FixVault

DTC B2780 Push Switch / Key Unlock Warning Switch Malfunction: Description

This DTC will be output if the transponder key ECU assembly does not detect that the unlock warning switch is ON even when the ignition switch is ON. Under normal conditions, the unlock warning switch assembly is ON when the ignition switch is ON.

DTC DETECTION CONDITION CHART

DTC No. DTC Detection Condition Trouble Area
B2780 Unlock warning switch ON is not detected when ignition switch is ON
  • Unlock warning switch assembly
  • Wire harness
  • Transponder key ECU assembly