LI82.85-P-069381

MBUX multimedia system: The central display
turns dark, interference noise from speakers
Topic number
LI82.85-P-069381
Version
6
Function group
82.85 Navigation and Communication systems
Date
01-21-2020
Validity
BR177 with code 548/549 and 808/809
BR167 with code 547/548/549
BR118 with code 548/549
Reason for change
Updated remedy
Reason for block
Complaint:
The central display (A40/16) may turn dark with Mercedes-Benz welcome animation appearing. In some instances,
interference noise such as humming or chattering can be heard from the speakers. After a brief period of time, the
MBUX multimedia system (A26/17) will be fully operational.
Attachments
File
Description
Chattering_noise.mp4
Chattering noise from speakers
Humming_Noise.mp4
Humming noise from speakers
Cause:
Previous MBUX multimedia system (A26/17) software release
Remedy:
Update MBUX multimedia system (A26/17) software to E419.5 (available from XENTRY diagnosis release 05/19) or
greater.
Symptoms
Communication/information / Entertainment / Screen/display / Display dark -System running
Communication/information / Information display / Displays / Multifunction display / Function / Malfunction
Communication/information / Entertainment / Screen/display / Frozen screen -system runs
Control unit/fault code
Control unit
Fault code
A26/17 - MBUX multimedia sy- stem (Head unit) (HU6)
01-21-2020 5:24 PM
© Copyright Mercedes-Benz AG
Fault text
-
CTENORE
Page 1/2
Operation numbers/damage codes
Op. no.
Operation text
01-21-2020 5:24 PM
© Copyright Mercedes-Benz AG
Time
CTENORE
Damage
code
Note
87100 DH
Head unit restarts automatically
Page 2/2