Toyota Corolla Cross: Cellular Communication

 ID-BOX Component Internal Failure (B278D96)

DESCRIPTION When the certification ECU (smart key ECU assembly) detects an input signal indicating that the vehicle is equipped with an ID code box even though the ID code box is not registered, the certification ECU (smart key ECU assembly) stores this DTC. DTC No. Detection Item DTC D

 A/C Switch Indicator does not Turn On

DESCRIPTION If none of the switch indicators on the air conditioning control assembly illuminate, the following factors may be the cause. Symptom Factor A/C switch indicator does not illuminate Air conditioning amplifier assembly malfunction Air conditioning control