This bulletin applies to 2020-2023 Infiniti Q50 vehicles equipped with a factory installed SOS switch, located near the overhead map lamp. This is also equipped with a wireless communication device called a Telematics Communication Unit (TCU). With an active NissanConnect Services subscription, the TCU communicates with the Nissan Data Center to provide various security and convenience services.

When diagnosing DTC B2E1B-06 (automatic ECALL), if this DTC is not “CRNT” in the IVC, do not replace the TCU. Simply erase the DTC. If the DTC is CRNT in the IVC, replace the TCU.