Tech Stuff

Reflashing tips and tricks: Part I

Portillo is the head technician of Car Clinic, a state-of-the-art automotive repair facility in Mahopac, N.Y. He is a protégé of Jerry Truglia and has been trained by Automotive Technician Training Service and is TST certified. His real-world, in-depth diagnostic articles will appear in Auto Service Professional on a regular basis.

Reprogramming is easy if you reflash the same vehicle all day, but it can get difficult if we work on several different makes and models. Here, we are going to cover how to reflash a selection of examples, using specific tools:

- Hyundai/Kia with a J2534 device

- Honda with the MVCI

- Toyota with the Techstream/J2534 device

- GM with a MDI/Drew Tech Mongoose Cable/J2534 device

- European vehicles using an Autologic

Reflashing a Hyundai

Reflashing a Hyundai is not only easy with a J2534 device, it is totally free. Here is how we do it:

1. (see Hyundai Figure 1): Go to and log in with your username and password.

Hyundai Figure 1
<p>Hyundai Figure 1</p>

2. (see Hyundai Figure 2): Click on “Diagnostic Tools” in the middle and click on “J2534 link.”

Hyundai Figure 2
<p>Hyundai Figure 2</p>

3. (see Hyundai Figure 3): Follow the instructions that appear on the screen. They are all standard stuff, such as put the vehicle KOEO and make sure a battery maintainer is on the car. Instructions on how to download the J2534 update program is on the same page.

Hyundai Figure 3
<p>Hyundai Figure 3</p>

4. (see Hyundai Figure 4): J2534HMA will be visible on the desktop. Simply double click on it.

Hyundai Figure 4
<p>Hyundai Figure 4</p>

5. (see Hyundai Figure 5): Simply click “OK.” The program will automatically look for flash updates.

Hyundai Figure 5
<p>Hyundai Figure 5</p>

6. (see Hyundai Figure 6): The program simply displays both the old and new Calibration IDs. Simply click OK to start the reflashing.

Hyundai Figure 6
<p>Hyundai Figure 6</p>

7. (see Hyundai Figures 7 and 8): The screen will say “reprogramming” during the event, but will not have any sort of status bar, so you will have to see the screen in Figure 8 to know that it is done. Then, simply click OK and you are done.

Hyundai Figure 7
<p>Hyundai Figure 7</p>

Hyundai Figure 8
<p>Hyundai Figure 8</p>

Tags: Honda  Hyundai 
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