Instructions. Locate and remove the negative battery cable from the negative terminal on the battery using a wrench. Raise the front of the car on a jack, then place a set of jack stands under the frame rails to support it.Remove the jack so it is not in the way. Locate the starter from under the front end of the car.nstructions. Locate and remove the negative battery cable from the negative terminal on the battery using a wrench. Raise the front of the car on a jack, then place a set of jack stands under the frame rails to support it. Remove the jack so it is not in the way. Locate the starter from under the front end of the car.
Pain in the upper back of the thigh may be caused by irritation of the nerve roots coming from the lumbar and sacral spine. These nerve roots join to form a large sciatic nerve, which runs down from the lower back to the back of the leg. People may experience symptoms of sciatica in different ways.
Other possible causes of thigh numbness include problems with nerves that connect to the lateral femoral cutaneous nerve. For example, nerves in the lower back connect to the nerves of the thigh, so disc disease that compresses nerves in the lower back may cause numbness in the thigh. It's likely that your doctor can find out the cause of your numbness just by reviewing your symptoms and performing a physical examination.