UMC-W025
UMC_w025_cntrOpenExpectedClose
Also written as UMC_W025 / UMC W025 / UMC_w025_cntrOpenExpectedClose / umc_w025_cntropenexpectedclose
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 UMC-W025 mean?
Tesla warning code in the Universal Mobile Connector (UMC) module. There is a measurement in the Gen 2 Universal Mobile Connector (UMC) that indicates the relays are open when they are expected to be closed. This alert can also be triggered in IT grids with an unusually high ground impedance.
Original Description
There is a measurement in the Gen 2 Universal Mobile Connector (UMC) that indicates the relays are open when they are expected to be closed. This alert can also be triggered in IT grids with an unusually high ground impedance.
Affected Tesla Models
What You May Notice
- Universal Mobile Connector alert: There is a measurement in the Gen 2 Universal Mobile Connector (UMC) that indicates the relays are open when they are ex
- Related vehicle feature may be reduced or unavailable
- Alert visible in the Tesla app: There is a measurement in the Gen 2 Universal Mobile Connector (UMC) that indica
How to Diagnose and Resolve
- 1 Reboot the vehicle by holding both scroll wheels for 10 seconds
- 2 Check for pending OTA software updates in Controls > Software
- 3 If the alert persists, schedule a Tesla Service appointment
- 4 Describe the alert code and any symptoms when booking service
Severity Notes
UMC-W025 is a Warning in the Universal Mobile Connector system. Schedule service soon. Monitor your vehicle for additional warnings.