TechFix Episode 5: Auto Set, Auto Release, Auto Hold and the all-new Volvo VNL

Presented by Volvo Trucks Academy

The TechFix video series delivers quick, practical tips to help technicians work smarter and repair with confidence.

Episode 5 explains how Auto Set, Auto Release, and Auto Hold function within the Electronic Braking System on the all-new Volvo VNL. The video walks through how these features interact with the tractor protection system, pneumatic controls, and electronic logic to determine when parking brakes apply and release automatically.

Technicians will learn how the system makes decisions, which components command specific actions, how trailer system interaction affects operation, and how to approach diagnostics with a clear understanding of both electronic and pneumatic behavior. The episode also reinforces the importance of using guided diagnostic procedures and understanding normal system operation before replacing components.

The takeaway: These systems are designed to work together. Understanding which system is commanding the action—and why—is critical to diagnosing concerns accurately and avoiding unnecessary parts replacement.

Click here to watch now.