The best thing to do is to read reviews, talk to people in your area, and prepare yourself before taking your car in. Know exactly what you need done, and tell them that's all you have money for. If they tell you that you need something else, take your car to another shop and have a general inspection completed.

Although extended warranties can be very helpful when things start to go wrong with your vehicle, they can also be an unnecessary expenditure when you add up your premiums based on how much you actually have to use it. In your case you have a luxury vehicle and although its 6 years old, is in good shape and well taken care of. Because the value of these vehicles is held for so long I would recommend a warranty if you plan on keeping the car for years to come.

There are several good companies in that area. One of the best can be found at www.rekeying-locks.com/kansas_city_missouri_mo.php. They will fix any sort of lock you may have.