ALT Posted April 20, 2022 Share Posted April 20, 2022 2005 SC430 bulb replacement warning light on after installing LED break light bulbs. Anyone know how to fix this problem? Thanks. Quote Link to comment Share on other sites More sharing options...
RX400h Posted April 20, 2022 Share Posted April 20, 2022 Sometimes replacement of some light within a circuit with LEDs can cause this. Try swapping in the OEM style incandescent bulbs to see if it fixes the problem. Quote Link to comment Share on other sites More sharing options...
ALT Posted April 20, 2022 Author Share Posted April 20, 2022 Thanks. Yes, the OEM incandescent bulbs worked fine. I just wanted to upgrade the bulbs to LED because they are brighter and lite up faster. I found the solution to this which is to add a load resistor for each bulb or buy the LED bulb with the build-in resistor. BTW, the brake light bulb type for 05 SC430 is 7443. 1 Quote Link to comment Share on other sites More sharing options...
RX400h Posted April 21, 2022 Share Posted April 21, 2022 Thanks for the tip. I knew it had something to do with the resistance of the bulbs but did not look up the specifics. Quote Link to comment Share on other sites More sharing options...
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