When programming a 2019–2024 Toyota Corolla remote with the Autel IM508S, you may encounter the error: “The key type is incorrect. Use general low-fre universal key”. This issue is not a tool malfunction but is commonly caused by the incorrect use of key types during the generation process. Specifically, users often mistakenly attempt to use the IKEYTY8A3BL (Toyota Premium Style) for a system that requires different hardware specifications.
The Problem: IKEYTY8A3BL Generation Failure
Technicians have reported that the Autel IKEYTY8A3BL consistently fails when generating remotes for newer Corolla models. Despite the key being new, the IM508S identifies a hardware mismatch. The tool detects that the vehicle’s remote system is low-frequency and requires a specific universal key type that the premium Toyota-style iKey cannot emulate for this application.
Technical Root Cause: 8A vs. 4A Architecture
The failure to generate the remote stems from a fundamental difference in chip architecture:
- Vehicle Requirement: The 2019–2024 Toyota Corolla often requires a 4A chip configuration for successful remote generation.
- Hardware Limitation: The Autel IKEYTY8A3BL iKey is specifically designed for 8A series systems.
- Incompatibility: Because it is an 8A-specific key, it cannot be used for 4A key generation. The IM508S software blocks the process because it detects a mismatch in both frequency and chip architecture.
The Solution: Switch to Standard Style iKey
To resolve the error and successfully generate the remote, you must change the hardware to a compatible universal key:
- Recommended Hardware: Use an Autel Standard Style iKey, such as the IKEYAT004CL.
- Result: Switching to the Standard Style universal key allows the IM508S to correctly configure the low-frequency 4A parameters required for the Corolla.
| Incompatible Key (8A Style) | Compatible Key (Standard Style) |
|---|---|
| IKEYTY8A3BL (Toyota Premium Style) | IKEYAT002AL, IKEYAT003BL, IKEYAT004CL, IKEYAT005BL, etc. |
| Fails on 4A Systems | Supports 4A Generation |
Read also:
Fixed: Autel IM508S Toyota 8A IKEY “The Key Type Is Incorrect” Issue
Technical Support & Resources
If you continue to experience issues with key programming or hardware compatibility, contact Autel technical support:
- Email: sales@AutelShop.de
- Wechat: +86-13429866263
- Whatsapp: +86-13429866263
- Website: www.autelshop.de