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DTC 4-7 EMERGENCY, VOL+ or VOL- Button has Connection Error: Description

This DTC is output when one of the following occurs: 1) the mayday ECU is malfunctioning; 2) the mayday switch on the map light assembly is malfunctioning; or 3) the wire harness between the mayday ECU and the map light is open.

DIAGNOSTIC TROUBLE CODE

DTC Code DTC Detection Condition Trouble Area
4-7 Communication or communication line is abnormal between mayday ECU and map light (mayday switch)
  • Mayday ECU
  • Map light assembly (Mayday switch)
  • Wire harness
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