LI82.60-P-072403

Model series 118, 177, and 247 with M139 engine and without code 810 - sound system volume and bass level too low
Topic number
LI82.60-P-072403
Version
3
Function group
82.60 - Radio, audio, video systems
Date
4/14/22
Validity
Model series 118, 17, and 247 with M139 and without
code 810
Reason for change
System functionality update
Complaint
Volume and bass level too low
Cause
Current sound amp (N40/3) software release.
Important:
•
•
On vehicles with standard sound, the rear subwoofer (H21/35) emits the engine sound only (if equipped with
M139 engine)
On vehicles with code 853 (Advanced Sound) or 810 (Premium Sound), the rear subwoofer (H21/35) emits not
only the engine sound, but also entertainment sound
Remedy
Perform a software update of the sound amp (N40/3) to the latest available version.
Note: Do not replace any parts as this will not remedy the complaint.
Symptoms
Communication/information > Entertainment > Audio/Sound > Tone setting malfunction
Communication/information > Entertainment > Audio/Sound > Volume adjustment function error
Communication/information > Entertainment > Audio/Sound > Poor audio quality
Operation numbers/damage codes
Op. no.
Operation text
14.04.2022 15:06:39
© Copyright Mercedes-Benz AG
Time
CTENORE
Damage
code
Note
8276353
Please refer to the LI in the dealer
text of the warranty claim
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© Copyright Mercedes-Benz AG
CTENORE
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