TESLA Warning

GTW-W179

GTW_w179_accRailMismatch

Also written as GTW_W179 / GTW W179 / GTW_w179_accRailMismatch / gtw_w179_accrailmismatch

System
GTW
Gateway
Type
Warning
Category
Network
Severity
Warning

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 GTW-W179 mean?

Tesla warning code in the Gateway (GTW) module. The Adaptive Cruise Control (ACC) rail voltage does not match what the vehicle is expecting. There are three scenarios that can cause this alert to appear: The ACC rail was requested "On" by the Gateway, but it is stuck in the "Off" state. This is possibly due to a relay that will not unlatch.The ACC rail was requested "On" when it is already in the "On" state. This is most likely a bad sense lead in the Gateway.The ACC rail was requested "Off" and it is stuck in the "On" state. This is possibly due to a relay that will not unlatch?.

Original Description

The Adaptive Cruise Control (ACC) rail voltage does not match what the vehicle is expecting. There are three scenarios that can cause this alert to appear: The ACC rail was requested "On" by the Gateway, but it is stuck in the "Off" state. This is possibly due to a relay that will not unlatch.The ACC rail was requested "On" when it is already in the "On" state. This is most likely a bad sense lead in the Gateway.The ACC rail was requested "Off" and it is stuck in the "On" state. This is possibly due to a relay that will not unlatch?.

Affected Tesla Models

Model SModel XModel 3Model YCybertruck

What You May Notice

  • Gateway alert: The Adaptive Cruise Control (ACC) rail voltage does not match what the vehicle is expecting. There are three scenarios t
  • One or more features may temporarily be unavailable
  • Usually resolves after a reboot

How to Diagnose and Resolve

  1. 1 Perform a soft reboot (hold both scroll wheels)
  2. 2 Check for pending OTA software updates
  3. 3 Schedule service if the alert recurs frequently

Severity Notes

GTW-W179 is a Warning in the Gateway system. Schedule service soon. Monitor your vehicle for additional warnings.

Other GTW Codes

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