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Retrofitting LED Bulbs - How to Find the Correct E-Mark Number

How to Find the E-Mark on Your Headlights

1. Clean the Headlight

Before you begin, make sure the headlight is clean. Dust, dirt, and insects can make it difficult to find and read the E-mark. Use a soft cloth and a mild cleaner to clean the surface.

2. Inspect the Outside of the Headlight

The E-mark is often located directly on the headlight glass or near the edge. It typically consists of:

  • A circle with an "E" followed by a number (e.g., "E1" for Germany or "E4" for the Netherlands).
  • A longer number indicating the specific certification.

Tip: Use a flashlight to make it easier to read, especially if the mark is faded.

Example of E-Mark marking

3. Check the Headlight Housing

If you can't find the E-mark on the outside, it may be printed on the reflector itself or inside the headlight housing. To inspect this, you should:

  • Open the hood and access the top/back of the headlight housing.
  • Use a flashlight and look for the mark through the headlight glass or on the back of the reflector.

4. Use a Mirror or Camera

If the mark is hard to see, a small mirror or a camera with a zoom function can help you get a better angle.

How to Match the E-Mark with LED Bulb Approval?

Once you have found the E-mark on your headlights, you need to compare it with the documentation from the LED bulbs. The LED bulbs typically come with a list of compatible E-marked headlights. Check:

  • That the E-mark number on the headlights matches the list.
  • Any additional requirements the manufacturer may mention.

Example: If your headlights have the E-mark "E1 12345", and this number is listed in the LED bulbs' documentation, your headlights are compatible.

What to Do If the E-Mark Doesn't Match?

If the E-mark on your headlights does not match the LED bulbs' approval list, do not install the bulbs. Incorrect use can lead to:

  • Reduced road safety.
  • Fines and issues with the inspection report.

In this case, contact the manufacturer for further guidance or consider alternative solutions.

Final Tips

  • Always check your car's user manual for additional information about the headlights.
  • If you are unsure about compatibility, contact an authorized mechanic or the LED bulb manufacturer.
  • Remember, proper installation is not only about legality but also about your and others' safety on the roads.

With this guide, you are ready to find the E-mark on your original headlights and ensure that your new LED bulbs comply with the regulations. Happy working – and drive safely! 🚗💡