TESLA Unknown
MCU-U003
MCU_u003_HeadlightsOnDoorOpen
Also written as MCU_U003 / MCU U003 / MCU_u003_HeadlightsOnDoorOpen / mcu_u003_headlightsondooropen
Why does the exact Tesla alert ID matter?
Record the exact alert ID, including underscores, suffixes, and companion alerts. Tesla alerts that look similar can point to different modules, timestamps, and service procedures.
What does MCU-U003 mean?
Tesla unknown code in the Media Control Unit (MCU) module. The headlights are on and a vehicle door is open.
Original Description
The headlights are on and a vehicle door is open.
Affected Tesla Models
Model SModel XModel 3Model Y
What You May Notice
- Media Control Unit alert: The headlights are on and a vehicle door is open.
- Touchscreen may show an error for one or more apps or settings
- Feature may restore itself after a reboot
How to Diagnose and Resolve
- 1 Perform a soft reboot (hold both scroll wheels for ~10 seconds)
- 2 Check for pending OTA software updates
- 3 If the issue persists, schedule a service appointment
Severity Notes
MCU-U003 is a diagnostic or informational code in the Media Control Unit system. Typically no immediate action is required.
Other MCU Codes
MCU_u001 Tesla unknown code in the Media Control Unit (MCU) module. T... MCU_u002 Tesla unknown code in the Media Control Unit (MCU) module. T... MCU_u004 MCU_u005 Tesla unknown code in the Media Control Unit (MCU) module. T... MCU_u006 Tesla unknown code in the Media Control Unit (MCU) module. T... MCU_u007 Tesla unknown code in the Media Control Unit (MCU) module. T... MCU_u008 Tesla unknown code in the Media Control Unit (MCU) module. T... MCU_u014
View all MCU codes →