2014 BMW X1 No Crank - WAKEUP signal causing PT‑CAN down

In this video Mario Rojas (aka Super Mario Diagnostics) is faced with a persistent no-crank condition accompanied by constantly running windshield wipers. By analyzing the vehicle's electrical system and tracking the wake-up signal through the PT-CAN bus, the diagnostic process involves systematically isolating various modules to identify the source of the communication fault.

Rojas has been repairing cars since 2013 and sharing his repairs on YouTube for the last five years. True to his username, he primarily focuses on diagnostics and troubleshooting, and he’s garnered quite a following doing so. He currently has over 65,800 subscribers on YouTube and over 5 million total video views.

In this post, Mario relies on ALLDATA information and discovers a small detail that helps him solve a confounding diagnostic. See the entire video for all the details.