TOPDON ONE Bidirectional Scan Tool, 10.1" OBD2 Scanner with J2534 Pass-Thru

To anyone that needs a true opinion of a scanner that can pretty much do it all without breaking the bank, look no further. I am a technician day to day and have been using it for about a month on my personal vehicles. Ford Maverick and BMW x5. The build quality and interface is beautiful. Very well built with a long lasting battery. What I loved the most was the interface at how everything was very easy to find especially with the Topology view. Something you only see at dealerships. This is a life saver to see the modules disconnected or communication on which line. Very similar to dealership software especially if you've used BMW software you'll know what I mean.I've used it on my Maverick and found out that my back up cam module was down but had a TSB from Ford notifying me of a recall. Saved me honestly on time and diagnostic. Next was my BMW x5 that I had used the TopDon One to help me change my transmission fluid, transfer case and battery. The instructions that prompts you are literally the same as BMW software allowing you to open and close the valves to drain fluid and reset adaptations which is a must. I also swapped out and coded my new battery which I was able to input the capacity and amperage. Overall, Ive been using it for about a month now and absolutely love the features of it being a bi directional tool with the option to program and code vehicles. Please keep it mind that on certain vehicles, you will need to purchase the token for a specific manufacturer but that is standard. Under Rights Inquiry you can see rights for OBFCM or NASTF. You can register your account and shop info with the capabilities to email you or the customer the whole vehicle report with pictures and data of your findings. It has a browser built in to do any searching on the web. A Lot of people may have mixed reviews of this scanner compared to others and that's their opinion as well as mine. The level of uses this has compared to Dealership is very close. I'm very impressed . Topdon customer support has been A1 with new releases. Since I've had it, I've probably updated it at least 15 times due to the scanner being so new. This is a good thing as it's constantly being updated. Any issues you can literally upload the logs to their support Team. The scanner is a powerful tool and not many realize the uses for active tests or bi directional especially with newer vehicles/ EV. The dongle and scanner can both be updated to the latest firmware and protocols but if you're not used to this level of OE capabilities, I'd try a different scanner from Topdon. Yes, it's that powerful. For the price, you're not going to find a scanner with this level of features for this price without going to the dealership or paying over $2k for those scanners and licenses. I can justify paying for a token on my own vehicle and it'll still be cheaper than taking it to the dealership. The AI assist is ok only because I don't really use AI to diagnose a car. Rather look at the data and freeze frames. I have yet to check the " Coding" feature with my vehicle as yet but once I test it and try it out I'll give a 2 month update.

I've been using the Topdon One for a week now to test as many of its functions as possible. I work in a large shop, so there are many different car models and years. Firstly, when I received the Topdon One, I was impressed by the quality and the feeling of sturdiness when you hold it. It opens very quickly, and registering the device with Topdon is simple and fast. The advanced topology is superb in terms of usability. It doesn't just show CAN on pins 6 and 14, but also identifies other networks. A report is generated after scanning all the modules and is easy to print, or you can send it via Bluetooth, which is very convenient. The device is very fast, and the graphical mode is very useful. You can display up to 12 different parameters at the same time. You can also combine four graphs, which is perfect for checking ABS problems. There are also 50 maintenance schedules accessible via a very user-friendly menu. In addition, it also comes with a J2534, which provides access to manufacturer programming. I sincerely believe that for the price, there are no comparable options. It was a very good first impression.

This tool is absolutely amazing!! It’s very fast and the topography is so helpful. There’s direct links from the trouble codes to search their meaning and give you a variety of very helpful information. The unit is very well constructed with an excellent screen for watching training videos or whatever you want to look up. The graphics on the live data are out of this world!! I’m shocked by how low the price is for all the capabilities you get, this rivals tools twice the cost and it wins! The AI assistant features keeps getting more powerful with updates. It connects to vehicles quickly and the VCI allows for actual programming not just coding. I couldn’t be more happy with the purchase. I have a Snapon Zeus I haven’t used since I got this Topdon ONE and the Zeus was 10 grand. Don’t bother looking further this is the Best Buy out there for advanced capabilities period!

I have used many different scan tools and own quite a few. The Topdon ONE has become my go-to scan tool in the shop. When you get the tool it will come in a very high quality hard case. I love that the tool comes with an obd2 extension cable. I like running it allowing the obd dongle to hang down so its harder to miss and leave in a car. The hardware is excellent quality just as I expect from Topdon. the screen is large and bright. The edges of the tablet have rubber bumpers making it rugged enough for shop use. Topology has become one of my favorite scan tool features and Topdon's Topology screen is great. Knowing what modules are talking and what ones are not communicating is a great feature. The system scan feature is fast. I like being able to run a report and then email the report to myself with all the vehicle data and codes. Bidirecitonal control works well. This tool will rival many other tools as far as functionality for a fraction of the price. I did have a couple small glitches when I first got it but nothing major and within a day, an update had come out that took care of the issue. Data speeds are fast and give a quality data set. The scan tool having J2534 capabilites is a huge advantage as programming has become a nessecary in today's automotive repair shops. Topdon has knocked it out of the park with this tool. It has features typically found in much more expensive tools for a DIY budget. It doesnt matter if you just want to work on your personal vehicles or you do diagnostics daily in a shop setting, you will find the Topdon ONE a must have tool.

Coming from a Phoenix Plus, it's a nice, comparable, well built unit. The renewal cost is $299/year, cheaper than the Phoenix Plus, more service functions, and the AI assistant is a nice touch. That will help many diy guys do actual diagnosis vs the old parts cannon strategy. Tsb are a nice, but janky inclusion. And as much as it annoys the parts store employees, remember, codes are not part numbers. It's a direction to go in. Test, don't guess. I knocked off 1 star for 1 petty reason: it read my 2013 f150 vin, but couldn't decode it, so I had to go el' manual style. It's a brand new platform, and I did report the bug to Topdon. They are pretty good at getting updates out. FWIW, you may find other, more, shall we say, popular manufacturers on here. Know this: they are NOT supported by the manufacturers, (I've emailed several to ask specifically about that) and if you need AutoAuth, good luck. Topdon doesn't play that game, though. You buy on Amazon, it's the same manufacturers warranty and service. Autoauth works. If you want a Launch or Autel, I recommend AES wave, or any USA distributor, not on here.

I have used several professional scan tools, and the TOPDON ONE has quickly become my new go-to scanner. One of its best features is the quality of the reports it generates. The reports include enhanced manufacturer DTCs along with useful generic OBD-II information such as emissions-related faults and I/M readiness status. Not many scanners combine all of this data into one report. For professional documentation and CYA purposes, having that information attached to the fault report is extremely valuable. Sending reports directly from the scanner is seamless, quick, and easier than with any of my other scan tools. Most of the diagnostic reports I have saved and shared over the past several months have come from this TOPDON. The system scan topology also works on nearly every vehicle I have tested. I have only seen a couple of older, 20-plus-year-old Mercedes-Benz vehicles that did not display it. The tool is continuously updated with new features and improvements. It also has an excellent selection of service resets and maintenance functions. The wireless VCI is packed with features and supports both Bluetooth and Wi-Fi. Bluetooth connects faster and works well for everyday diagnostics, while Wi-Fi is better suited for programming and coding. The VCI supports modern communication protocols, including high-speed CAN, CAN FD, and DoIP. It can also function as a J2534 pass-thru interface for use with compatible OEM software and module programming. Overall, this tool offers excellent reporting, broad vehicle coverage, strong topology support, frequent updates, and a very capable VCI. For the price, it provides an impressive amount of professional-level capability and has become the scanner I reach for first.

If you’re a do it yourself kind of person then this scanner is a must. Everything you need to troubleshoot and diagnose your vehicle CEL is on this tool. This scanner has a bunch of different features that you probably will never use but it’s there which is a good thing. Been using this scanner for about 2 months now working on my personal vehicles and doing jobs on the side for friends and clients. So far, I’ve no issues with it. It does exactly what it’s made to do. My favorite feature about this scanner is the Topology Mapping. It’s amazing how much it shows and tells you about each module in the car and where the fault is. Can’t forget about the autovin which is a time saver. The smaller scan tools I have don’t auto detect vins and it’s dreadful to type in manually lol. The bidirectional feature on this scanner is a life saver at testing individual modules. I would say that this is the only reason I got this tool. If used correctly it’ll save you a lot of time and help tremendously with diagnosing issues. Not to mention the AI Assistant feature, something I rarely used just because I like to figure things out on my own, but it’s there to make the job easier. Overall, so far I’ve had no issues with this scanner. It’s well built and the interface is user friendly. It comes in a nice case with accessories. I’m happy with this scanner and will provide an update if any issues arises. So far it’s well worth it.

Excellent Scanner, for professionals and for DIYers too, easy yo use, accurate description, it updates almost every week to stay up to date with the latest advances on vehicles, compatible with all my cars old and new, the case is heavy duty for easy portability and protection. I recommend it specially for the price its going for! It does everything my expensive 2000+ USD scanners.

I thought this would be better than my cheap one from Canadian tire. It isn’t at all. It’s completely useless if you have a ford. Save ur $$

I used it on my personal car,(vw passat B8 -2021.) it has great functions, resets systems, I am satisfied.

Spelling mistakes all over the software. Engine performance monitor only shows 5 of the 6 cylinders on my 6.7l Dodge Ram. Built in browser crashes whenever I select the TopDon store.

This scan tool can't even open the service manual on the browser, it constantly crashes. Contacted Top don support, no help. All of the suggestions they've recommended don't work and they just stopped replying.

Useless not as described No diagnostic capability