Please follow the steps below to start the Class 20 Advanced in a cold and dark state. 

1. Enter the cab
2. Turn on the battery by activating the BIS (Battery Activation Switch) by pressing the SHIFT+ B keys.
3. Drag the master key to insert it.
4. Move the AWS Isolation lever to ON (Up)
5. Cancel the AWS warning buzzer and bell
6. Move the reverser to Forward
7. Release the locomotive brakes