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Hello. My name is Mike. I have a 2021 Toyota Tundra platinum crewmax . I have installed some aftermarket led headlights. And now showing a headlight malfunction go see the dealer. Do you have a capacitor that will solve this problem? thanks, Mike F.
The 2021 Toyota Tundra uses H4 (9003) halogen for high and low beams. The error message can be eliminated by using CANbus or a decoder, but the function is not always guaranteed. (Different manufacturers/vehicles have different computer/wiring systems) Assuming that you installed H4 (9003) LED bulbs, below is our LED decoder for the size H4.
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Dama 9003 H4 HB2 LED Decoder CANbus Wire Harness | Pack of 2