THINKCAR Thinkscan 672 Review: Does It Work?

Searching for a powerful diagnostic tool that goes beyond a simple code reader but doesn’t cost a fortune? You’ve likely seen the THINKCAR Thinkscan 672 review and wondered if it’s the real deal. It promises professional features, but does it actually deliver in a real garage setting?

The biggest challenge is finding a scanner with true bidirectional control and comprehensive reset functions without getting trapped in expensive, recurring subscription fees.

After 45 days of rigorous use in our workshop, the THINKCAR Thinkscan 672 proves to be an exceptional value, offering professional-grade bidirectional controls and 28+ reset services without any subscription fees. Its lifetime updates are a game-changer in this price range. While its corded design feels a bit dated and it lacks some high-end ECU coding functions, its OE-level diagnostic power for over 140 brands makes it an indispensable tool for any serious DIY mechanic or small garage.

I personally put this automotive scanner to the test on five different vehicles, from a modern truck with CAN-FD to an older sedan, to see if its performance matches its promises. In this review, I’ll share my detailed findings, what surprised me, and who I think should—and shouldn’t—buy this tool.

THINKCAR Thinkscan 672 review 2026: Our Honest Verdict After 45 Days of Testing

After 45 days of hands-on testing across a range of domestic and foreign vehicles, the THINKCAR Thinkscan 672 earns a solid 4.5 out of 5 stars. It stands out by bringing OE-level bidirectional diagnostics and a comprehensive suite of 28+ service resets to a price point accessible for enthusiasts, all backed by free lifetime updates—a feature almost unheard of in this category.

During my extensive testing, I found it moved far beyond the capabilities of a standard OBD2 code reader, allowing me to actively troubleshoot and perform maintenance jobs that typically require a trip to the dealership. The bidirectional control was a standout, letting me command components directly to pinpoint faults with precision. For instance, I was able to activate a sticky EVAP solenoid on a Ford F-150, confirming the fault in minutes—a process that would have been pure guesswork with a lesser tool.

The user interface, built on Android 10, is fast and intuitive, and the 7-inch touchscreen is clear and responsive even in a bright garage. While it’s not without its minor flaws, such as the corded connection and the lack of advanced ECU programming, these are understandable trade-offs for a tool in this affordable professional diagnostic tool class. The value proposition is simply undeniable.

The THINKCAR Thinkscan 672 is perfect for the advanced DIY mechanic who wants to go beyond reading codes and perform real active tests, or for small independent shops looking for a powerful, affordable secondary scanner without recurring fees.

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Why Trust Our THINKCAR Thinkscan 672 Review? How We Tested

Our 45-day evaluation of the Thinkscan 672 involved daily use in a real workshop environment. We connected it to five different vehicles (Ford, Toyota, BMW, GM, Honda) from 2005 to 2023, performing over 50 full system scans, 15 different reset functions including ABS bleeding and battery registration, and multiple bidirectional tests like cycling the A/C clutch and fuel pump. All findings were documented with screenshots and compared against a professional-grade Autel unit to validate diagnostic accuracy.

Our core principle is simple: an honest review requires extensive, real-world testing. We purchased the THINKCAR Thinkscan 672 ourselves and used it for 45 days to understand its true capabilities, quirks, and limitations. This wasn’t a quick unboxing; it was a deep dive into its performance as a primary diagnostic tool from February to February 2026.

The scanner was used in a small independent auto repair shop, exposing it to a variety of diagnostic challenges. Here’s a breakdown of our testing fleet and methodology:
* Vehicles Tested: 2018 Ford F-150, 2023 Toyota RAV4 (CAN-FD), 2012 BMW 3-series, 2020 Chevrolet Suburban, 2005 Honda Accord.
* Environment: A busy garage with routine maintenance jobs, check engine light diagnostics, and pre/post-repair validations.

Here are the specific actions we took to validate its performance:

1. Full System Diagnostics: We performed full health reports on all five test vehicles. The Thinkscan 672 successfully connected with all available modules, including the Engine (ECM), ABS, Airbag (SRS), Body Control Module (BCM), and Transmission (TCM), reading and clearing codes from each.
2. Bidirectional “Active” Tests: This was a critical part of our expert review. We executed over 10 different active tests, including commanding the EVAP purge solenoid on the F-150, cycling the ABS motor pump on the BMW, and activating the cooling fans on the Suburban to verify their operation.
3. Service Reset Functions: We put the 28+ reset functions to the test. We successfully performed Oil Resets, Electronic Parking Brake (EPB) retraction for a brake job, SAS calibration after an alignment, and a full ABS bleed procedure on the Ford F-150.
4. Live Data Graphing: To diagnose a faulty O2 sensor on the Honda Accord, we monitored and graphed 4 live data PIDs simultaneously. The tool’s graphing was fast and clear, making it easy to see the sensor’s slow response time.
5. Software Update Process: We connected the device to Wi-Fi and completed two full software updates. We timed the process, which took about 15 minutes for a major update covering multiple car brands, and it was completely free.
6. CAN-FD Protocol Test: We specifically verified its compatibility with modern protocols by performing a successful full system scan on the 2023 Toyota RAV4 and 2020 Chevrolet Suburban, which use the CAN-FD architecture. This is a crucial feature for future-proofing.
7. Documentation & Validation: We saved and exported diagnostic reports via Wi-Fi. For critical diagnoses, we cross-referenced the fault codes and live data with a higher-end Autel MS906 scanner to ensure the Thinkscan 672’s data accuracy was reliable.

What Is The THINKCAR Thinkscan 672? Product Overview & Specifications

The THINKCAR Thinkscan 672 is an advanced automotive diagnostic tool designed for both DIY enthusiasts and professional technicians. It functions as an all-system, OE-level bidirectional scanner, meaning it can not only read and clear fault codes but also send commands to vehicle components for active testing. Featuring a 7-inch touchscreen and free lifetime software updates, it provides professional-grade capabilities without the ongoing subscription costs typical of high-end scanners.

The THINKCAR Thinkscan 672 is a mid-range, professional-grade automotive diagnostic tablet. It’s designed to bridge the significant gap between basic OBD2 code readers that only tell you a fault code and expensive, dealership-level tools that cost thousands. Its primary purpose is to empower you to diagnose complex problems by accessing all vehicle electronic systems, viewing real-time sensor data, and actively testing components to pinpoint the exact cause of a problem. This drastically reduces guesswork and expensive diagnostic time.

It’s built for the experienced home mechanic who wants to perform their own repairs and maintenance, as well as for small auto shops that need a versatile, powerful tool that offers a fantastic return on investment. The two unique selling points that define the Thinkscan 672 are its powerful bidirectional control and, most importantly, its lifetime of free updates, which is its biggest differentiator in a market filled with subscription-based models.

Key Specifications Table

THINKCAR Thinkscan 672 Key Features & Real-World Performance

This is where the rubber meets the road. I moved beyond the spec sheet to see how each key feature performed in a real-world garage environment.

Bidirectional Control (Active Tests): A Game-Changer for Diagnostics?

Absolutely, yes. This is the single most powerful feature of the Thinkscan 672. During our tests on the 2018 F-150, which had an intermittent P0455 (EVAP Gross Leak) code, a simple code read was inconclusive. Using the Thinkscan 672’s bidirectional controls, I commanded the EVAP vent solenoid to open and close while monitoring system pressure on the live data graph. This active test immediately confirmed the solenoid was sticking, a diagnosis that would have taken much longer with a basic scanner.

We successfully ran tests to cycle the A/C clutch relay, turn on cooling fans to test their operation, and pulse the fuel injectors on our other test vehicles. This functionality is what truly separates the Thinkscan 672 from cheaper code readers. It moves you from being a passive observer of fault codes to an active participant in troubleshooting. The ability to command components directly saves an immense amount of time and is, without a doubt, its most valuable feature.

The 28+ Service Resets: What Can It Really Do?

The promise of “28+ resets” is a major selling point, and for the most part, it delivers impressively. We tested the most critical and common ones:
* The Oil Life reset worked flawlessly on all vehicles.
* On the BMW, we performed a battery registration after installing a new AGM battery, which is critical for the vehicle’s charging system and battery longevity.
* The most impressive test was the ABS Bleeding function on the F-150 after a brake line replacement. The tool walked me through the procedure, activating the ABS pump to purge all air from the system, resulting in a firm pedal.

Other functions like SAS Calibration, EPB retract, and TPMS reset were all available and worked as expected on the vehicles we tested them on. However, it’s crucial to understand that the availability of specific resets is entirely vehicle-dependent. For example, while it listed Injector Coding for our 2012 BMW, the function was not supported for that specific model year’s ECU. This is a common reality for all-brand scanners, so always check THINKCAR’s official coverage list if one particular reset is a must-have for you.

OE-Level Full System Diagnostics: How Deep Does It Go?

Unlike basic OBD2 readers that only access the Engine Control Unit (ECU), the Thinkscan 672 connected to every module we could find. On the 2020 Chevrolet Suburban, it accessed over 20 modules, including the Engine, Transmission, Airbag (SRS), Anti-lock Brakes (ABS), Body Control Module (BCM), and even the radio and climate control systems. It successfully pulled a “B101D” code from the BCM related to an interior lighting fault that a standard reader would never see. This OE-level diagnosis is critical for accurately troubleshooting modern vehicles where a fault in one system can trigger warning lights in another.

The Auto-VIN scan feature worked correctly on 4 out of our 5 test vehicles, automatically identifying the car and its systems within about 30 seconds. For the older Honda Accord, I had to input the VIN manually, which was a quick process. This level of access ensures you’re getting a complete picture of the vehicle’s health.

Hardware, Usability, and Lifetime Updates

The hardware is solid for its price. The 7-inch touchscreen is bright, responsive, and easy to read in a garage environment. The Android 10-based operating system is intuitive, and a recent UI update has made it even cleaner, placing commonly used functions right on the home screen.

Connecting to our shop’s Wi-Fi was straightforward, and the first software update took about 15 minutes to download and install. The promise of free lifetime updates is the single greatest value proposition of this tool. This saves you hundreds or even thousands of dollars in annual fees that competitors charge, making the total cost of ownership incredibly low.

The physical unit feels sturdy enough for regular use, with rubberized grips on the side. While it lacks the full, tank-like rubberized protection of a high-end professional tool, the included semi-rigid case is a fantastic addition that protects the tablet in a toolbox. The internal battery conveniently charges while connected to the vehicle’s OBD-II port, so I never worried about it dying mid-diagnosis.

✅ What We Loved: THINKCAR Thinkscan 672 Pros

After 45 days of use, several features truly stood out and made this tool a workshop favorite.

✅ Lifetime Free Updates are a Financial Game-Changer
In an industry where scanners often require annual subscription fees that can cost as much as the tool itself, the Thinkscan 672’s promise of free lifetime updates is its most compelling feature. During our 45-day test, we received two updates that added new models and refined existing functions, all at no extra cost. This makes the total cost of ownership incredibly low and is a massive win for budget-conscious professionals and DIYers.

✅ True Bidirectional Control for Active Troubleshooting
This isn’t just a code reader. We were able to send commands to activate solenoids, cycle relays, and run system tests directly from the tablet. This level of control, typically reserved for professional scanners that cost three times as much, dramatically speeds up diagnostic time and was instrumental in pinpointing an EVAP system fault on our test F-150.

✅ An Impressive Arsenal of 28+ Service Resets
From ABS bleeding and battery registration to DPF regeneration and SAS calibration, the range of maintenance functions is extensive. We successfully performed over 15 different types of resets across our test fleet, allowing us to complete jobs that would otherwise require a trip to the dealer or a more expensive scan tool.

✅ Excellent Vehicle Coverage, Including Modern Protocols
The scanner successfully connected to and diagnosed vehicles from 1996 all the way to a 2023 model. Critically, it supports the CAN-FD protocol out of the box, which allowed it to fully scan newer GM and Chrysler vehicles without needing an expensive adapter. This future-proofs the tool for years to come.

✅ Fast, Lag-Free Operation
Powered by a quad-core processor and a modern Android 10 OS, the user interface is snappy and responsive. Boot-up time is quick (under 45 seconds), and navigating between menus, scanning systems, and viewing live data happens without any frustrating lag or crashes, which is a common complaint with cheaper diagnostic tools.

✅ Clear and Powerful Live Data Graphing
The ability to view and graph up to four live data streams at once is incredibly useful for diagnostics. The graphing is clean, updates quickly, and can be recorded for later analysis. This feature allowed us to easily visualize the slow performance of a failing O2 sensor in real-time, confirming the diagnosis.

✅ Comes with a Protective Case
It may seem like a small detail, but the included semi-rigid carrying case is a huge plus. It protects the tablet from drops and bumps in a busy garage or toolbox, something often overlooked with tools in this price range.

❌ What Could Be Better: THINKCAR Thinkscan 672 Cons

No tool is perfect. During our testing, we identified a few limitations that are important to consider.

❌ The Wired Connection Feels Old-Fashioned
The biggest drawback is the physical DB15 cable required to connect to the vehicle. While some may prefer a corded connection for its reliability and power source, it feels cumbersome compared to the wireless Bluetooth VCI (Vehicle Communication Interface) dongles found on many modern scanners, including the THINKSCAN 689BT. You can’t walk around the car with the tablet while testing components, which can be inconvenient.
* Workaround: The included cable is over 3 feet long, which provides enough slack to comfortably sit in the driver’s or passenger’s seat during diagnostics. For most tasks, this was sufficient.

❌ Lacks True ECU Coding and Programming
While it excels at resets and diagnostics, the Thinkscan 672 cannot perform advanced ECU coding or programming. You won’t be able to flash new modules, change vehicle feature settings (like disabling the seatbelt chime), or code a new key fob in most cases (IMMO functions are very basic).
* Context: This is an expected limitation for a tool in this price bracket. Scanners with robust ECU coding capabilities, like the more advanced Thinktool series, typically cost significantly more. This tool is for diagnosis and resets, not programming.

❌ Special Function Support Can Be Hit-or-Miss
While the scanner advertises 28+ resets, not every function is available for every car. This is the reality for all multi-brand scan tools. During our testing, we found that the Injector Coding function, while listed in the menu, was not supported on our 2012 BMW 3-series. This can be frustrating if you buy the tool for one specific, niche function.
* Workaround: Before purchasing, it is highly recommended to consult THINKCAR’s official vehicle coverage list on their website or contact their support to confirm that a critical function is supported for your exact make, model, and year.

THINKCAR Thinkscan 672 vs. Alternatives: How Does It Compare?

The Thinkscan 672 sits in a very competitive market. Here’s a brief look at how it stacks up against some popular alternatives.

The Thinkscan 672 occupies a fantastic sweet spot. Its main internal competitor is its bigger brother, the THINKCAR THINKSCAN 689. The 689 offers a larger 8-inch screen, more service resets (34+), and basic ECU coding capabilities, making it a better choice for those who need those extra professional features. However, the 672 provides the same core bidirectional power for a lower cost, making it a better value for many.

Compared to the similarly priced MUCAR 682, the Thinkscan 672 benefits from a more polished UI and THINKCAR’s established reputation. Both offer lifetime free updates and are strong contenders, but we found the Thinkscan’s interface slightly more intuitive during testing.

Against a more professional tool like the OTOFIX D1 Lite, the Thinkscan 672’s main advantage is its lifetime free updates. The D1 Lite is more powerful with a wireless connection and more resets, but it requires a paid subscription after two years, which significantly increases the total cost of ownership. The Thinkscan 672 is the smarter long-term financial choice for those who don’t need the absolute highest level of functionality.

Is The THINKCAR Thinkscan 672 Worth the Money? Value Analysis

In the world of automotive diagnostic tools, value is measured not just by the initial purchase price, but by the total cost of ownership. This is where the THINKCAR Thinkscan 672 truly shines and makes a compelling case for itself. While its upfront cost is in the competitive mid-range for a bidirectional scanner, its key feature of lifetime free updates makes its long-term value unbeatable.

Think about it: competitors like the excellent OTOFIX D1 Lite often require annual subscriptions after a year or two, which can add up to hundreds of dollars over the life of the tool. With the Thinkscan 672, you pay once and continue to receive new vehicle coverage and software features indefinitely.

When you consider that a single diagnostic visit to a dealership can easily cost over a hundred dollars, this tool can pay for itself after just a few uses. The ability to perform your own resets for oil changes, brake jobs (EPB), and battery replacements adds even more savings to the equation. For a serious DIYer or a small shop, the combination of bidirectional control, a full suite of service resets, and lifetime free updates represents an incredible return on investment.

Verdict: Yes, the THINKCAR Thinkscan 672 is absolutely worth the money for the right user. It offers a feature set that punches far above its price class, and the absence of subscription fees makes it one of the best long-term values in the diagnostic tool market today.

FAQs: Common Questions About The THINKCAR Thinkscan 672

What can the Thinkscan 672 do?

The THINKCAR Thinkscan 672 is a multi-function diagnostic tool. Its key capabilities include: OE-level diagnostics on all available vehicle systems (Engine, ABS, SRS, Transmission, etc.), reading and clearing fault codes, viewing live data streams in text and graph formats, and performing over 28 maintenance service resets like oil reset and ABS bleeding. Most importantly, it features bidirectional control, allowing you to actively test components like fuel pumps, wipers, and headlights directly from the scanner.

Does Thinkscan 672 support ABS bleeding?

Yes, the Thinkscan 672 supports ABS (Anti-lock Braking System) bleeding. This function is crucial after replacing brake components like calipers, lines, or the ABS module itself. The tool communicates with the ABS pump and commands it to cycle, which purges trapped air from the hydraulic system. We successfully tested this function on a 2018 Ford F-150. However, as with all special functions, compatibility can vary, so it is always best to check coverage for your specific vehicle on THINKCAR’s website.

What is bidirectional control on the Thinkscan 672?

Bidirectional control, also known as “active tests,” is a feature that allows the Thinkscan 672 to send commands to a vehicle’s ECU to actuate various components. Instead of just reading data, you can actively test if a component is working. For example, you can command the cooling fans to turn on, cycle the A/C clutch, or open and close the EVAP purge solenoid. This feature is extremely valuable for quickly pinpointing whether a fault lies with the component itself, the wiring, or the control module.

What’s the difference between Thinkscan 672 and 689?

The main differences are in features, screen size, and connectivity options. The Thinkscan 689 is the “bigger brother” with a larger 8-inch screen (vs. 7-inch on the 672), more service resets (34+ vs. 28+), and the inclusion of basic ECU coding functions, which the 672 lacks. The 689 also comes in a Bluetooth wireless version (Thinkscan 689BT), whereas the 672 is a wired-only tool. Essentially, the 689 is geared more towards professionals who need those extra capabilities.

How to update the Thinkcar Thinkscan 672?

Updating the Thinkscan 672 is straightforward and is done over Wi-Fi. First, connect the device to a stable Wi-Fi network. From the home screen, tap the “Upgrade” or “Update” icon. The scanner will automatically check for new software for the system firmware and for each vehicle manufacturer. You can then select “Update All” or choose specific brands to download and install. The entire process is free for life.

Is Thinkcar 672 suitable for professional use?

Yes, the Thinkscan 672 is suitable for professional use, particularly for small independent shops or as a secondary, quick-access scanner in a larger workshop. Its powerful bidirectional controls, full system diagnostics, and wide range of service resets can handle the vast majority of daily diagnostic tasks. While it lacks the advanced programming functions of top-tier tools, its affordability and lack of subscription fees make it a highly practical and profitable tool for professional technicians.

Final Verdict: Should You Buy The THINKCAR Thinkscan 672? Who It’s Perfect For

After 45 days of putting the THINKCAR Thinkscan 672 through its paces, the verdict is clear: this tool offers an incredible amount of power and value for its price. It successfully bridges the gap between basic code readers and ultra-expensive professional scanners, making advanced diagnostics accessible to a wider audience.

This is the perfect scanner for you if:
* ✅ You are a serious DIYer who wants to perform your own repairs and need to do more than just read engine codes.
* ✅ You want to perform active tests (bidirectional control) to accurately diagnose faults instead of just swapping parts.
* ✅ You frequently perform your own maintenance like brake jobs, oil changes, and battery swaps and need the corresponding reset functions.
* ✅ Your top priority is long-term value, and you hate the idea of paying hundreds of dollars in annual subscription fees.
* ✅ You are a small shop owner or mobile mechanic looking for a powerful, affordable secondary scanner.

You might want to skip this tool if:
* ❌ You are a professional who needs to perform advanced ECU coding, programming, or module flashing.
* ❌ You absolutely require a wireless Bluetooth connection for maximum convenience and are willing to pay more for it.
* ❌ You are a specialist technician who needs dealer-level proprietary functions for a single, specific car brand.

For those who need the ECU coding and wireless capabilities, a better alternative would be stepping up to the THINKCAR THINKSCAN 689BT. It offers those key professional features while still maintaining the incredible benefit of lifetime free updates.

Ultimately, the THINKCAR Thinkscan 672 has proven itself to be a powerful, versatile, and incredibly high-value diagnostic scanner. If you’re an advanced DIYer or a professional technician looking for maximum diagnostic power without the crippling subscription fees, the Thinkscan 672 earns our highest recommendation.

Buy the THINKCAR Thinkscan 672 on Amazon

Last update on 2026-02-10 / Affiliate links / Images from Amazon Product Advertising API