Key, Remote and Transponder Programming With OBD2 Diagnostics in One Handheld
The MUCAR KEY581 is built for locksmiths and workshops: it programs keys, remotes and transponders, runs full OBD2 diagnostics and nine maintenance functions, and tests remote batteries for leakage and voltage.
- 8,000+ Models for Key Work
- Full OBD2 + 9 Services
- CAN FD for GM
- Remote Leakage & Voltage Test
- Lifetime Free Updates
Key Features
-
Immobilizer Matching
Binds the key chip to the vehicle immobilizer system, such as the ECU, through authentication so only authorized keys start the vehicle.
-
Remote Generation and Cloning
Copies the wireless signal of an existing remote to a new remote so it performs the original functions, such as unlocking and car locating.
-
Chip Identification, Cloning and Generation
Reads the original key chip and copies it to a new key, or generates new chip data and writes it to a blank chip compatible with the immobilizer. Online calculation supports ID46, ID48 (96 bits) and Toyota 8A/8H transponders.
-
Key Writing
Writes the new key’s encrypted data into the vehicle ECU or immobilizer system when the original key is not available.
-
Full OBD2 Functions
VIN information, read and clear codes, live data, freeze frame, EVAP system test, on-board monitor test, O2 sensor test, I/M readiness and version information.
-
Nine Maintenance Functions
Oil reset, battery matching, injector, electronic throttle relearn, brake pad reset, SAS reset, gear learn, AFS reset and gearbox learn.
-
Remote Leakage and Voltage Detection
With the test leads, measure a remote’s leakage current (with the battery removed) and its battery voltage.
Highlights

Key Slot and Main Menu
Place the key in the coil slot and choose IMMO programming, remote programming, remote clone or transponder clone.

Leakage and Voltage Detection
On-screen instructions guide remote leakage and battery voltage checks.
More Specifications
| Processor | MT6580, 1.3 GHz quad-core |
|---|---|
| Display | 5-inch touchscreen, 1280 ร 720 |
| Memory | 1 GB RAM, 8 GB ROM |
| Battery | 3375mAh, standby >5 days |
| Wireless | Wi-Fi 2.4G, Bluetooth 4.2 BLE |
What’s in the Box
- KEY581 main unit
- OBD2 main cable
- USB cable
- Test leads
- Quick start manual
- Carrying case

Updates & Support
A built-in key database provides quick reference during jobs.
Good to Know
Caution
- Blank keys require additional purchase.
- Use the leakage and voltage function only on remotes, not on other products.






































