Did you not have this pdf to use as reference? (also available when using search function in this forum, applicable to fog lamps in R171 with AMG style fog lamp)
It depends... sorry I can't be more specific, but it can vary from model to model, and country to country. My UK-spec SLK 55 AMG front fog lights take H7 bulbs, but it would appear that some other countries have HB4s fitted (according to online manuals).What kind of bulb is used in the front fog lamp? is it HB4?
From your profile: SLK55, then the fog lamps are H7's.What kind of bulb is used in the front fog lamp? is it HB4?
Make sure you have spare plastic ties (the long ones, IIRC, 18 inches or more), see pdf as previously posted above.Thank you guys I will take it out and check