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Five stars all the way. I’m a small business owner: This is the first scanner I have ever owned. In the past three weeks: Mercades ABS light was on. Mercades told me I needed all four ABS sensors replaced. I decided to purchase the Youcanic scanner. Result, I only one sensor was bad (I replaced it). On my first repair, Youcanic saved me $2,700.00. I also figured out that I had a bad clock spring in two other vehicles (easy to change) and a bad ABS sensor in another. Cold weather would not allow a service truck to start. With a little research, the Youcanic scanner shower me what was the problem (fixed). Best purchased I ever made.
The bi-directional communication is really the greatest thing to have when using a scanner. This scanner is very easy to use. Well thought out controls. Very durable.
The only thing I would like is, when using “Live Data” split the screen so that more data can be viewed at one time. Oh, the battery drains fairly quickly (couple of hours of use) although, I don’t have another brand scanner to compare it to, this could be normal. Only recognized VIN on 2 of 5 vehicles. I had to type in the VIN then the information popped up. Not a big problem.
Customer service was fantastic. The scope switch wasn’t mounted properly. Youcanic sent a new camera. It arrived in a couple of days.
Thanks Youcanic for a great product and great customer service. You folks should be very proud of your product. Good Job.

First, I decided to buy this product because of the professional reviews I read. I used the Youcanic on a 2004 S430, as it was having issues with "Airmatic Visit Workshop." YouTube was leaning towards replacing the Air Valve Block, however the Youcanic identified B22/9 Right Level Sensor. After a closer inspection, the component did need to be replaced and the issue was resolved. I have 2015 Audi, 2016 Silverado and 1999 Mustang, so this has been and will be money WELL spent. Got it, Get it, you will Love it.

I rented the scanner to troubleshoot my 2012 Mercedes GL550, no start problem. I was skeptical until I tried it. I was able view the real-time data as I turned to key in the ISM, which showed me that the ISM was not sending the signal to the start relay to allow it to start. I was able to repair the ISM, that had a broken connector and was able to see the signal from the ISM to the relay. The car still wouldn't start, so I went further, and found that the starter was also bad. I was very pleased to save a bunch of money, even with the rental fee,taken into consideration.
The only thing I had an issue with was the fact that the scanner wasn't able to test the starter, which I had to remove and het tested. I liked it so much that I bought one, with no hesitation. Even woth the purchase price plus the rental fee, it was much cheaper than letting the Dealer/Stealer fix the problems. Lol

The YOUCANIC UCAN-II-B PRO Full System Scanner is an awesome tool. It paid for itself on my first use. We have 5 cars from 1997 to 2021 and it works with all of them. On my GMC Sierra Denali, I was having issues with Stabilitrak and once I plugged this in, it was obvious that I had a grounding issue. I did not have to spend hours on it as we started with the battery and found that a ground had become loose. Way cheaper than the dealership.

Had an issue with my Dynamic Multicontour seats in my S600. The scanner identified the issue and with the ability to reset error codes and then provocating the error over and over i was finally able to locate the root cause: a broken air-pipe in the driver seat. Was able to fix this myself. Love the scanner. Robust and easy to use.

I highly recommend this to the home mechanic. I had a few issues to sort out on my 08 volvo and this was the way to finish out my work.
I set the transmission to learn, recalibrate the ac system, sorted out my haldex AWD, got rid of my airbag warning, and cleared up a traction control issue.
Plus cleared out old codes from over the years.
It's easy to use and was in new condition.
The company is easy to work with also.

The whole process went very smoothly from beginning to end. Before renting I asked if the tool could do what I needed to and tech support confirmed it could. Renting was straightforward and the tool was easy enough to use. Did not need to schedule a remote tech support session. Once I was done with the tool I emailed them asking for a return label which was they promptly emailed me. Got my refund when they received their tool back. 10 out of 10 would rent from them again.

An affordable. fully-interactive diagnostic scanner was just a passing dream of mine until I purchased the UCAN-II. The day it arrived I updated the software and immediately afterward used it to diagnose. solve and reset ABS issues on a 2014 Volvo S60. I then diagnosed and solved vexing and persistent coolant sensor problems on a 2014 Mini. Didn't have to find a local repair shop or drive long-distance to a dealer, book and wait for an appointment, take time off work, drive to the shop, nor pay a diagnostic fee and hope for an honest diagnosis and quick turn around. That afternoon my UCAN-II paid for itself in no lost wages, no diagnostic fees and no run around. With the UCAN-II I discovered the actual problems, researched the repair procedures from the UCAN-II browser, ordered new parts, made and verified the repairs, then cleared the codes and returned the vehicles to service. That is the definition of a dream come true for a home mechanic. Once you hold the UCAN-II and use it, you will never want to do car repairs without it.

The quality of this Youcanic scanner is simply astounding. It's built like a unit costing $5,000. It's hefty, solid, the screen is high resolution. The functions are amazing. It even works on Mercedes Benz models with the 38pin adaptor. Packaging is top notch. The carry case is excellent. My only complaint is that the 38pin adaptor I purchased to diagnose the SRS systems on my Mercedes W210 won't fit inside the hardshell carry case.

Overall -- best piece of automotive diagnostic hardware or tool I have ever bought. Highly recommended. Awesome.

I was try to figure out an ABS, Traction Control and Hill Assist lights out I knew it was a wheel sensor but what one. I took it to the dealership service department to fix problems that they did work on. They want to charge me for that and I ask them to put it on diagnostics and they said it was rear sensor. Then I got my Youcanic and ran the diagnostic and it was spot on. I did the work on the car and if I would had the Youcanic before. I would have saved $296 plus I saved over $1200 doing the work myself. So what I’m saying is don’t wait to get one. Just buy one now and start saving money. And the Youcanic showed me more codes than the dealership showed me.