How do you disarm the alarm in a 1998 Mercedes ml320?

To disarm the alarm in a 1998 Mercedes ML320, insert the key into the driver's side door lock and turn it to the right to unlock the door. This should deactivate the alarm system. Alternatively, using the remote key fob to unlock the vehicle will also disarm the alarm. If the alarm persists, you might need to disconnect the vehicle’s battery for a short period to reset the system.