LED Lights / Indicators setup

First steps:

If you install LED lights - be it headlights, tail lights, indicators, etc., there is a high chance that you will get one of the following:

  • fast blinking indicators

  • flickering headlights

  • no headlights

  • no DRL

  • light malfunction warning on the dashboard

If any of these issues occur:

  • connect to your vehicle with JScan

  • go to Adaptations section

  • find LED Light settings or a similarly called group, OR, use the search (the green icon with a magnifying glass) and search for LED

  • identify settings called “LED <type of light> present ON/OFF” and enable it for every LED light you have

    Note

    If there is no setting for a given type (i.e. no LED Fog Lights for Wrangler JK) it means the vehicle software is not designed to accomodate for LED lights of a given type. You’ll have to install resistors (a.k.a. “anti-flicker harness”) or a CAN-compatible LED bulb.

Troubleshooting:

If the following steps didn’t solve the problem, you can try to:

  • search for adaptations with the word “diagnostic” or “DTC” and disable to disable the persistent trouble code (only in newer vehciles)

  • locate the HID (HIgh Intensity Discharge) Headlights Present, Quad Headlamp Present, and or Bi-Xenon Headlamp present and try if enabling any one or any combination of them eliminates the flickering. If not, you’ll need a harness or better quality headlamps

  • find an adaptation with the word “voltage” and ensure you set the DRL / LED headlamp volatage to 12-14V (most LEDs will not work at all on lower voltage settings and it’s not possible to adjust LED brightness with a lower voltage - this trick works only with traditional bulbs)