What is the reason why the PiAA530 auxiliary light does not light up?
2 Answers
There may be a loose connection in the filament or socket inside the bulb, or a fault in the sensor or control circuit. Below is an introduction to the steering auxiliary light: 1. Function: The steering auxiliary light refers to a separate set of bulbs on one side that light up when the driver turns the steering wheel (some vehicles also use fog lights as steering auxiliary lights), helping to illuminate the blind spot on the curved road while driving. Shortly after the steering wheel is straightened, the single-side steering auxiliary light will turn off. 2. Common auxiliary lights: Generally, common steering auxiliary lights come in the form of independent bulbs, which are placed inside the headlight cover. Some vehicles also use front fog lights as steering auxiliary lights. Compared to steering headlights, steering auxiliary lights have a lower cost, and their effectiveness in illuminating blind spots is not as good as steering headlights.
I've installed this auxiliary light myself before. To troubleshoot why it's not lighting up, we need to check several aspects. The main issues could be the bulb itself, the power supply circuit, or the control module. The easiest first step is to check if the bulb is burnt out - these bulbs typically last only 200-300 hours. Remove it and check if the filament is broken. Next, inspect the fuse box, locate the fuse corresponding to the auxiliary light, and use needle-nose pliers to pull it out to see if the thin wire inside is broken. If the fuse is intact, then trace the wiring harness to check if the battery positive terminal connection is loose, or if there are any signs of the wire insulation being melted by engine heat. Finally, pay special attention to the relay - try plugging and unplugging that small black box a few times, as oxidized contacts causing poor connection are common issues. If you still can't figure it out, I recommend going to a professional modification shop to use a circuit tester to check for error codes.
