vLinker MC Bluetooth OBD2 Diagnostic Scanner for Android & Windows

I have a JL Wrangler which suffered from a glitch with the auto headlight function after using FlashCal. The Vgate vLinker MC+, when combined with JScan, fully resolved the issue. The device itself is easy to use. With Bluetooth Low Energy, I didn't even have to pair it using traditional Bluetooth. You just plug the device into the OBD-II port, then launch whichever diagnostic app you have, select the BLE option and it connects within seconds. It's small enough that I can just throw it into the glove box or the center console and just dig it out again whenever I need it. It was fully compatible with my vehicle and I was able to change a lot of functions using it--far more so than I could do with FlashCal. It worked pretty well, although there were a few hiccups when trying to save some of the altered settings where the app became stuck while trying to save the changed settings, but I was able to resolve that issue by restarting the app and cycling the vehicle's ignition state. If you own a JL Wrangler and have issues where you have malfunctioning auto headlamp feature, I have the tutorial on how to fix that issue below: FlashCal and Tazer users, including myself, have reported the two products that introduce a glitch with the JL Wranglers' auto headlight function, where the headlight will automatically turn on when the ambient lighting is low but refuse to automatically turn off when it gets bright, which commonly happens when you're driving through a tunnel or at an extended stop under an overpass. Some people have suggested replacing the ambient light sensor by the windshield, which I tried and that did not resolve the issue. What seems to happen is when you use FlashCal and Tazer to change any of the settings, they seem to cause a bug where invalid value is entered for how the BCM reads the voltage from the ambient light sensor. The way the ambient light sensor works for JL seems to be resistor-based where being exposed to brighter ambient lighting will cause it to read lower voltage and vice versa. FlashCal and Tazer do not have a way to read and adjust the data to and from the ambient light sensor. JScan, on the other hand, goes fairly in-depth with not only reading the voltage but allows you to adjust, as well. After you plug the device into the OBD-II port, you can use Bluetooth Low Energy on your phone to establish connection to the JScan app. That only takes a few second, and you don't even have to pair the device to your phone. You will then need to go into the ADAPTATION menu, and then AUTO HEADLAMP & AUTO HIGH BEAM SETTINGS. You will then see two options, "Auto Headlamp OFF Threshold" and "Auto Headlamp ON Threshold". When I accessed mine, they were set at weird three-digit values instead of the proper voltages. Change the OFF threshold to 2.80V and ON to 3.60V, and you should have full functionality of auto headlamp again.

Product: Vgate vLinker MC+ Bluetooth OBD2 [bought Jan 2022] $60 Car: Mazda CX-5 2021 Test: OBD software 'FORScan Lite' v1.5.12.1 on 2 mobile phones [Android 12 & Android 10] I thought there was a problem as, after following the instructions to pair phone with BT [i.e. select "vLinker MC-Android" in phone BT 'pair new device' settings], it prompted for the code [1234], then the BT would seem to connect...then disconnect about 2 secs later [according to phone] :-(. I was expecting it to stay connected [& now clicking the 'connect' button on phone BT does nothing] Turns out this BT disconnecting is expected - the above pairing defines a new BT adaptor config in phone [for the MC+] and you now have to set your OBD software to use this config i.e. in my case run the FORScan software on phone then select 'Settings' / 'Bluetooth adaptor' & choose 'vLinker MC-Android' [I left 'Settings' / 'Connection type' as 'Bluetooth 0']. When you click the FORScan icon to connect to MC+, it will then start this BT connection - only need to do this BT pairing once I think VGate should update their instructions to indicate the BT disconnect is correct/normal [I almost returned mine] FYI 1: When connect the MC+ to car socket, the MC+ power LED lights up solid red & the BT LED goes on/off every second [i.e. indicates that BT disconnected]. When click the button on front of MC+ [to enter BT pairing mode], the BT LED flashes rapidly [several times a sec] until pairing complete [then goes back to the 1 second on/off i.e. disconnected]. When connect with FORScan, the BT LED is solid blue [i.e. connected] - the OBD and Host LED flash rapidly only when pulling data FYI 2: I can use BT to pair the phone to the car infotainment [e.g. to play music from phone to car] at the same time as FORScan is pulling live data from MC+. This may depend on phone FYI 3: The FORScan software is only intuitive once you get the hang of it e.g. run it & BT connected to MC+ but NOT active [don't click the button that looks like play] so can then add items [called PID's] to monitor [e.g. speed, revs, oil pressure/temp...there are literally hundreds] - after adding PID's, only then click the play icon to actively get the vals of these PID's from car i.e. can't add PID's when in play mode I'd expect other OBD software to work similarly i.e. need to pair MC+ to phone & then change the software config to use this connection. Remember, although the MC+ should work on most modern-ish cars [US >1996, Euro cars > 2004, OZ/NZ > 2006 etc] and some light trucks, the OBD software you choose usually only fully supports [i.e. a large range of PID's] on very specific car make [and to a lesser extent model/year] e.g. FORScan is for "Ford, Mazda, Lincoln and Mercury vehicles" I got this OBD scanner as vLinker series seem to be well supported by OBD software [so less chance of 'issues'], it supports additional protocols [future proofing & use on other car makes], can connect using android/iOS/laptop [only tested first], and has a faster transfer rate [baud equiv of 500kbps - about double that of cheaper OBD readers] Overall, the MC+ seems to do what it says on the tin! M

I use this OBD2 scan tool regularly with both JSCAN and FORScan, and it has performed flawlessly every time. The Bluetooth connection is quick and stable across iOS, Android, and Windows devices, making it easy to switch between different platforms when needed. Setup was straightforward, and the tool pairs seamlessly with the apps. It reads and clears codes quickly, provides accurate live data, and works well for vehicle configuration and advanced diagnostics. I have used it on multiple vehicles without any compatibility issues. The build quality is solid, and it is compact enough to store in a glove box or tool bag. It has become one of my go-to tools for both professional-level diagnostics and personal vehicle maintenance. For the price, the reliability and functionality make this a great choice for anyone who uses JSCAN, FORScan, or other advanced diagnostic apps.

Nice, small form factor. I got it to connect one time via bluetooth. It never connected again. I tried following the instruction and that didn't help. Bluetooth is pretty simple to connect, and it shouldn't be this hard (or impossible). And this was with an Android, not Apple. UPDATE: I updated it to four stars. Customer service was prompt and very helpful. I got it working and it works great!

Did exactly what I needed it to do. Works everytime and never have trouble connecting. Durable and sleek design. Must have for the diy guys that have some common sense.

Terrible. Refuses to update. Followed instructions and it will not connect to iphone bluetooth.

This thing is awesome for a diy hacker wanting more out of my older daily driver. I have a 2010 base model Corolla that I drive the crap out of. One thing I love about these low-tech cars is that it's a blank canvas to have fun and not worry about resale value - not like this thing affects that. I have a old surface pro 3 that i've rigged up as my interface for the car. Wanted to take the car integration part to the next level and this OBD2 tool lets me do exactly that. I'm not a software engineer, but lets say I dabble. I can't write anything meaningful on my own but AI like Gemini fills in the blanks for me. I wrote an awesome python tkinter based dashboard for my surface pro that lets me see all sorts of fun things like speed, tach, temperatures of engine coolant and even transmission temp! MAF sensor gives me instant MPG estimation. I can even see my individual tire pressure values when my car only has a light that says when something is low! I have not had a problem with connectivity once I figured it out. For Windows 10, the key is to pair it (even though it says android) with 1234. It just worked right out of the box for me with what I wanted to do with it. If you are a diy kind of person and isn't afraid to throw some vibe coding at it, you can have a lot of fun with the data and create something cool. That's what i wanted out of it and that's what it gave me. If that is you, then buy it. Can't speak for the other stuff like pairing it with existing apps or whatever. But its easy to use for me! Compatible right out the box. Love it!!

This device functions exactly as advertised. I found, separately on YouTube, that a security bypass was necessary for my 2018 Jeep Wrangler JLU Sport. I tried without the cable, but it didn't work. Once I installed the bypass, I was able to do everything I wanted. The app was fairly intuitive and now i need to sirens some time figuring out what settings to change to get my daytime running lights working how I want them.