I have a 2023 Tesla Model Y and was trying to modify the rear lights to keep some lights on while turning the others off. To do this, I cut a red wire and then reconnected it by twisting the two ends together.
(it works when i press the break and signals)
After that, both right-side rear parking lights stopped working: one is on the tailgate, and the other is on the body of the car. However, the right brake light and turn signal still work normally. All the lights on the left side are working.
In Tesla Service Mode, the error VCRIGHT_a312_right-TailLightFault appears. This could be related to a disconnected light, insufficient current draw, or an eFuse that has tripped as a protective measure.
I have already tried locking the car for 20–30 minutes to see if the system would reset, but the problem persists.
What I need to find out: whether the eFuse for the right rear light circuit has tripped and, if so, how to reset it correctly.