Mercedes SLK R172 Headlight Bulb Replacement | How to Install LED or Halogen Lights (DIY Guide)
Learn how to replace the headlight bulbs on your Mercedes SLK R172 (2011–2020) with either LED or standard halogen bulbs in this step-by-step DIY guide. Whether you're upgrading to brighter LED headlights or just changing a blown bulb, this tutorial covers the tools, process, and tips you need.
