Greetings All,

Not sure how long this has been online but ASE has their study Guide for their ADAS L4 test available:

https://www.ase.com/test-series

As of this post, it is not allowing (me at least) to attempt to register for it, but still pretty cool just though I would share.

Thanks for the information.

I had heard this was coming in Spring/Summer 2022, but had not seen this yet.  Thanks for posting!

I called ASE today and spoke with someone in the office.  As of right now the L4 test won't be available till August. 

Awesome. Thank you for calling and providing this update!

Sam M. wrote on Apr 28^th, 2022 at 2:23pm:

Awesome. Thank you for calling and providing this update!

You are welcome, but....

I just got an email today saying the test is available to register for now.  So something changed in the last few weeks. 

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Thank you Jordan, much appreciated, I did not see this.

I am thinking my time frame is going to be mid to end of summer.

I am debating whether to take the exam earlier because if I am not mistaken, if the test is taken now (early summer 2022), you are part of the test takers who's results are used to set the pass/fail rate.

Sam M. wrote on May 22^nd, 2022 at 1:44am:

I am debating whether to take the exam earlier because if I am not mistaken, if the test is taken now (early summer 2022), you are part of the test takers who's results are used to set the pass/fail rate.

Yes, I think you are right.  The test is also longer if you take it now.  I am signed up for it next week, so I will let you know how it is...

Jordan Hill wrote on Jun 2^nd, 2022 at 5:12pm:

I am signed up for it next week, so I will let you know how it is...

Awesome Jordan.

Wishing you all the best on it, And looking forward to any feedback you may have!

Sam M. wrote on Jun 4^th, 2022 at 2:51am:

Wishing you all the best on it

Thank you Sam!


Sam M. wrote on Jun 4^th, 2022 at 2:51am:

And looking forward to any feedback you may have!

I felt pretty good about the test.  I am by no means an expert on ADAS (I have only performed about 15 radar/camera calibrations so far), but there were only a few questions I was unsure about.

This early version of the test is 80 questions, but the final version will only be 40 questions.  Since they are not releasing results to the final test is released you may want to wait.  I decided to take it now since I was nearby a test facility and I had the time now. 

I felt it was easier than L1 and L3 if you have taken either of those.   

Jordan, thank you for the feedback much appreciated.

And great to hear that you have positive vibes about your performance. I found L1 and L3 challenging, so that is a confidence booster for sure to know that L4 may not be as hard.

If interested, check out this podcast, the episode directly discusses the L4:

https://autodiagpodcast.com/2022/06/12/141-adas-l4-ase-test-with-keith-perkins-pj-walter/

I am signed up for L4 in mid July. We'll see how it goes.

Sam M. wrote on Jun 12^th, 2022 at 2:11pm:

If interested, check out this podcast, the episode directly discusses the L4:

Thank you, I will check this out.


Sam M. wrote on Jun 12^th, 2022 at 2:11pm:

I am signed up for L4 in mid July. We'll see how it goes.

You got it, no problem!!  ;)

Hey Jordan,

I took L4 this week. I took the 80 question exam too.  I agree with everything you said, especially it being slightly easier that L1 and L3

I would say that I am somewhat confident I passed, keeping my fingers crossed.

For my 9-5 job, I only work on one car line, so I did invest some time reading service info on other OEMS to be well rounded for the exam, and I found that reading up on late model service info for Toyota, GM, Ford, and Hyundai/Kia served me well and was a good use of my time.

Also, I watched a 7 part series from Autel on youtube on their calibration kits, and that information was really good training as well.

This was a good experience for sure!

Sam M. wrote on Jul 16^th, 2022 at 2:54am:

I took L4 this week. I took the 80 question exam too.  I agree with everything you said, especially it being slightly easier that L1 and L3 I would say that I am somewhat confident I passed, keeping my fingers crossed.

Hi Sam,

Sorry I missed this response from July  :-[.  Glad the test went well for you.  I have only calibrated Toyota and Lexus systems so far, so I did research on the other manufactures also. 

The results still say Pending online.  Not sure when they will update the results. 

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Hey Jordan,

I actually reached out to ASE on Thursday and spoke to a customer service representative.  They said that the folks who participated in the 80 question exam will get their results the second week of October.

For some reason, I thought the grades would be shared with us mid September which was why I called.

The waiting game continues!

Sam M. wrote on Sep 17^th, 2022 at 1:55am:

They said that the folks who participated in the 80 question exam will get their results the second week of October.

Thanks for finding this out and for sharing! 


You said before that you only work on one car line.  Just curious, what would that line be? 

Of course anytime!

I work on Mercedes, Sprinter, and SMART for my full time job.

That was helpful for the L4 just because ADAS related systems have been on Mercedes for a while now.

Sam M. wrote on Sep 20^th, 2022 at 3:05pm:

I work on Mercedes, Sprinter, and SMART for my full time job.

Nice!  So you have been dealing with stuff for a while.  I am not that familiar with MB systems.  Are there static calibrations, or mostly dynamic?

Jordan Hill wrote on Sep 21^st, 2022 at 5:19am:

Are there static calibrations, or mostly dynamic

Honestly, I cannot say one method is employed more than the other. (For example, last month I did a Forward collision prevention Radar unit, it was Dynamic, and I am working on a stereoscopic camera now and it is static and dynamic)

I would describe it as a healthy combination of the following procedures depending on year and model:

1- Static  (Parking Cameras)

2- Dynamic (radar sensors)

3- Static and then Dynamic (Windshield mounted stereoscopic cameras)

4- No formal calibration, just an Initialization, or what the scan tool might call a "zero-point calibration" (Blind-spot/object detection bumper based sensors)

And some radar sensors require a mechanical adjustment first and some do not. It just depends

Before a forget, I good resource I found for ADAS theory is the Bosch Automotive Handbook (I think they are on the 11th Ed.).  It helped me go deeper (perhaps more than needed) for the L4 prep, but as MB uses Bosch quite a bit for their ADAS components, it was super interesting to read Bosch's theory and operation descriptions directly from the supplier

Yep it is 11th Ed.  Also great for anything Automotive

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Sam M. wrote on Sep 22^nd, 2022 at 1:25am:

I would describe it as a healthy combination of the following procedures depending on year and model: 1- Static  (Parking Cameras) 2- Dynamic (radar sensors) 3- Static and then Dynamic (Windshield mounted stereoscopic cameras) 4- No formal calibration, just an Initialization, or what the scan tool might call a "zero-point calibration" (Blind-spot/object detection bumper based sensors) And some radar sensors require a mechanical adjustment first and some do not. It just depends

Thanks for sharing.  Very interesting stuff, and way more fun than brake jobs and water pumps!


Sam M. wrote on Sep 22^nd, 2022 at 1:25am:

Before a forget, I good resource I found for ADAS theory is the Bosch Automotive Handbook (I think they are on the 11th Ed.).  It helped me go deeper (perhaps more than needed) for the L4 prep, but as MB uses Bosch quite a bit for their ADAS components, it was super interesting to read Bosch's theory and operation descriptions directly from the supplier

I have had a few other people mention that book as well.  I haven't picked up a copy yet, but it is on the list. 

Sam M. wrote on Sep 17^th, 2022 at 1:55am:

I actually reached out to ASE on Thursday and spoke to a customer service representative.  They said that the folks who participated in the 80 question exam will get their results the second week of October.

If you took the exam, it looks like the scores posted Friday evening. :)

Sam M. wrote on Oct 8^th, 2022 at 1:47am:

If you took the exam, it looks like the scores posted Friday evening.

Thanks for the heads up! 

It is a  :) for me too.