GTW_w191
Low Severity
Tesla GTW_w191 — Gateway Warning Park Assist
Gateway Controller (GTW) alert — plain English explanation and what to do next
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System
Gateway Controller (GTW)
Severity
Low Severity
Dealer visit
Not required
Affects models
Model S, Model X
What GTW_w191 means
GTW_w191 is a gateway controller warning related to park assist on older Model S and X. The gateway manages communication between vehicle systems. Often appears after ice storms or sensor blockage and usually clears on its own.
What to do
✓ Often clears after vehicle restart. Check and clean parking sensors first.
1
Restart vehicle — Soft reboot by holding both scroll wheels. Often clears GTW_w191 immediately.
2
Clean parking sensors — Check and clean all ultrasonic sensors in bumpers.
3
Try full power cycle — Controls > Safety > Power Off. Wait 2 minutes. Restart.
4
Monitor for recurrence — If keeps returning schedule service for gateway controller inspection.
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