TESLA Alert

VCSEC-A304

VCSEC_a304_KeyfobUpdateComplete

Also written as VCSEC_A304 / VCSEC A304 / VCSEC_a304_KeyfobUpdateComplete / vcsec_a304_keyfobupdatecomplete

System
VCSEC
Vehicle Controller Security
Type
Alert
Category
Body
Severity
Alert

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 VCSEC-A304 mean?

Tesla alert code in the Vehicle Controller Security (VCSEC) module. Security controller has successfully updated a keyfob

Original Description

Security controller has successfully updated a keyfob

Affected Tesla Models

Model SModel XModel 3Model YCybertruck

What You May Notice

  • Vehicle Controller Security alert: Security controller has successfully updated a keyfob
  • Possible issue with keyless entry or passive entry
  • Alert in the Tesla app

How to Diagnose and Resolve

  1. 1 Reboot the vehicle
  2. 2 Re-pair your phone key or key card in Controls > Locks
  3. 3 Schedule service if Sentry Mode or key access remains unreliable

Severity Notes

VCSEC-A304 is an Alert in the Vehicle Controller Security system. Confirm the vehicle screen and Tesla app show no driving or charging restrictions, and schedule service if the alert returns.

Other VCSEC Codes

VCSEC_a001 VCSEC_a002 VCSEC_a003 VCSEC_a005 VCSEC_a006 VCSEC_a010 VCSEC_a012 VCSEC_a013
View all VCSEC codes →