TESLA Alert
VCSEC-A189
VCSEC_a189_protoExpLengthTooLarge
Also written as VCSEC_A189 / VCSEC A189 / VCSEC_a189_protoExpLengthTooLarge / vcsec_a189_protoexplengthtoolarge
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-A189 mean?
Tesla alert code in the Vehicle Controller Security (VCSEC) module. The VCSEC has encountered an error receiving a protobuf
Original Description
The VCSEC has encountered an error receiving a protobuf
Affected Tesla Models
Model SModel XModel 3Model YCybertruck
What You May Notice
- Vehicle Controller Security alert: The VCSEC has encountered an error receiving a protobuf
- Possible issue with keyless entry or passive entry
- Alert in the Tesla app
How to Diagnose and Resolve
- 1 Reboot the vehicle
- 2 Re-pair your phone key or key card in Controls > Locks
- 3 Schedule service if Sentry Mode or key access remains unreliable
Severity Notes
VCSEC-A189 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 →