I use this for my GLC and Apple Car play, i'm assuming you plug it in the bit where the cigarette lighter would be? i use this cable for mine - https://www.amazon.co.uk/gp/product/B07VCSC9KS/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
I think Apple car play sucks tbh apart from using google maps on a long journey
I think Apple car play sucks tbh apart from using google maps on a long journey