In the instrument cluster, the symbol for "12 V battery" and the message "Switch on vehicle" may...

Bulletin number

LI54.10-P-076820 (LI54.10-P-076820)

Component

Electrical system

Summary

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. The door control unit (N69/x) may sporadically keep the interior CAN bus awake. NOTE:· Exclusively door control units with the HW item numbers A2239019917, A2239010018, A2239010118 and A2239010218 can be affected. Remedy Update the software on all 4 door control units (N69/1, N69/2, N69/3 and N69/4). For this, a commissioning of the door control units must be carried out on all 4 doors (N69/1, N69/2, N69/3 and N69/4). (Path: XENTRY Scope; Control units view; DCU-XX (N69/x); Adaptations; Commissioning) The repair software is available with add-on 28462 for XD DVD 09/23, with add-on 28463 for XD DVD 12/23 and/or as of XD DVD 03/24. SW item numbers of the repair software: · A2069020310 for the door control units at the front doors (N69/1 and N69/2) · A2069020410 for the door control units at the rear doors (N69/3 and N69/4)

Owners of these vehicles have filed 52 complaints in the electrical category.