Autel IM608 Lexus GX 2023 ECU Software Version Not Supported?

Problem:

Lexus GX 2023 all keys lost situation. The owner tried to back up immo data with Autel IM608 and g-box failed. Then he does reset immo box but when he tries add key, learning failed.

Error when back up immo data:
The current smart main ECU software version number is not supported.

Solution:

TMLF12-1 (FCC ID: NI4TMLF12-1) is a smart key immobilizer model manufactured by DENSO used in various Toyota and Lexus vehicles. It typically operates on a 314-315 MHz frequency and is used for 8A-type knife keys and push-button proximity systems.

As Autel said, this ECU software version is not supported by Autel IM508/IM608.

Try other devices.

 

User feedback:

Autel failed. Lonsdor K518 pro working fine.

Programmed by lonsdor reset immo.

 

 

How to Solve Autel IM608 Forget Lock Screen?

Problem:

Forget Autel MaxiIM IM608/IM508 lock screen pattern/Security PIN. Why a subscription update won’t save. How do I reset my Autel?

The unlock method depends on your last update date.

Scenario 1 – Tool not updated since before 2025:

• Contact Autel to evaluate your case.
• Send to Autel: Send your IM608 to Autel for evaluation and processing.
• Autel flashes tool back to nomal: the tool is flashed and restored to normal state.

*Remote unlock is no longer available for older firmware.The tool must be evaluated and flashed by Autel.

Scenario 2 – Tool updated in 2025 or later:

• Contact Autel to verify your case.
• Receive unlock instructions: Instructions can be provided via a booked consultation to unlock the screen.
• Access restored: Follow the steps to unlock your IM608/IM508 and regain access.

*Unlock instructions depend on the tool and software version.

Security Note: Instructions are not publicly shared to protect against stolen tools.

 

Autel IM608 Failed to Clone Chrylser EDC16C2 ECU Solution

Problem:

Chrysler PT Cruiser EDC16C2: Cloning ECU with the Autel IM608. I follow the ECU, not the badge. Can I clone this ECU with IM608?

Solution:

No direct ECU cloning option.
The function may not appear where the vehicle badge suggestions.

Where is the correct path?
The 2007 PT Cruiser with a 2.2 Mercedes diesel uses a Mercedes ECU architecture (OM646).
The ECU architecture is Mercedes/bosch.

ECU identified:
Bosch EDC16C2
MPC5xx series
Mercedes OM646 platform.

 

The correct ECU cloning path:

Go to the Mercedes app on the Autel.

Navigate: Immobilizer – Mercedes Expert select – Engine- Control Unit.

Hardware setup

• Bench mode
• G-box
• DB15 cable
• Stable powder

 

Perform ECU data cloning:

Original unit:

Read internal flash
read external flash
Read EEPROM, save files.
Write to the donor.

Donor unit:

Write EEPROM
Write internal flash
Write to the external flash.

On the bench: read internal flash, external flash, and EEPROM from the original- write to the donor.

Key Takeaway: Always follow the ECU architecture, not the vehicle brand.

How Read VAG MQB48 Key Data with Autel APB300 Adapter

Tutorial: How to add a spare VAG MQB48 Key with Autel MaxiIM IM508/IM608 and APB300 adapter.

Model example: VW Passat 1.4T year 2019 with MQB48 smart eky

 

Procedure:

Step 1: Read Vehicle Information

Go to Expert Mode- Key reading via dump- MQB48 (5A)

Read vehicle information.

Place a working key in the sensing area and turn on the ignition.
Read and confirm vehicle information.

 

Step 2: Recognize Key Info

Disassemble original key and remove the circuit board.

Select Recognize key information.
Connect APB300 programmer with Autel IM508/IM608 via USB port.
Place the working key into the recognition area of the APB300 for recognition.
Communicating with the key. The green light on the APB300 will turn on.
Read key ID.

Take a screenshot of the original key ID.

 

Step 3: Calculate IMMO Data

Select Calculate IMMO Data function.

Autel will ask if you want to add an original key or an Autel key.
If you use Autel key, you need to verify it is the Autel key. Autel key allows you to calculate immo data for free.
If you use the original key, it is based on pay-per-use.

Place the Autel standard smart key to APB300 coil and verify it is an Autel key.

Autel will show you key wiring diagrams.

Select one that matches your MQB48 key.
The supplied terminal wire should be welded when prompted by the on-screen instructions on the tablet.

Place the original circuit board into APB300 programmer.

Start reading original key data.
This procedure takes about 5-10 minutes.
Then Autel will calculate immo data. It takes about 2 minutes.
Save immo data.

Step 4: Generate Universal Key
Remove the terminal wire from MQB48 key board and remove cable from APB300.
Choose Universal Key Generation.

Put Autel ikey into the XP400 coil.

Generate ikey with the correct remote program.

Choose the correct frequency.

Must select the correct frequency during the generation process. Cannot change frequency after programming.

Check that a battery has been installed in the universal key, place the ikey in the key slot of the APB300 device.
Generate a universal key successfully.

 

Step 6: Make Dealer Key
Select Make Dealer Key
Upload the IMMO data file.
Place a blank key into the key slot of the APB300 programmer and press OK
Generate the dealer key successfully.

Then if make Autel dealer key, don’t need to remove key shell.
If you add make an original dealer key, must disassemble and remove key shell to generate dealer key.

 

Step 7: Learn Key

Select Key learning
Place the key to be learned close to the sensing coil and turn on the ignition.
If the ignition cannot be turn on, turn on the harzard wanting light.
Upload IMMO data file again.
All keys need to be learned.
Place the 1st key at the sensing coil, keep other keys away.
Place 2nd key at the sensing coil, keep other keys away.
Key learning process completed.

Autel IM508 Peugeot 4A Smart Key Not Start Solution

We would like to share an issue and its solution regarding a 2022 Peugeot 208 4A smart key failing to start the vehicle after key programming. We hope this helps others who encounter the same problem.

 

Problem:

2022 Peugeot 208 smart key 4A tried to add a key with Autel MaxiIM IM508 key programmer. Everything went smoothly, read pin ok and add smart key. It said to turn off emergency indicators after 30 minutes. Did add key 30 min and both keys stopped working. Both keys won’t start.

Solution:

After programming key there’s a 30 min wait before you can start car, wait until hazard stop flashing before trying to start.
30 min waiting time. common on those vehicles just wait.

Autel worked well. He got pin code, pin code is good because he erase original keys (he enter in programmong procedure), and he didn’t program any key to car (because that hazard lights iliminate constant, because there is no any key programmed).
He missed spot for key programming, or key sense area is not working.

Added AKL key 30 min waiting with the turn signals that turn on itself.

 

Feedback:

Came back the next day and went to control unit and keyless system(can). Added another keydiy zb smart key. Did learning for the proximity functions once the key was added on the sense area by holding the lock button for 10 seconds.