Q: Anti-theft alarm won't allow car to start.

If you can, try to lock the doors with the key and then wait for the alarm to set. Then unlock the drivers door with the key. This should禁用警报. If it does not, then try doing the same but using the passenger door. If it still does not work, then you will need to get a battery for the key fob if this is the only way for the alarm to be disabled. If this is a non-factory alarm, then you should have a仪表板下的小重置按钮that will reset alarm when key is set to On position. For the new key fob battery, you could always try asking a friend for a ride, use a ride-sharing application, or use public transportation to get to a location that can provide the new key fob battery.