DTC U3000-53; Maintenance Mode Switching: Notes

WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

DETECTION CONDITION & POSSIBLE CAUSE

Description	Maintenance mode switching
Detection condition	Electric parking brake system switches to maintenance mode.
Fail-safe	Not applicable
Possible cause	NOTE: If the electric parking brake system switches to the maintenance mode, a DTC is output. After the maintenance mode is finished, the DTC is automatically cleared by switching the ignition ON from OFF (LOCK). Electric parking brake control module malfunction
System wiring diagram	Not applicable