The Trailer Sway Control warning on your 2023 Dodge Durango indicates a condition with the system that helps control trailer sway during towing. This feature is part of the electronic stability control system enhanced for towing applications.
Trailer Sway Control Function
Trailer Sway Control detects trailer oscillation through vehicle sensors (yaw rate, wheel speed, steering angle). When sway is detected, the system automatically applies individual brakes and reduces engine power to dampen the oscillation and help regain control.
Warning Types
The warning can indicate: the system is actively working (intervening during detected sway), the system has detected a fault and is disabled, or the system is unavailable due to related system faults. Context determines meaning.
Relationship to ESC
Trailer Sway Control is an extension of Electronic Stability Control (ESC). If ESC has faults—wheel speed sensor issues, steering angle sensor problems, or yaw sensor failures—Trailer Sway Control also becomes unavailable.
Active Intervention Indicators
If the warning light flashes during towing, the system is actively intervening to correct sway—this means it's working, not malfunctioning. Reduce speed and check trailer loading if frequent intervention occurs.
When Trailer Isn't Connected
If you see trailer sway warnings without a trailer connected, an underlying ESC system fault is likely causing the warning. The system doesn't know whether a trailer is present—it responds to detected conditions.
Proper Trailer Setup
Frequent sway control intervention may indicate trailer issues: improper loading (too much tongue weight or too little), incorrect hitch height, or trailer mechanical problems. Proper setup reduces the need for electronic intervention.