What’s the difference between Xhorse Key Tool Plus and Key Tool MIDI?
Some people are still confused about these two scanners. Here is a simple comparison of their function.
| IMMO Programming | Key Tool Plus | Key Tool MIDI | 
|---|---|---|
| Mercedes-Benz FBS3 | √ | ❌ | 
| VW/Audi/Skoda 4th Gen | √ | √ Some models require programmer | 
| VW/Audi/Skoda MQB | √ | √ Some models require programmer | 
| Audi 5th Gen | √ | √ Some models require programmer | 
| Audi/Porsche MLB models | √(Works with MLB-TOOL adapter) | √ (Works with MLB-TOOL adapter) | 
| BMW CAS1–3 | √ | √ Some models require programmer | 
| BMW CAS4/FEM/BDC | √ | √ Some models require programmer | 
| Porsche | √ | √ Some models require programmer | 
| Land Rover/Jaguar 2015–2018 | √ | √ Some models require programmer | 
| Land Rover/Jaguar 2018– | √ | √ Some models require programmer | 
| Volvo | √ | √ Some models require programmer | 
| Other common models | √ | √ Some models require programmer or adapter | 
| Programmer | ||
| 8-pin EEPROM | √ | √ | 
| IMMO Module | √ | √ | 
| Instrument Cluster Module | √ | ❌ | 
| Transmission Module | √ | ❌ | 
| ECU Module | √ | ❌ | 
| Vehicle Diagnostic Function | √ | √ | 
| Transponder Identification and Clone | √ | √ | 
| IMMO Data Tool | √ | √ | 
| Remote Generation | √ | √ | 
| Key Cutting (App) | √ | √ | 
| Cloud Diagnosis Mode-C | √ | √ | 
| TPMS Functionality (with TPMS Adapter) | √ | √ | 
Summary:
Xhores Key Tool Plus (Advanced Version – One-Step Solution):
- Fully supports IMMO programming across all major brands including Benz FBS3, MQB, Audi 5th Gen, and BMW CAS systems.
- Built-in programmer for EEPROM, IMMO, Instrument Cluster, Transmission, and ECU modules.
- Offers comprehensive vehicle diagnostic capabilities.
- All features are supported without requiring additional adapters or programmers (except MLB adapter for MLB models).
- Suitable for advanced users, locksmiths, or workshops needing all-in-one coverage.
Xhorse Key Tool MIDI (Advanced Version – Value-for-Money Choice):
- Supports many IMMO functions, but some models require additional programmers or adapters.
- Does not support Benz FBS3.
- Lacks support for programming IMMO, Instrument Cluster, Transmission, and ECU modules.
- Retains strong functions in diagnostics, remote generation, cloning, and TPMS.
- Best for users with budget constraints who already have some external programmers or only need selective functions.
Conclusion:
- Key Tool Plus = All-in-One, Powerful, Ideal for Professionals.
- Key Tool MIDI = Budget-friendly, Limited Programming, Good for Semi-Pros or Supplementary Tool.



















