARNING
The brake system continues to function normally, but without the
functions listed above.
The braking distance in an emergency braking situation can thus
increase.
If ESP ®
is not operational, ESP ®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Carefully drive a suitable distance making slight steering
movements at a speed above 12 mph (20 km/h).
If the display message disappears, the functions mentioned
above are available again.
If the display message continues to be displayed:
X Drive on carefully.
X Visit a qualified specialist workshop. 222
Display
messagesOn-board computer and displays
Display messages Possible causes/consequences and
0050
0050Solutions 00E5
Inoperative See Inoperative See
Operator's Manual Operator's Manual ESP
®
, BAS, the HOLD function, hill start assist and ESP ®
trailer
stabilization are unavailable due to a malfunction.
BAS and the adaptive brake lights may also have failed.
In addition, the 00E5and00BB warning lamps light up in the
instrument cluster.
G WARNING
The brake system continues to function normally, but without the
functions listed above.
The braking distance in an emergency braking situation can thus
increase.
If ESP ®
is not operational, ESP ®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Drive on carefully.
X Visit a qualified specialist workshop. 007A0025
00E5
Inoperative See Inoperative See
Operator's Manual Operator's Manual EBD (electronic brake force distribution), ABS, ESP
®
, BAS, the
HOLD function, hill start assist and ESP ®
trailer stabilization are
unavailable due to a malfunction.
BAS and the adaptive brake lights may also have failed.
In addition, the 00E5,00BBand0025 warning lamps light up in
the instrument cluster and a warning tone sounds.
G WARNING
The brake system continues to function normally, but without the
functions listed above. The front and rear wheels could therefore
lock if you brake hard, for example.
The steerability and braking characteristics may be severely
affected. The braking distance in an emergency braking situation
can increase.
If ESP ®
is not operational, ESP ®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Drive on carefully.
X Visit a qualified specialist workshop immediately. 0049(USA
only)
0024(Canada
only)
Release Release Park.
Park.Brake
Brake You are driving with the parking brake applied. A warning tone also
sounds.
X
Release the parking brake. Display
messages
223On-board computer and displays Z
Display messages Possible causes/consequences and
0050
0050Solutions 0027(USA
only)
004D(Canada
only)
Check Brake Fluid Check Brake Fluid
Level Level There is not enough brake fluid in the brake fluid reservoir. In
addition, the
0027(USA only)/ 004D(Canada only) warning lamp
lights up in the instrument cluster and a warning tone sounds.
G WARNING
The braking effect may be impaired.
There is a risk of an accident.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
X Secure the vehicle against rolling away ( Ypage 156).
X Consult a qualified specialist workshop.
X Do not add brake fluid. This does not correct the malfunction. 0026
Check Brake Pad Check Brake Pad
Wear Wear The brake pads/linings have reached their wear limit.
X
Visit a qualified specialist workshop. 0053
mbrace Inoperative mbrace Inoperative USA only:
one or more main functions of the mbrace system are
malfunctioning.
Canada only: one or more main functions of the TELE AID system
are malfunctioning.
X USA only: have the mbrace system checked at a qualified
specialist workshop.
X Canada only: have the Tele AID system checked at a qualified
specialist workshop. 0075
SRS Malfunction SRS Malfunction
Service Required Service Required There is a malfunction in the SRS (Supplemental Restraint
System). The
0075warning lamp also lights up in the instrument
cluster.
G WARNING
The air bags or Emergency Tensioning Devices may either be
triggered unintentionally or, in the event of an accident, may not
be triggered.
There is an increased risk of injury.
X Visit a qualified specialist workshop.
For further information about SRS, see (Y page 39).224
Display
messagesOn-board computer and displays
Display messages Possible causes/consequences and
0050
0050Solutions Differential
Differential
Locks
Locks
Available Only in
Available Only in
LOW RANGE LOW RANGE The LOW RANGE button has been pressed. The transfer case is in
the
LOW RANGE off-road driving position and a differential lock
is engaged.
X Disengage the differential locks (Y page 195).
X Repeat the gearshift process. TC-NEUTRAL TC-NEUTRAL
On On The transfer case is in the
Neutralneutral position.
A warning tone will also sound when the driver's door is opened
and the brake pedal is not depressed.
X Close the driver's door.
X Secure the vehicle against rolling away ( Ypage 156).
X Shift the transfer case according to driving conditions
(Y page 193). Differential Lock Differential Lock
Preselected Preselected
ESP Not Available ESP Not Available A differential lock has been engaged. The differential gear has not
yet locked the respective differential. The activation indicator
lamp (yellow) (
Ypage 195) of the switch lights up.
ESP is unavailable.
ABS is still available. Differential Differential
Locks
Locks
Active
Active
ABS and ESP Not ABS and ESP Not
Available Available A differential lock was engaged and the differential gear has
locked the respective differential. The activation indicator lamp
(yellow) and function indicator lamp (red) (
Ypage 195) on the
switch light up.
ABS and ESP are unavailable. 234
Display
messagesOn-board computer and displays
Display messages Possible causes/consequences and
0050
0050Solutions Blind Spot Assist
Blind Spot Assist
Currently Currently
Unavailable See Unavailable See
Operator's Manual Operator's Manual
or
Active Blind Spot
Active Blind Spot
Assist Currently Assist Currently
Unavailable See Unavailable See
Operator's Manual Operator's Manual Blind Spot Assist or Active Blind Spot Assist is temporarily
inoperative. Possible causes are:
R
you have established the electrical connection between the
trailer and your vehicle.
R the sensors are dirty.
R function is impaired due to heavy rain or snow.
R the radar sensor system is outside the operating temperature
range.
R the radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio
stations or other sources of electromagnetic radiation.
The yellow 0063indicator lamps also light up in the exterior
mirrors.
X When towing a trailer, confirm the display message with 0076.
If you are driving without a trailer and the display message does
not disappear:
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Apply the parking brake.
X Clean the sensors (Y page 291).
X Restart the engine.
If the system detects that the sensors are fully operational, the
display message disappears.
Blind Spot Assist or Active Blind Spot Assist is operational again. Blind Spot Assist Blind Spot Assist
Inoperative Inoperativeor
Active Blind Spot Active Blind Spot
Assist Inoperative Assist Inoperative Blind Spot Assist or Active Blind Spot Assist is defective.
The yellow
0063indicator lamps also light up in the exterior
mirrors.
X Visit a qualified specialist workshop. DISTRONIC PLUS DISTRONIC PLUS
Off Off DISTRONIC PLUS has been deactivated (Y
page 176).
If it was deactivated automatically, a warning tone also sounds. DISTRONIC PLUS
DISTRONIC PLUS
Now Available Now Available DISTRONIC PLUS is operational again after having been
temporarily unavailable. You can now reactivate DISTRONIC PLUS
(Y
page 176). Display
messages
235On-board computer and displays Z
Problem Possible causes/consequences and
0050
0050Solutions 0025
The yellow ABS warning
lamp is lit while the
engine is running.
ABS (Anti-lock Braking System) is deactivated due to a
malfunction. BAS (Brake Assist), ESP
®
(Electronic Stability
Program), the HOLD function, hill start assist, the adaptive brake
lights and ESP ®
trailer stabilization, for example, are therefore also
deactivated.
G WARNING
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
The steerability and braking characteristics may be severely
affected. The braking distance in an emergency braking situation
can increase.
If ESP ®
is not operational, ESP ®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Observe the additional display messages in the multifunction
display.
X Drive on carefully.
X Visit a qualified specialist workshop.
If the ABS control unit is faulty, there is also a possibility that other
systems, such as the navigation system or the automatic
transmission, will not be available. Warning and indicator lamps in the instrument cluster
245On-board computer and displays Z
Problem Possible causes/consequences and
0050
0050Solutions 0025
The yellow ABS warning
lamp is lit while the
engine is running.
ABS is temporarily unavailable. BAS, ESP
®
, EBD (electronic brake
force distribution), the HOLD function, hill start assist, ESP ®
trailer
stabilization and the adaptive brake lights, for example, are
therefore also deactivated.
Possible causes are:
R self-diagnosis is not yet complete.
R the on-board voltage may be insufficient.
G WARNING
The brake system continues to function normally, but without the
functions listed above. The front and rear wheels could therefore
lock if you brake hard, for example.
The steerability and braking characteristics may be severely
affected. The braking distance in an emergency braking situation
can increase.
If ESP ®
is not operational, ESP ®
is unable to stabilize the vehicle.
There is a risk of an accident.
X Carefully drive a suitable distance, making slight steering
movements at a speed above 12 mph (20 km/h).
The functions mentioned above are available again when the
warning lamp goes out.
If the warning lamp is still on:
X Observe the additional display messages in the multifunction
display.
X Drive on carefully.
X Visit a qualified specialist workshop. 246
Warning and indicator lamps in the instrument clusterOn-board computer and displays