Mobile diagnostic companies offer an alternative to spending money and training, but there is a catch: finding the company that will do it right. When using a mobile company to do your electronic procedures, verify how, who, what and where. When choosing a company, know what you need to do the job correctly and understand that some space inside your shop may be needed. If you do not have the space, the company doing your procedures should have a controlled environment they can take the vehicle to. If they do not, you may have to resort back to the dealer.