Do you have the same problem with your LED taillights?
Have you ever noticed that when the car taillight LED light group is only powered by battery, both lights can light up normally and steadily. When the ignition is turned on, the right parking light begins to operate in its initial sequence and continues to operate.
Even given the proper voltage/current, LEDs are very reliable compared to incandescent bulbs. The reality, however, is that the electronics that do this are very uneven due to cost or design issues. Most devices suffer from multiple issues, such as using faulty capacitors, under-rated heatsinks, and resistors. Voltage regulators are insufficient to protect LEDs from voltage variations, and sometimes currents lower than recommended make it difficult to achieve the desired brightness. Even with a well-known brand, you are exposed to this risk.
You can read about the difficulties of some Cadillac owners who can't use the car because of the premature death of the taillights, which cost as much as $2-3k to replace, and the taillights are considered essential safety equipment without which the car cannot be driven. For something generic, losing it also means things are bound to be worse. Of course it could also be a problem with the control software/hardware, not the light itself. If you have options and feasibility, try swapping the two lights to check if the behavior is still there. If so, it's something to do with the controller, otherwise it's something to do with the LEDs. Or try placing another LED on the affected side to see if the behavior changes or stays the same.
