When the Telematics Communication Unit (TCU) has been replaced or reprogrammed and the software is updated...

Bulletin number

09-013-20-3663c

Component

Electrical system: body control module/bcm

Summary

When the Telematics Communication Unit (TCU) has been replaced or reprogrammed and the software is updated to ones shown below, DTC U2050:55-TCU (Activation of remote control not implemented) may be stored in memory with the message “In-Vehicle Network Malfunction” displayed in the multi-information display. This is caused by a communication error between the TCU, the Connectivity Master Unit (CMU), and the Body Control Module (BCM) when the control software in them are not of the version being ready for activation of connected service. To correct this concern, the control software of the TCU, CMU and BCM have been modified.

Owners of these vehicles have filed 11 complaints in the electrical category.