LI00.20-P-070791

Implausible "service due" instrument cluster
message, head unit pop-up, or Mmc message
Topic number
LI00.20-P-070791
Version
7
Function group
00.20 Maintenance, service system (FSS, ASSYST)
Date
08-28-2020
Validity
Model series 118, 167, 177, and 247
Reason for change
Remedy updated
Reason for block
Complaint:
The following customer complaints may be noted:
- "Service A/B Due" message is displayed in the instrument cluster before the appropriate mileage or date is reached
- "Service A/B Due: Do you want to make an appointment?" pop-up message in the head unit display (see attachment) before the appropriate mileage or date is reached
- "Your Mercedes-Benz _ is due for service." Mmc service lead email or App message (see attachment) is sent to the
customer before the appropriate mileage or date is reached
Attachments
File
Description
MMC service lead email example.jpg
MMC service lead email
service lead popup example.jpg
Service Lead head unit popup message
Cause:
Improper mileage synchronization between the electronic ignition lock (N73), instrument cluster (N133/1), and the
central powertrain controller (N127)
Note: The vehicle's odometer as displayed in the instrument cluster is not affected and continues to operate as designed
Remedy:
At present time updated Central Powertrain Controller (N127) software is available for the following vehicles:
- Model series 118, 177 and 247 equipped with the M260 and M139 engine variants
- Model series 167 equipped with the M264, M176, and M177 engine variants
Software is still under development for other affected engine variants and models. This document will be updated
when the software is available.
Symptoms
Overall vehicle / Maintenance / Active Service System Plus ASSYST PLUS / Premature indication
Operation numbers/damage codes
08-28-2020 5:30 PM
© Copyright Mercedes-Benz AG
CTENORE
Page 1/3
Op. no.
Operation text
54-0991
PROGRAM AND CODE CONTROL
UNIT (AFTER QUICK TEST)
Time
Damage
code
Note
5440Z 90
Attachments
MMC service lead email
example.jpg:
08-28-2020 5:30 PM
© Copyright Mercedes-Benz AG
CTENORE
Page 2/3
service lead popup example.jpg:
08-28-2020 5:30 PM
© Copyright Mercedes-Benz AG
CTENORE
Page 3/3