Car has 50,000 miles and vehicle has a bulletin on the vehicle from Audi, where the vehicle gs into limp mode and only shift through certain gears, rendering the vehicle, unable to drive and creating a safety hazard due to the fact that it cant drive at Highway speed and or jolt and skips gears. Code for the P173600 known issue by Audi, went into mode while merging onto freeway and a lost control of vehicle.