Chosen Solution
My son has this car and one of the red wires has become un-soldered from the boards. and I’m not sure where it needs to be re-attached.
Josh Sommer, Go to step 3 of the attached guide to see where red wire attaches to the mother board. Good luck. I hope this helped you out, if so let me know by pressing the helpful button. Beiens Cartoon RC Race Car LED Light Replacement