TESLA Warning

GTW-W178

GTW_w178_driveRailMismatch

Also written as GTW_W178 / GTW W178 / GTW_w178_driveRailMismatch / gtw_w178_driverailmismatch

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-W178 mean?

Tesla warning code in the Gateway (GTW) module. The Gateway (GTW) is complaining about a state mismatch between the drive rail requested and the current one sensed. There are three scenarios that can cause this alert to appear: The Drive 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 Drive Rail was requested "On" when it is already in the "On" state. This is most likely a bad sense lead in the Gateway.The Drive 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 Gateway (GTW) is complaining about a state mismatch between the drive rail requested and the current one sensed. There are three scenarios that can cause this alert to appear: The Drive 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 Drive Rail was requested "On" when it is already in the "On" state. This is most likely a bad sense lead in the Gateway.The Drive 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 Gateway (GTW) is complaining about a state mismatch between the drive rail requested and the current one sensed. The
  • 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-W178 is a Warning in the Gateway system. Schedule service soon. Monitor your vehicle for additional warnings.

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