Work Truck Logo
MenuMENU
SearchSEARCH

ASE Drops Prerequisite for L4 ADAS Specialist Certification Test

ASE has dropped the prerequisite test requirements for the ASE Advanced Driver Assistance Systems Specialist Certification test (L4), so now more technicians will be able to take the test.

Close-up image of a blue keyboard button with the word test and inset logo for ASE.

The ASE L4 test covers content focused on the diagnosis, service and calibration of radar, camera, ultrasonic and other advanced driver assistance systems. 

Photo: ASE/Work Truck

2 min to read


The National Institute for Automotive Service Excellence (ASE) has removed the prerequisite test requirements for the ASE Advanced Driver Assistance Systems (ADAS) Specialist Certification test (L4), allowing more fleet service professionals to take the test.

“Shops are performing more ADAS service and repairs than ever before, and it is important that they can demonstrate to their customers that the service professionals on staff can diagnose, service and calibrate ADAS on vehicles,” said Dave Johnson, president and CEO of ASE. “By removing the prerequisites to taking the L4 test, more service professionals are eligible to prepare for and take this challenging test.” 

Ad Loading...

What the ASE L4 Test Covers

The ASE L4 test covers content focused on the diagnosis, service and calibration of radar, camera, ultrasonic and other advanced driver assistance systems. Many of the questions relate to a sample vehicle with ADAS technologies used by most manufacturers. This vehicle is described in the composite vehicle type 1 reference booklet provided as an electronic pop-up during the test. 

“ASE certifications are the benchmark for recognizing knowledgeable service technicians,” Johnson said. “Because today’s vehicles are equipped with increasingly complex ADAS systems, vehicle owners must rely on the competency of service professionals to ensure their safety. Earning the L4 ADAS certification is the most effective way for a service professional to demonstrate the proficiency that both employers and customers value.”

A free study guide is available to help work truck fleet technicians with ASE L4 test preparation is available on the ASE website.

More Maintenance

Screenshot of the PartsASIST online parts marketplace showing brake drum search results for Horizon Truck Centers. The interface includes product listings, pricing, filters, shopping cart options, and navigation menus for fleet and company management.
MaintenanceMay 12, 2026

Mack Trucks Unveils Redesigned PartsASIST Platform with Enhanced User Experience

Mack Trucks has redesigned its online parts-ordering platform, PartsASIST. The updated website features a modernized user interface and new tools designed to simplify the parts-purchasing experience for customers and dealers.

Read More →
Work Truck graphic asking fleet professionals to share their insight through a survey about what makes trucks reliable for fleets
Maintenanceby Lauren FletcherMay 11, 2026

What REALLY Makes a Truck Reliable? We Want Your Input!

Work Truck is gathering real-world fleet insight on truck reliability. Share your experience and help shape upcoming editorial coverage.

Read More →
Podcast cover graphic with Work Truck and TruckChat logos, bold text reading “Heavy-Duty Power. Medium-Duty Package.” and a red Cummins X10 engine.
MaintenanceMay 9, 2026

Cummins X10 Brings Big Power in a Smaller Package

Cummins X10 brings heavy-duty power to a medium-duty package. Hear what fleets need to know on this TruckChat podcast episode.

Read More →
Ad Loading...
Promotional graphic showing Wagner ES brake pads, premium rotors, ES rotors and brake bolt kits for commercial vans and heavy-duty work truck applications.
Maintenanceby StaffMay 7, 2026

DRiV Expands Wagner Braking Lineup with New Solutions for Work Trucks and Commercial Vans

DRiV expands Wagner braking products with new pads, rotors, and hardware designed for commercial vans, heavy-duty pickups, and vocational fleets.

Read More →
Two white box electrical items with a logo for Vanair.
MaintenanceMay 1, 2026

Vanair Introduces EPEQ IM HVAC System Designed to Extend Fleet Asset Life & Reduce TCO

Vanair’s new EPEQ IM HVAC system offers automatic idle management with factory HVAC integration and eliminates engine wear from unnecessary idling.

Read More →
Shades of Fleet Technicians Voices What the Job is Really Like from Truck Chat with Lauren Fletcher blue background with mechanic
Maintenanceby Lauren FletcherApril 30, 2026

What It’s Really Like to Be a Technician | Shades of Fleet

Real technicians share what the job actually looks like, from tough days to evolving technology and the problem-solving behind fleet operations.

Read More →
Ad Loading...
Square promotional graphic for TruckChat’s Shades of Fleet: The Technicians Table featuring two diverse technicians working together on an engine in a repair shop with bold text reading “Technicians = Problem Solvers” and “The Job Is More Than You Think.”
MaintenanceApril 30, 2026

What It's Really Like to Be a Technician

This conversation is about the reality of the work as a technician in fleet. The pressure, the problem-solving, the pride, and the people behind it.

Read More →
Two post auto lift displayed against a blue background with logo for BendPak and small headline APEX by BendPak AL10C Two-Post Lift.
MaintenanceApril 22, 2026

The APEX by BendPak AL10C Two-Post Lift Offers Affordability & 10,000-Pound Lifting Capacity

The APEX by BendPak AL10C Two-Post Lift is the company’s lowest-priced 10,000-pound two-post lift, but it still has full features, including automatic safety locks and flexible arm positioning.

Read More →
Photo of tractor trailer traveling down the road toward the camera.
Maintenanceby Wayne ParhamApril 21, 2026

ServiceUp Expands Repair & Maintenance to Class 4–8 Vehicles

ServiceUp has expanded to support Class 4-8 vehicles, providing repair and maintenance workflows across light-, medium-, and heavy-duty assets within a single system.

Read More →
Ad Loading...
Blue background image of socket set and tools with headline across the top Survey Results: and large yellow headline 57% of Shops Understaffed.
Maintenanceby News/Media ReleaseApril 20, 2026

Survey Results: 57% of Shops Understaffed

The sixth edition of Fullbay’s State of Heavy-Duty Repair survey found that 57% percent of heavy-duty repair shops are understaffed.

Read More →