Thank you for this thread. Apparently I am experiencing the same issue after inappropriate led bulb installation....
Is there an option to replace the faulty module myself ? Did anyone try it ?
Where is it located ?
I believe it is in the left tail-light area...
From FSM:
"REAR BODY CONTROL MODULE (RBCM) REMOVAL/INSTALLATION
CAUTION:
NOTE:
1. When replacing the rear body control module (RBCM), perform the configuration. (See REAR BODY CONTROL MODULE (RBCM) CONFIGURATION (USING READ/WRITE FUNCTION).)
2. Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5].)
3. Remove the following parts:
Trunk board (See TRUNK BOARD REMOVAL/INSTALLATION.)
Trunk end trim (See TRUNK END TRIM REMOVAL/INSTALLATION.)
Rear scuff plate (LH) (See REAR SCUFF PLATE REMOVAL/INSTALLATION.) Trunk side trim (LH) (See TRUNK SIDE TRIM REMOVAL/INSTALLATION.)
4. Disconnect the connectors shown in the figure.
If configuration is not performed when the rear body control module (RBCM) is replaced with a new one, the vehicle specification information is not stored in the rear body control module (RBCM) and the system will not operate normally.
When performing configuration, it is necessary to read the vehicle specification information from the rear body control module (RBCM) before replacing it. Connect the M-MDS to the vehicle and perform vehicle identification before removing the rear body control module (RBCM). The vehicle specification information is temporarily stored in the M-MDS.
The rear body control module (RBCM) prior to replacement stores the vehicle specification information.
A new rear body control module (RBCM) does not store any vehicle specification information.
If the vehicle specification information from the rear body control module (RBCM) prior to replacement cannot be read, perform the configuration using As-Built data."