DTC 6-4: Backup Battery Connection Error: Description
WARNING: This page is about a different car, the 2008 Lexus LS 600hL. However, it is still accessible from the selected car via links, so may be relevant.
After the power switch is turned ON (IG) and 10 seconds or more have passed, if the mayday ECU does not recognize the mayday battery (backup battery), this DTC is output.
HINT:
This DTC is only a historic DTC
DTC DETECTION CONDITION CHART
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| 6-4 | Communication or communication line is abnormal between mayday ECU and mayday battery |
|