The Volkswagen problem of not being able to unlock or start the car is most likely caused by a faulty key fob. The key fob may need to be reprogrammed or the battery may need to be replaced. Occasionally, the issue could be with the immobilizer system in the car which requires a diagnostic test to determine the problem.大众汽车无法解锁或启动汽车的问题很可能是由于钥匙遥控器故障引起的。钥匙遥控器可能需要重新编程或更换电池。偶尔，问题可能与汽车的防盗系统有关，需要进行诊断测试以确定问题。