kat 6 et al.,
Terribly sorry to hear of your problems. You certainly have more patience than I do. If I might let me please add my two cents (talk really is cheap!).
I am quite sympathetic to your concerns about reliable transportation to get to work. However, from what you’ve described it’s already a bit of an issue with your employer so to me you’ve reached the point of diminishing returns regarding warranty repairs. Do you have a generous family member or friend whose car you could use on the cheeap when necessary? Perhaps the dealer gives you a loaner free or you have some such provision in a motor club membership or your auto insurance policy.
You’ve also given us quite a bit of technical information. However, by now all this is nibbling around the edge. It seems to me that this has passed from the technical stage to the business or legal stage.
I am neither technician nor auto dealer, banker nor lawyer, so take this all with a grain of salt. First, if you have a loan, your bank has an interest in their collateral (your car). It might be useful for them to contact the dealer. I don’t know if you’ve asked the bank about this, or even if it’s a good idea, but it’s something you might check out.
Secondly, if you haven’t already started a lemon law action, it might be good to notify the dealer that you intend to do so. That might be enough to finally get them to finally do what’s necessary. Same thing for a Better Business Bureau intervention. In both cases I suggest that you send such correspondence to the owner of the dealership, or at least the General Manager - I think you’ve exhausted any benefit of dealing with the Service Department. When you do so, include copies of all the service and towing records: It’s amazing sometimes how little the parents know about what the kids have been up to! It might help to contact the manufacturer directly with all this information as well.
Henceforth, with all correspondence to any parties, send everything Certified Mail/Return Receipt Requested (even to the folks that are on your side such as an attorney or the BBB). This has the advantage of providing a record not only that you sent it, but that the addressee received it. I’ve found generally that when Party B knows that Party A knows that the correspondence has been received, it tends to focus Party B’s mind a bit more.
I’m also hesitant about doing anything with a booster or charger. The clamps could leave telltale marks on the battery post and telltale information in some elctronic system- but again I’m no technician.
Sorry I’m so long-winded. I wish you all the best.