L Series:
L4

Advanced Driver Assistance Systems (ADAS) Specialist Certification Test

Objective: To identify Technicians who possess knowledge of the skills required to diagnose, service, and calibrate advanced driver assistance systems on automobiles, SUVs, and light-duty trucks.

Type:
ASE Certification Test Series

Test Content

The ASE Advanced Driver Assistance Systems (ADAS) Specialist (L4) test will cover content focused on the diagnosis, service, and calibration of radar, camera, ultrasonic and other advanced driver assistance systems.

Composite Vehicle

Many of the questions relate to a sample vehicle using advanced driver assistance systems technology used by most manufacturers. This vehicle is described in the Composite Vehicle Type 1 Reference Document that is provided as an electronic pop-up during the test. Review this document (below) prior to taking the L4 test.

Word Experience Requirement

There is no prerequisite for the L4 test. To become ASE L4 certified, technicians must pass the L4 test and provide evidence of THREE years of relevant, hands-on working experience (or an approved equivalent combination of formal training and hands-on working experience). Technicians can take the L4 test before they have the required experience, but they will not receive a certificate until they have submitted proof of work experience.

Study Guides

This guide contains test specifications, tasks lists, sample test questions, and training resources.

ASE Study Guide

Advanced Level L4 – Advanced Driver Assistance Systems (ADAS) Specialist Test Information:This guide contains test specifications, tasks lists, sample test questions, and training resources.

ASE Study Guide

Advanced Level L4 - Advanced Driver Assistance Systems (ADAS) Specialist Composite Vehicle Reference Booklet:This booklet describes the advanced driver assistance systems that are used with many of the questions in the L4 test.

Officially Licensed ASE Test Prep Partner

Established to ensure test prep content accurately reflects current ASE standards and task lists, the Officially Licensed ASE Test Prep Partners go through a comprehensive content and ASE style guide review process. ASE works directly with approved partners to help verify that their materials accurately support candidates preparing for ASE certification tests.

Motor Age Training Logo Motor Age Training Study Guides

Test Times and Number of Questions

ASE Certification tests usually include ten additional research questions that are not counted for score. You will not be told which questions these are, so you should answer every question. No research questions are added to Recertification Tests. You are only eligible to take the Recertification Test when you have previously passed the corresponding initial Certification Test.

Advanced Level Certification Test
TestNameNumber of QuestionsTime Allowed
L4Advanced Driver Assistance Systems (ADAS) Specialist50120

Registration Dates

Winter Registration

January 10, 2026 - March 31, 2026

Spring Registration

April 10, 2026 - June 30, 2026

Summer Registration

July 10, 2026 - September 30, 2026

Fall Registration

October 10, 2026 - December 31, 2026

3 Steps to ASE Testing:

  • Register in your myASE account.
  • Choose how you'd like to test from one of our testing options.
  • Review the ASE Study Guide to help you prepare for your test.

Testing Options:

  • In-person at a Prometric test center
  • Online remote testing, at home or work, for those eligible
  • ASE Renewal App for those recertifying their A-Series certifications

Certification Quick Links & Resources

Register Now Advance registration and payment is required to take ASE tests
Work Experience Requirements See requirements and submit documentation online
Spanish Testing View testing information and the glossary for native Spanish speakers
Test Preparation and Training Learn how to prepare and train to pass your test.
Need-to-Know Guide Download our printable ASE Certification guide
ASE Renewal App A convenient way to maintain your A-series ASE Certifications
Test Fees and Refunds See the initial certification and recertification fees for all tests
All ASE Tests See all tests offered, including xEV, 609 and more

L4 Testing FAQs

The Automobile - Advanced Driver Assistance Systems Specialist (Test L4) is an advanced level certification from ASE. It is geared toward technicians who diagnose, repair, and calibrate advanced driver assistance systems in modern automobiles and light trucks.

The L4 test will have 50 questions and will have a 2-hour time limit.

There is a $34 registration fee plus a $100 Advanced Level test fee.

No. There is no prerequisite for this test.

Yes. To become ASE L4 certified, technicians must pass the L4 test and provide evidence of THREE years of relevant, hands-on working experience (or an approved equivalent combination of formal training and hands-on working experience). Technicians can take the L4 test before they have the required experience, but they will not receive a certificate until they have submitted proof of work experience. For details, visit https://workexp.ase.com

Yes. The L4 test will include an Advanced Driver Assistance Systems Composite Vehicle Reference document. This document will be available as an electronic pop-up document during the test.

The Composite Vehicle Reference document features descriptions of systems, components, calibration procedures, and wiring schematics.

50% of the questions will be generic, and 50% of the questions will be based on the Composite Vehicle. The Composite Vehicle is used to answer these questions. Prior to taking the test, you should take the time to become familiar with the layout, systems, charts, procedures, and schematics in the Composite Vehicle document. See the study guides section of the L4 test series page to download this document.

In addition to the Composite Vehicle document, the ASE L4 Study Guide contains the test specifications, task list, sample questions, and additional training resources. See the study guides section of the L4 test series page to download the official study guide.

The L4 test will be given at Prometric test centers (including satellite sites), just like other ASE tests.

Yes. You can purchase other ASE tests and take them along with the L4 test, or in separate testing appointments—whichever works best for your schedule.

When you pass the L4 test for the first time and have your work experience approved by ASE, you will receive a certificate and a shoulder insignia that identifies you as an ASE Certified Advanced Level Specialist. Additional insignia can be purchased at www.ase.com/store.

Testing FAQs

ASE Certification tests are written in workshops by a national panel of seasoned automotive industry professionals, including working technicians, automobile manufacturers, aftermarket manufacturers, and educators. Not by any single person at ASE.

Exams are segmented by sub-specialty such as automobile, medium/heavy truck, school bus, collision repair, and more. There are over 50 tests, each designed to discern the automotive service technician’s knowledge of job-related skills.

Purchasing and scheduling a test can be done by logging in to your myASE account. To purchase a test, select the test you want to take and pay the applicable fees. A registration fee is charged per order in addition to the test fee. Once you have purchased a test, you will have 90 days from the original date of purchase to schedule an appointment and take your test. Visit myASE to get started.

Certification credentials are valid for five years. If it has been five years or more since you took a test, it’s time to take the corresponding Recertification Test. The five-year requirement ensures certified professionals are current in this rapidly changing industry. You can find your expiration dates on your certificates or in myASE.

You may take the Recertification Tests even if your credentials have expired. You simply must have been previously certified in that specialty area. If you have some certifications that expire soon and others that are still good for some time, you may take Recertification Tests for any or all of them. If you recertify early, you will not be credited with the time remaining on your original certification. The new expiration date occurs five years from the date of your recertification.

If you wish to change your test date or time, you must first cancel the existing appointment before you can schedule a new one. No changes are allowed within three days of your scheduled appointment. To make changes, use the Cancel Selected Appointment(s) option in myASE. For assistance by phone, call ASE Customer Care at 800-390-6789 from 8AM – 5PM Eastern Monday – Friday.

If you wish to cancel a test, you must first cancel any existing appointment for that test AND then cancel the test. Use the Cancel Test option in myASE. If you are within three days of your testing appointment, you cannot cancel the appointment or test. You can only cancel a test and receive a refund for a test that you purchased. For assistance by phone, call ASE Customer Care at 800-390-6789 from 8AM – 5PM Eastern Monday – Friday.

To become ASE Certified, you must pass an ASE test and have full-time, hands-on work experience (or a combination of formal training and experience). The amount of work experience required can vary by test.

It is best to submit your work experience form for review after you have created a myASE account. It does not have to be submitted before you take your test, but your certificate for a passed test will be delayed until your work experience information is reviewed and approved. See the work experience requirements here and complete the work experience form online.