Mercedes-Benz Headlight LED Ballast/Control Unit – A2189009303, 2189009303 – Front Left Or Right

Is one of your Mercedes headlights acting up?

If you’ve got a CLA (W117) or W176, this might be the fix.

It’s the LED ballast and control module that powers the light.

This particular unit is a direct replacement and is identified by a bunch of part numbers: 2189009303, A2189009303, 1668203589, and A 166 820 35 89 are the main ones.

It’s designed to fit on the front, and it can go on either the left or right side.

So, if your headlight is out but the bulb is fine, this is likely the culprit.

Grab this new, unbranded unit to get your Mercedes lighting up the road properly again.