Activating this trainer:
Press F1 at main menu.
Listen for 'Trainer Activated'.
Press desired hotkey. All hotkeys can be changed on the trainer.
NumPad1: No Damage
NumPad2: No Sleep
NumPad3: Infinite Fuel
NumPad4: Change Money By 50000
NumPad5: Unlimited Skill Points
NumPad6: Change EXP By 5000
Money: You must be on the road. Press hotkey to get more money.
EXP: Visit your EXP progress screen and close the screen so you are back at your home screen. Press hotkey and visit your EXP screen again to see changes.
Unlock more trainer options including updates from here - Euro Truck Simulator 2 Trainer