If you have accidently triggered an emergency stop in the SBB RABe 523 and can't seem to get moving again, simply follow the instructions below.

How to recover from an emergency stop:
  1. Wait for the train to come to a complete stop,
  2. Apply the Train Brake to Full Service.
  3. Reset the Throttle/Brake to 0.
  4. Then, move the Train Brake back to Release.
  5. Wait for the brakes to equalise and then apply the Throttle to get moving.

You can watch a video of the process here.

You can find out more about driving the RABe 523 on the S-Bahn Zentralschweiz: Luzern - Sursee by reading the accompanying manual here.