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I hooked up my trailer to the back of my 3S and while I was going down the road at night, the gauge lights went to "day mode" and the radio and climate lights went out. I also found out all my tail and front parking lights are also out. Both taillight fuses are OK. Map and trunk lights still work. It's like the car cannot sense that the headlights are on. Is there a relay or fuse that controls this?

please help!
 

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You might wanna check out your flasher relay when you hook in trailer lights it trys to draw to much and needs a bigger relay the same thing happened when we hooked up a trailer to his jimmy and he had to replace it with a heavy duty relay
:lol:
 

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I am not sure if I answered to this question,,I kinda remember I answered to similer case somewhere...

well,,

First doubt will be TNS relay. Have your vehichle checked at your dealer to see what error code can be found.
 
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