1. Product Overview
The THINKSCAN 689 is a next-generation intelligent diagnostic device powered by Android 10. It offers exceptional, professional, and comprehensive diagnostic features, including DTC reading and clearing, real-time data reading, ECU coding, actuation tests, and specialized functions. It comes in two models: the TK689, which connects to the vehicle via a diagnostic cable, and the TK689BT, which uses a Bluetooth diagnostic connector for wireless connectivity.
This manual provides detailed instructions for the THINKSCAN 689BT model.

Figure 1: THINKSCAN 689BT Diagnostic Tool Overview
2. Components & Controls
The THINKSCAN 689BT device includes the following main components and controls:
- Touch Screen: 8-inch touch screen for user interaction.
- Charging Port: Type-C charging port for charging or data transmission.
- USB Expansion Slot: For connecting a USB expansion module.
- Diagnostic Connector (TK689BT): Bluetooth diagnostic connector for wireless connection to the vehicle's OBD port for diagnosis.
- Power/Screen Lock Button: Press and hold for 3 seconds to turn on or off; Press once to lock or unlock the screen.
- Loudspeaker: Provides audio indicators for connection status and important information.
- Adjustable Kickstand: Designed to support the device on a flat surface or attach it to a steering wheel.

Figure 2: THINKSCAN 689BT Device Layout
What's in the Box:

Figure 3: Package Contents
- THINKSCAN 689BT OBD2 Scanner
- Carrying Case
- ThinkDiag Mini 2 Connector
- User Manual
- Packing List
- 3-in-1 Charger
- TYPE-C Charging Cable
- RJ45 Network Cable
- F-Chassis
- USB2.0 to 10/100M Network Cable
3. Setup & Initial Use
To begin using your THINKSCAN 689BT, follow these steps:
- Power On: Press and hold the Power/Screen Lock Button for 3 seconds to turn on the device.
- Connect VCI: Plug the VCI (Vehicle Communication Interface) into your vehicle's OBDII port / Data Link Connector (DLC). The DLC is usually located within 12 inches of the center of the instrument panel (dash), under or around the driver's side. Ensure the VCI is securely connected and the vehicle's ignition switch is turned ON.
- Wireless Connection: The TK689BT model uses a Bluetooth diagnostic connector for wireless communication with the VCI. Ensure Bluetooth is enabled on the device.
- Internet Connection: Connect the device to a stable internet connection via Wi-Fi for software updates and online functions.

Figure 4: Common DLC Locations
Key Programming Setup (IMMO Basic)
The THINKSCAN 689BT, when used with the TKEY101 key maker, can perform immobilizer programming. Here are the basic steps:
- Cut a new key from a blank that matches your vehicle's brand and model.
- Connect the TKEY101 key maker to the THINKSCAN 689BT device via the USB expansion slot.
- Use the THINKSCAN 689BT scanner to perform the Immobilizer (IMMO) programming procedure.
- Complete the matching process and verify that the new key starts the vehicle successfully.
Video 1: Key Programming Demonstration
4. Operating Instructions
The THINKSCAN 689BT offers a wide range of diagnostic and maintenance functions. Navigate through the intuitive Android 10 interface using the 8-inch touch screen.
4.1 Core Diagnostic Functions
- AutoSearch: Automatically reads the car's VIN, identifies its brand, model, and year, then directs you to the diagnosis functions.
- Diagnose: Manually select vehicle brand, model, and year to start a diagnosis. Intelligent diagnosis is suggested if you are unsure about vehicle information.
- OBD: Supports full OBD II and EOBD protocols for vehicles manufactured after 1996.
- OE-Level Full System Diagnosis: Accesses most car ECUs to read/clear codes, retrieve live data, freeze frame, ECU information, and perform active tests, matching, adaptation, turn off warning lights, and reset monitors. This includes systems such as ABS, Engine, SAS, TPMS, IMMO, Battery, Oil Service, SRS, DPF, Air Conditioning, and Transmission.

Figure 5: OE-Level Full System Diagnosis
4.2 Advanced Functions
- Full Bi-directional Controls (Active Tests): Sends commands to vehicle sub-systems or components for active testing without using vehicle controls. Examples include EVAP Test, Fuel Trim Reset, Injector Buzz Test, Window/Mirror/Door Lock Test, Pump and Value Tests, etc.

Figure 6: Full Bi-directional Controls (Active Tests)
- ECU Coding: Enables multiple car systems to recognize each other and activate actuators. Functions include:
- Online Coding: Connects to OEM servers for online data (e.g., VW/Audi/Skoda/Seat).
- Component Matching: Generates new codes for new actuators or parts.
- Personalization: Unlocks hidden features, deactivates annoying features, modifies settings (e.g., Mercedes-Benz, BMW, Porsche).
- Variant Coding (Offline Programming): Programs ECUs for different vehicle variants (e.g., Nissan, Infiniti, Hyundai).
- Customize OE-Settings (Retrofit/Modification): Enhances vehicle performance and modifies original behavior (e.g., upgrading lights, battery, tires).

Figure 7: Advanced ECU Coding
4.3 Maintenance & Reset Services
The device supports 34+ hot reset services for various vehicle maintenance tasks:

Figure 8: 34+ Hot Reset Services
- Oil Lamp Reset Service
- EPB Electronic Park Brake Reset
- BAT Battery Service
- DPF Diesel Particulate Filter Reset
- SAS Steering Angle Sensor Reset
- TPMS Tire Pressure Monitoring System Reset
- IMMO Key Programming (Basic)
- ABS Bleeding
- Sunroof Reset
- Suspension Reset
- Gearbox (Transmission) Reset
- AFS Headlamp Reset
- Injector Coding
- Throttle Adaptation
- Gear Learning
- EGR Reset
- A/F Reset
- Adblue Reset (Diesel Engine Exhaust Gas Filter)
- Airbag Reset
- Coolant Bleeding
- AT Learning
- Language Change
- Nox Sensor Reset
- ODO Reset
- Stop/Start Reset
- Seat Calibration
- Transport Mode
- Windows Calibration
- Motor angular position sensor calibration
- Engine power balance
- High-voltage battery health detection
- Intelligent cruise control system calibration
- Automatic air conditioning initialization
- GPF regeneration (particle trap regeneration)
Note: Not all reset services are available for all cars. Please contact customer support with your car brand/model/year to ensure compatibility.
4.4 Protocol Support
- CANFD Protocol: Compatible with latest GM vehicles (2020+). Adopts advanced CRC algorithms for faster data rates and reduced error risk.
- DOIP Protocol (optional): Diagnostics over TCP/IP and Ethernet for higher data rates. Compatible with BMW (F&G chassis), Volvo (2018+), Land Rover & Jaguar (2017+).
- FCA (AutoAuth) SGW Access: For Fiat/Chrysler/Dodge/Jeep vehicles (2017-2024). Requires registration for an FCA account and membership fee to perform full diagnostics.
- Renault SGW Access: For specific Renault models. Requires purchasing GW unlocking software and a physical token from Renault's official website.
- Volkswagen Security Gateway: For VW/Audi/Skoda/Seat models after 2018 with firewall gateway. Requires manual SFD activation to obtain a token.
4.5 Other Features
- Report: Records and saves data, including diagnostic reports, data streams, and images for future reference and analysis.
- Repair Info: Accesses a comprehensive repair info database, including DTC code libraries, vehicle coverage lists, and detailed user manuals.
- Auto VIN Scan: Automatic vehicle identification.
- 4-in-1 Live Data Streams: View graphical live data for easy analysis.
- Diagnostic Report Print & Share: Generate and share full system diagnostic reports via Wi-Fi (email).
- Remote Diagnosis: Enables technicians to perform remote assistance.
- Diagnosis Feedback: Submit diagnostic issues to THINKCAR for analysis and troubleshooting.
- View History: Records and allows review/playback of past diagnostic processes.
5. Maintenance
- Software Update: Use the Update function to check for and download new software and applications. Ensure a stable internet connection for successful updates.
- Cleaning: Keep the device clean and free from dust and debris. Use a soft, dry cloth for cleaning the screen and exterior.
- Storage: Store the device in a cool, dry place away from direct sunlight and extreme temperatures.
6. Troubleshooting (Q&A)
- Q: Why does the software upgrade fail?
- A: Please check whether the device is stably connected to the internet.
- Q: Why is there no power with the VCI after connecting it to the vehicle's DLC port?
- A: Please check whether the VCI is securely connected and verify that the vehicle's ignition switch is turned ON.
- Q: Why can't I access the vehicle ECU system?
- A: Please check whether the vehicle is equipped with the system, whether the VCI is correctly connected, and whether the vehicle ignition switch is ON.
- Q: Why does the system stop while reading the data stream?
- A: This may be caused by loose connection. Please unplug the VCI and try again.
- Q: Why does the screen flash when the engine ignition starts?
- A: This is a normal occurrence caused by electromagnetic interference.
7. Technical Specifications
Main Device
- Operating System: Android 10.0
- Processor: 2.0GHz 4-core
- Memory: 4GB RAM
- Storage: 64GB ROM
- Display Screen: 8-inch LCD touch screen
- Resolution: 1280*800 pixels
- Wi-Fi: 2.4GHz/5GHz dual band
- Battery: 4150mAh
- Working Environment: 0~50℃ (32~122 °F)
- Storage Environment: -20~60℃ (-4~140 °F)

Figure 9: Enhanced Hardware Specifications
THINKSCAN VCI (for TK689BT)
- Working Voltage: 9~18V
- Working Current: ≤ 130mA
- Working Environment: 0~50℃ (32~122 °F)
- Storage Environment: -20~60℃ (-4~140 °F)
General Specifications
- Free Update Period: Lifetime
- Software Update: Yes
- Language: Arabic, Czech, Danish, Dutch, English, Finnish, French, German, Greek, Hungarian, Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Russian, Slovenian, Spanish, Swedish, Thai, Turkish
- Software Version: Newest Version
- Hardware Version: Car Diagnostic Tool
- Brand Name: MUCAR
- Origin: Mainland China
- Item Type: Code Readers & Scan Tools
- Certification: CE, FCC, RoHS, WEEE
- High-concerned chemical: None
8. Warranty & Support
Warranty Terms
- The warranty is valid only for users who purchase products through authorized channels.
- THINKCAR provides a one-year warranty from the date of product activation, covering defects in materials or workmanship. The warranty period may be subject to adjustment in accordance with local laws.
- This warranty does not cover damage to the device or its components caused by misuse, unauthorized modifications, use for unintended purposes, or operation in a manner not specified in the manual.
- Compensation for damage to the dashboard caused by defects in this device is limited to repair or replacement. THINKCAR will not be liable for any indirect or incidental damages.
- THINKCAR reserves the right to determine the nature of any device damage based on its prescribed inspection methods. No agents, employees, or business representatives of THINKCAR are authorized to make any confirmations, notifications, or commitments regarding THINKCAR products without explicit authorization.
Customer Support
- Manufacturer: THINKCAR TECH CO.,LTD.
- Customer Service Email: support@mythinkcar.com
- Official Website: www.mythinkcar.com
- Product tutorials, videos, Q&A, and coverage lists are available on the official THINKCAR website.
- A detailed user manual is also available in PDF format: View User Manual (PDF)
9. User Tips
- For key programming tasks, ensure you have the correct blank key for your vehicle's brand and model. The THINKCAR 689BT with the TKEY101 can significantly streamline this process.
- Always ensure a stable internet connection when performing software updates to prevent interruptions.
- When encountering issues with VCI power or ECU access, double-check all physical connections and confirm the vehicle's ignition is ON.
- Utilize the diagnostic report sharing feature via Wi-Fi to easily communicate findings with clients or other technicians.





