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Display messages
Possible causes/consequences and
M
M
Solutions
Active Distance Assist
- - - mph
* An activation condition for Active Distance Assist DISTRONIC has
not been fulfilled.
#
Comply with the activation conditions for Active Distance Assist
DISTRONIC (
/
page 116).
Active Distance Assist
Off
* Active Distance Assist DISTRONIC has been deactivated
(
/
page 116).
In the event of a deactivation not initiated by the driver, a warning
tone sounds as well.
Active Distance Assist
Inoperative
* A warning tone also sounds. Active Distance Assist DISTRONIC is
malfunctioning. In addition, BAS may have failed.
#
Consult a qualified specialist workshop.
Active Distance Assist
and Limiter Inoperative
* A warning tone also sounds. Active Distance Assist DISTRONIC and
the limiter are malfunctioning.
#
Consult a qualified specialist workshop.
Act. Distance Assist Sus-
pended
* You are accelerating. Active Distance Assist DISTRONIC does not
intervene for the duration of the acceleration process.
#
Remove your foot from the accelerator pedal.
Active Distance Assist DISTRONIC will be activated again.
Active Distance Assist
Curr. Unavailable See
Oper. Manual
* A warning tone also sounds.
Active Distance Assist DISTRONIC has been switched off and is
temporarily non-operational.
The following causes are possible:
R
The function is impaired due to heavy rain or snow.
R
The radar sensor system is temporarily non-operational, e.g. due
to electromagnetic radiation close to TV or radio transmitting
stations or other sources of radiation.
R
The system is outside the operating temperature range.
R
The on-board electrical system voltage is too low.
If the causes mentioned above no longer apply, the display message
will disappear and Active Distance Assist DISTRONIC will be opera‐
tional again.
If the display message does not disappear:
#
Stop in accordance with the traffic conditions.
#
Secure the vehicle against rolling away.
Active Brake Assist Sys-
tem Inoperative
* Active Brake Assist is unavailable due to a malfunction.
#
Consult a qualified specialist workshop.
Active Brake Assist Cur-
rently Unavail.
* Active Brake Assist is temporarily non-operational.
The following causes are possible:
R
The sensors in the front bumper are dirty.
R
The function is impaired due to heavy rain or snow.
R
The radar sensor system is temporarily non-operational, e.g. due
to electromagnetic radiation close to TV or radio transmitting
stations or other sources of radiation.
Display messages and warning and indicator lamps 249