MERCEDES-BENZ: A1600500101, SMART: A1600500101, Q0367V00300000. We have put as much detail as possible in the part compatibility table above, but the only way to be 100% sure that the part will fit your vehicle is to check the part number on your original unit - If you find that the part isn't right for you for any reason send us a message and we will be happy to arrange a return. If a part is faulty a replacement will be sent out after the return and testing of the old unit. Labour and consequential loss claims are never accepted.