Ship From: EU/UK/US/CNKD-X4 combines the functions of: KD master + KD MAX + KD MATE + KD MINI PROG
Please note that our KEYDIY tools do not support the following languages:
Polish, Chinese, Slovenian, Turkish, Brazilian, Portuguese, Hebrew, and Persian.

The KD-X4 is a professional all-in-one device that integrates recognition, generation, copying, programming, and matching. It can operate independently or connect seamlessly to tablets, smartphones, and PC software, offering flexible modes to suit any workflow.
Locksmiths can choose the operation mode that best fits their habits, while enjoying exclusive access to industry-leading features.
The device supports a wide range of functions, including frequency detection (up to 2.4G), remote control generation and simulation, keyless remote simulation, remote copying, chip recognition and duplication, chip generation and acquisition, key unlocking, IMMO programming, programmer data reading and writing, online upgrades, and more.
With simple operation, stable performance, and broad car model coverage, the KD-X4 has become an essential tool for professional locksmiths.

KEYDIY KD-X4 Features:
- Industry debut UWB (Bluetooth) key detection
- Industry-exclusive Toyota used key unlock free programming
- First to release the MLB chip detection function
- CANFD integration, no other accessories required
- 24V Chinese heavy-duty truck model programming
- Built-in programmer function, will support 5A mileage function
- A one-second startup greatly improves a locksmith's work efficiency
- Supports 19 languages, including Arabic, Korean, German, Spanish, English, Chinese, etc
- One wire harness can cancel the Ford alarm and program the Toyota 8A blade key all key lost situation(Need to purchase separately)
- 2018-2024 Jaguar and Land Rover smart key programming (JPLA / K8D2 / J9C3 / M9R3 systems)
- Supports BMW G Series BDC2 add key with BDC2 adapter
- Supports VAG MQB/MLB. Add key no removing cluster with the KD-MP tool
- Supports the BMW G chassis BDC3 add key function. No need for access to the vehicle, get data from the original key. (must generate KD FGB23/KD FGB57 remotes, coming soon)
- Keydiy PC Software (KD TOOLS) is available now. Download PC software here.
KD-X4 Innovation Funcion
- Yamaha ID47/ID49 motorcycle key barcode retrieval function
- Toyota, Hyundai Kia smart key programming
- Detect 868MHZ and 902MHz frequency remote detection
- Detect MLB Key
- Detect Bluetooth Key
- Suzuki/Honda motorcycle read PIN Code
Keydiy KD-X4 User Manual

KD X4 Specifications:
Battery capacity: 3.7V 3500MAh
Input power: 12V/24V/5V 1A
Working temperature: -30-50 degrees Celsius
Storage temperature: -40-60 degrees Celsius
Display: 1.8-inch color screen
Size: 200X120X40MM
Connectivity: Blooth, USB2.0(TYPE B)
KD-X4 Function and License (Lifetime license)
Button and Interface Function Description
-
Power On/Off Button:
- In the off state, press and hold the power button for 2 seconds to turn on the device.
- When the device is on, press and hold the power button for 2 seconds to turn it off.
-
Chip Recognition Button:
- Press to enter the chip detection function.
- Long-press to access the function-switching menu, where you can select:
- Chip Recognition
- Ignition Coil Detection
- System Settings
-
Remote Copy Button:
- Press to enter the remote normal copy function.
- Long-press to access the function-switching menu, where you can select:
- Normal Copy
- Special Copy
- Remote Data Comparison
-
Frequency Detection Button:
- Press to enter the frequency detection mode within 315MHz.
- Long-press to access the function-switching menu, where you can select:
- Frequency Detection within 315MHz
- 433.92MHz Frequency Detection
- Battery Voltage Detection/Leakage Detection
(Refer to Figure 3 on the right)
-
Key Induction Coil and IMMO Chip Placement Hole:
- Used for identifying and copying car key IMMO chips.
- Can also generate KD remotes wirelessly.
-
Frequency Detection Area:
- Place the key in this area and press the remote control button to detect the frequency.
-
Power Indicator Light:
-
Power On Status: Indicator light flashes.
-
Charging Status: Indicator light stays on and turns yellow.
-
Fully Charged Status: Indicator light stays on and turns green.
-
Display Screen:
- Displays device information, key information, and more.
-
USB Interface:
- Used for charging or connecting to mobile phones or PC terminals via a wired connection.
-
Programmer Interface:
- Used to read data from Volkswagen MQB dashboards, Audi dashboards, BCM data, and various octagonal chip EEPROMs.
-
Wired Programming Interface:
- Used for KD wired remote generation, unlocking original keys, detecting remote battery voltage, and leakage detection.
-
Collecting Antenna:
- Collects car ignition data, tests ignition coils, performs chip simulation, and other functions.
-
External Acquisition Antenna Interface:
- Used for collecting car ignition data, ignition coil detection, chip simulation, and similar functions.
-
Toyota Adapter Cable Interface:
- Used for Toyota/Lexus smart key all-key-lost scenarios.
-
OBD Main Cable Interface:
- Connects the external OBD II cable to the car.
- Works with the Mobile KD App to enable programming functions.
Product Warranty Instructions
The warranty period for KD-X4 devices is one year, starting from the date the user activates the device.
- If a malfunction occurs during the warranty period and is confirmed by our professional personnel to not be caused by user error, our company will provide the following services free of charge:
- Repair
- Replacement of components
- Maintenance
- If the warranty period has expired, a repair fee will be charged for any repairs or services needed.
Package includes:
- KD-X4 device
- OBD main cable
- USB cable
- Toyota adapter cable
- Programmer adapter board
- Programmer wiring cable
- Remote control burning cable
- Key unlocking cable
- External acquisition antenna
- Carry Case