Hi 2nd post since joining. After picking up my new Ml last week, I managed to have a quick chat with one of the mechanics walking through the carpark. I asked him if there was anything I needed to know about fitting a towbar and towing with the vehicle? He said he had Ml and towed a caravan, he recommended a westfalia detachable and a designated electrical kit, which would then needed to be coded to the vehicle, ie tell the car it has a towbar fitted, He also said that some vehicle need an upgraded cooling fan if the one fitted has less than 850w output???. This is my question to anyone out there with any advice, how do I know if my vehicle needs a new fan??? Thanks in advance for any help received. Andy.