Service bulletin LI54.10-P-076820
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
| Type | Service bulletin |
|---|---|
| NHTSA id | 11003210 |
| Published by NHTSA | 2024-07-04 |
| Manufacturer's number | LI54.10-P-076820 |
| Manufacturer's date | 2024-06-11 |
| NHTSA component | ELECTRICAL SYSTEM |
NHTSA's summary
Complaint In the instrument cluster, the symbol for "12 V battery" and the message "Switch on vehicle" may sporadically be displayed. As a consequence of this, the fault codes B1FCB97 (=> N73/3) and U116000 (=> N73/3*1) are stored in the fault memory. In the subsequent analysis of the 12 V on-board electrical system data, the following parameters are noteworthy (see picture 1 in the attachment): • Charge balance negative when stationary. • Interior CAN bus is awake for an unusually long time while the vehicle was locked. • 12 V battery SOC (state of charge) during subsequent engine start is 45% or less. NOTE: This LI does not apply if the CEL was reported as being on without a 12V message. Once the 12 V battery SOC has exceeded 50% for the first time, the symbol and the message in the instrument cluster disappear again. Cause The door control unit (N69/x) may sporadically keep the interior CAN bus awake. Remedy Update the software and coding on all 4 door control units (N69/1, N69/2, N69/3 and N69/4): • To do so, a commissioning process must be started in the door control unit, left-hand front door (N69/1). The remaining door control units (N69/2, N69/3 and N69/4) are commissioned at the same time, in an automated process.( Path: Xentry Scope; Control Units View; TSG-XX (N69/1); Adaptations; Commissioning) • The repair software has been available since 02.02.2024 and the new SCN coding since 04.06.2024. • The measures are only 100% effective if the combination of "Repair software + new SCN coding" is used. SW item numbers of the repair software: • A2069020310 for the door control units on the front doors (N69/1 and N69/2) • A2069020410 for the door control units on the rear doors (N69/3 and N69/4)
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
Components
Electrical system
Trouble codes named
B1FCB, U1160
| MERCEDES-BENZ AMG C43 | 2022 to 2023 |
|---|---|
| MERCEDES-BENZ C 300 | 2022 to 2023 |
| MERCEDES-BENZ GLC 300 | 2023 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.