Subscribe for a welcome offer
Free standard shipping on all orders
  • THINKCAR ThinkDiag bluetooth OBD2 diagnostic dongle physical product display
  • THINKCAR ThinkDiag bluetooth OBD2 dongle with ECU coding, biโ€‘directional control, fullโ€‘system diagnostics and 15 reset service functions
  • THINKCAR ThinkDiag bluetooth OBD2 dongle infographic showing 15 special maintenance reset service functions
  • THINKCAR ThinkDiag bluetooth OBD2 dongle showing biโ€‘directional active test interaction between smartphone app and vehicle
  • THINKCAR ThinkDiag bluetooth OBD2 dongle ECU coding function demonstration
  • THINKCAR ThinkDiag simplifies vehicle diagnostics with smart technology: live data viewing, health report and auto VIN identification via mobile app
  • THINKDIAG dongle and THINKCAR phone app showing full-system coverage for engine, ABS, SRS, transmission, TPMS, steering, and A/C, plus code reading, live data, and freeze frame
  • THINKDIAG Bluetooth dongle held beside iPhone and Android screens, with App Store and Google Play badges
  • THINKDIAG handheld Bluetooth dongle next to the THINKCAR phone app, with callouts for easy setup, iOS and Android support, and save-or-print reports
1 9
ThinkCar DIY

THINKCAR ThinkDiag

$89.00 USD
$89.00 USD
Sale Sold out

Free shipping ยท 2โ€“7 business days

The THINKDIAG turns your smartphone into a powerful professional-level automotive diagnostic scanner. Built for DIY mechanics, advanced car owners, and small repair shops, this compact Bluetooth diagnostic tool combines full-system diagnostics, bi-directional control, ECU coding, 15+ service functions, AutoVIN, live data analysis, and vehicle health reports in one portable solution. Go beyond simply reading fault codes. THINKDIAG can communicate with supported vehicle control modules, command components for active testing, perform module adaptations and selected ECU coding functions, and handle common maintenance procedures from your phone. Compatible with 120+ vehicle brands and most OBD-II vehicles from 1996 onward, THINKDIAG gives users workshop-level diagnostic capability without the size and complexity of a traditional scan tablet.

Not sure? Tech support replies in 24h. Ask us

  • Fits-your-car guarantee Listed but wonโ€™t work on your car? Full refund, free return.
  • 30-day returns From delivery. What qualifies
  • 1-year seller warranty Defects handled by our own team.
  • Secure checkout Encrypted Shopify checkout.
  • American Express
  • Apple Pay
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa
  • Bi-Directional Control for Real Active Testing
  • ECU Coding for Module Matching & Vehicle Customization
  • Full-System Diagnostics on 120+ Vehicle Brands
  • 15+ Professional Service & Reset Functions
  • Complete OBD-II Diagnostics from Your Phone
  • Automatic Vehicle Recognition with AutoVIN
  • Compare Four Live Data Streams at Once
  • Generate, Save, Share & Print Vehicle Health Reports
  • Wireless Bluetooth Diagnostics with iOS & Android
  • Diagnostic Feedback for More Confident Troubleshooting
  • 1-Year Free Software Updates
  • Compact Professional Diagnostics for DIYers & Small Shops

Learn more

What vehicles are compatible with THINKDIAG?

THINKDIAG works with most OBD-II vehicles built from 1996 onward and supports 120+ vehicle brands worldwide. Vehicle coverage and available functions may vary depending on the vehicle make, model, year, and system configuration.

Can THINKDIAG perform full-system diagnostics?

Yes. THINKDIAG supports all-system diagnostics for major vehicle systems, including Engine, Transmission, ABS, SRS, BCM, TPMS, SAS, BMS, A/C, and more. It can read and clear fault codes, display live data, access ECU information, perform active tests, and support maintenance functions on compatible vehicles.

Does THINKDIAG support bidirectional control and active tests?

Yes. THINKDIAG features bi-directional control, allowing the scanner to send commands to supported ECUs to activate vehicle components and perform functional tests. This helps technicians verify whether a component or control circuit is working properly and reduce unnecessary part replacements.

Can THINKDIAG perform ECU coding?

THINKDIAG supports ECU coding for selected vehicles and modules. ECU coding availability depends on the vehicle make, model, year, and specific control module. Not all vehicles support ECU coding functions, so please confirm compatibility before use.

What maintenance functions does THINKDIAG support?

THINKDIAG provides 15+ professional maintenance functions, including:
Oil Service Reset
Injector Coding
ABS Brake Bleeding
DPF Regeneration
Throttle Adaptation
Brake Reset
TPMS Reset
SAS Reset
Battery Matching
Immobilizer Matching
Gearbox Matching
AFS Matching
Suspension Matching
ETS Reset
Sunroof Initialization
Available functions may vary by vehicle.

Is THINKDIAG suitable for DIY users or professional mechanics?

THINKDIAG is designed for DIY mechanics, advanced vehicle owners, and small auto repair shops. Its compact design, Bluetooth connection, full-system diagnostics, bidirectional testing, and maintenance functions provide professional-level diagnostic capabilities in a portable scan tool.

How does THINKDIAG connect to my vehicle?

THINKDIAG connects to your vehicle through the OBD-II port and communicates with the ThinkDiag+ App via Bluetooth. Simply install the app, create an account, activate the device, connect it to your vehicle, download the required vehicle software, and begin diagnosis.

Can THINKDIAG generate diagnostic reports?

Yes. With Auto VIN technology, THINKDIAG can automatically identify supported vehicles and generate detailed vehicle health reports after diagnosis. Reports can be saved, shared via email, and printed for repair records or customer communication.

Does THINKDIAG provide software updates?

Yes. THINKDIAG includes 1 year of free software updates to help keep the device updated with the latest supported diagnostic coverage and functions.

Does THINKDIAG support live data monitoring?

Yes. THINKDIAG supports real-time data streaming with graphical displays and data recording. Technicians can monitor vehicle parameters, track performance changes, and analyze abnormal data to improve troubleshooting efficiency.
 View Product Details

Product details

  • 15+Service functions
  • 120+Car make coverage
  • 4Live data streams
  • 10OBD-II diagnostics

Features

Diagnostics

Diagnostics

Shop-Level Full-System Diagnostics in Your Pocket (120+ Brands)ย 

Get a complete view of your vehicle instead of diagnosing only the engineโ€”without the pro-level scan-tablet price tag!ย THINKDIAGย turns any compatible smartphone into a full-system diagnostic tool coveringย Engine, Transmission, ABS, SRS (Airbag), BCM, TPMS, SAS, BMS, A/C, and more acrossย 120+ global vehicle brands:

  • All-System Fault Scanning & Clearing:ย Read and clear DTCs, access ECU module information, monitor real-time data, and investigate faults across multiple systems from one mobile app.
  • Smarter Scans with Less Input (AutoVIN):ย Automatically identifies compatible vehicles and retrieves key vehicle informationโ€”reducing manual-entry mistakes and loading the right diagnostic software faster.
  • Complete Wireless OBD-II Diagnostics:ย Perform essential engine and emissions checks straight from your phoneโ€”ideal for driveway repairs, pre-inspection readiness checks, mobile technicians, and small workshops.

Fault Code Guidance at Your Fingertips โ€” Know What to Check Nextย 

Whether you love wrenching on your own ride or running a busy service bay,ย THINKDIAG's built-in fault-code guidanceย helps you move from a trouble code to a clear repair plan without endless online searching:

  • Clear DTC Explanations & Repair Guidance:ย Translates cryptic fault codes into understandable descriptions, possible causes, and practical troubleshooting tips right inside the app.
  • Faster Root-Cause Decisions:ย Combine fault-code guidance with live sensor data and active tests to pinpoint the exact problem on the first try.
  • Built for DIYers & Technicians:ย Saves time and eliminates guesswork when investigating unfamiliar warning lights.

Visualize Live Data (4-in-1 Graphing) & Printable Health Reportsย 

Get more than just raw numbers, and turn every scan into a clear, professional repair record:

  • Compare Four Live Data Streams at Once:ย View up toย 4 live data graphs side-by-side on one screenย instead of checking parameters one by oneโ€”making abnormal sensor trends easy to spot while the problem is actually happening.
  • Real-Time Data Recording:ย Monitor changing operating conditions in real time and record live sensor data for deeper post-drive analysis.
  • From Diagnostics to Documentation:ย Generate a complete vehicle health report after every scanโ€”save it for future reference, share it via email, or print it to compare before-and-after repair results with customers.
Advanced Functions

Advanced Functions

Two-Way Bi-Directional Control for Real Active Testing โ€” No Blind Disassemblyย 

Withย THINKDIAG'sย bi-directional control, troubleshooting takes a fraction of the time! Send active commands directly from your smartphone to vehicle ECUs and activate components without manually operating physical switches:

  • On-Demand Actuator Activation:ย Run active tests onย windshield wipers, power windows, headlights, radiator fans, fuel injectors, door locks, and other supported actuators in seconds.
  • Separate Actuator vs. Wiring Faults:ย Observe whether the component responds properly to quickly isolate a failed part from a wiring or control circuit problem.
  • Avoid Unnecessary Part Swaps:ย Cut diagnostic guesswork and verify exactly what failed before buying and replacing parts.

Advanced ECU Coding for Module Matching & Vehicle Customizationย 

Take diagnostics further than basic fault-code clearing!ย THINKDIAGย unlocks pro-gradeย ECU Coding and adaptationย on supported vehicles and control modules:

  • Component Matching & Adaptation:ย Match and adapt replacement control modules or actuators to the vehicle after repair.
  • Personalize Comfort & Hidden Features:ย Activate supported hidden functions and adjust selected vehicle settings to match driver preferences.
  • More Control After Repairs:ย Complete advanced electronic setups right from your smartphone instead of sending the vehicle to the dealershipย (availability varies by vehicle make, model, year, and control module).

15+ Professional Service & Reset Functions โ€” Skip Costly Dealership Tripsย 

Streamline essential maintenance, component replacement, calibration, and relearning procedures directly from your phone withย 15+ hot service functions:

  • Routine Maintenance & Brakes:ย Engine Oil Lamp Reset, Brake (EPB) Reset, ABS Bleeding, Battery Matching (BMS), TPMS Reset, and Steering Angle (SAS) Reset.
  • Engine, Fuel & Drivetrain:ย Injector Coding, DPF Regeneration, Throttle Adaptation / ETS Reset, and Gearbox Matching.
  • Security, Lighting & Chassis:ย Immobilizer (IMMO) Matching, Adaptive Front Lighting (AFS) Matching, Suspension Matching, and Sunroof Initialization.
Protocols & Access

Protocols & Access

Complete Access to Over 120 Global Manufacturers (1996โ€“Now)ย 

Perform comprehensive scans to get to the bottom of any issue across your entire garage or customer fleet!ย THINKDIAGย supportsย 120+ vehicle brandsย and most OBD-II vehicles from 1996 onward:

  • U.S., European & Asian Coverage:ย Broad multi-brand compatibility across domestic and imported cars, SUVs, and light trucks.
  • Universal OBD-II Standards:ย Supports essential OBD-II communication protocols for reliable engine, powertrain, and emissions diagnostics.
  • One Pocket Tool for Every Job:ย Eliminates the need to switch between multiple brand-specific readers for everyday troubleshooting and maintenance.
Hardware & Software

Hardware & Software

Pocket-Sized Wireless Bluetooth Dongle + Diagnostic Feedback Supportย 

Professional diagnostic capability does not have to mean carrying a large, heavy scan tablet! Plugย THINKDIAGย into the vehicle's OBD-II port, pair via Bluetooth, and diagnose wirelessly from your smartphone:

  • Compact Power for DIYers & Small Shops:ย Packs full-system scanning, active tests, ECU coding, 15+ resets, AutoVIN, fault-code guidance, and 4-in-1 graphing into a compact dongle (3.15 ร— 1.57 ร— 4.72 in).
  • iOS & Android Mobile Platform:ย Connects seamlessly through theย ThinkDiag appย on compatible mobile devices runningย Android 6.0 or later / iOS 13 or laterโ€”freeing you from tangled cables in the driver's seat.
  • Diagnostic Feedback for Tough Faults:ย When a fault is difficult to identify, submit diagnostic logs directly through the built-inย Diagnostic Feedbackย function for expert technical analysis so you never get stuck on an unfamiliar repair.

Specifications

Specifications

Hardware

Model THINKDIAG

Product type Bluetooth OBD2 diagnostic adapter

Power source Corded electric

Screen size 5 in

Dimensions 3.15 in L ร— 1.57 in W ร— 4.72 in H

Item weight 0.15 g

System

OS requirement Android 6.0 or later / iOS 13 or later

Updates & Access

Updates & Access

1-Year Free Software Updates โ€” Keep Coverage Current Through the Included Update Yearย 

Unlock pro-level diagnostic, active test, and coding capabilities right out of the boxโ€”a single use pays for itself!ย THINKDIAGย includesย 1 year of free software updatesย to keep your diagnostic coverage and functions current:

  • 12 Months of Included Updates:ย During the included update period, you can get supported software improvements and vehicle coverage updates at no extra cost.
  • Growing Diagnostic Database:ย Regular updates help your scanner stay useful and current as the diagnostic database and vehicle support continue to grow.

Note:ย Available diagnostic systems, bi-directional active tests, ECU coding, AutoVIN, fault-code guidance, and 15+ service functions vary by vehicle make, model, year, and control module. Requires a compatible device running Android 6.0 or later / iOS 13 or later.

In the Box

In the Box

  • Thinkdiag×1
  • User Manual×1
๏ปฟ
You might like