Brake Light Problems of Kia Motor Telluride

Concern regarding the factory installed trailer tow package, specifically the lights controlled by the 4-pin factory supplied connection. The trailer lights do not always work in conjunction with the main brake lights on the Telluride - specifically when using 'auto hold'. The discussion is not if 'auto hold' should not be used with a trailer. It's possible to use 'auto hold' when towing, so it will be. The concern is if the trailer, or load, blocks the view of the main brake lights of the vehicle - the trailer will display no brake lights if the driver removes their foot from the brake pedal while stopped and held with 'auto hold'. This creates a potentially, seriously unsafe condition. While in 'auto hold', the main brake lights on the vehicle display the same whether or not the driver's foot is on the brake pedal; however, any lights connected to the 4-pin factory connector for trailer lights only function when the driver has their foot on the brake pedal. Any lights connected to the 4-pin factory connector should always function the same as the main brakes lights on the vehicle. First noticed when an auxiliary hitch light was connected to the 4-pin factory connection, and verified later during the first tow with a trailer connected to the 4-pin connector. Consumer stated ah, scc, hda, and fca all systems included in apply the brakes under certain circumstances.

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