GTW_w177
GTW_w177_dead12VBattery
What does GTW_w177 mean?
Tesla warning code in the Gateway (GTW) module. The 12V battery voltage has dropped below 10.5V for at least 5 seconds. If this alert is present, the 12V battery has likely become damaged through excessive discharge and should be replaced. The root cause of this damage should also be diagnosed and repaired to prevent future occurrences in the new battery. The flooded batteries used on Model X vehicles are especially sensitive to deep discharge, which can result in failures developing weeks or months later even if the battery looks fine initially.
Original Description
The 12V battery voltage has dropped below 10.5V for at least 5 seconds. If this alert is present, the 12V battery has likely become damaged through excessive discharge and should be replaced. The root cause of this damage should also be diagnosed and repaired to prevent future occurrences in the new battery. The flooded batteries used on Model X vehicles are especially sensitive to deep discharge, which can result in failures developing weeks or months later even if the battery looks fine initially.
Severity Notes
GTW_w177 is a Warning in the Gateway system. Schedule service soon. Monitor your vehicle for additional warnings.
Other GTW Codes
Tesla alert codes sourced from the community-maintained Tesla Alerts Dictionary. This information is for educational purposes only. Always consult Tesla Service for official diagnosis and repairs.