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That said, the most impressive feature of this system is the updates that Lemur has rolled out. This isn’t an essential feature, since it’s a test your car will do automatically after a certain amount of time (specific conditions to trigger the test vary), but it would make this a more valuable tool for someone fixing a problem right before taking a car in for emissions testing. The one feature of the better stand-alone scanners that didn’t show up in BlueDriver is a trigger for the mode $08 evaporative system test. We were also impressed to see the way BlueDriver keeps a record of every car you connect it with and logs the date, time and any trouble codes it finds. If you work on car stereos or upholstery, this is a killer app.

Airbag codes are notoriously difficult to read and reset, and just unplugging the occupant sensor or seatbelt sensor cables on your front seats will trigger them.

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In use, the fact that this scanner found and reset every code we tried to generate on our 2007 Toyota Corolla was very impressive. There’s a pretty good chance you do own a compatible device, though. It doesn’t include a tablet, so if you don’t already own or want one then a tablet-style scanner from Autel or Launch might be a better purchase for serious diagnostic work. This isn’t going to replace a $5,000 scan tool, but it might replace one that cost you $500. We checked against a list of the top-selling cars in the U.S., and the only top-ten omission was Chevrolet airbag and tire-pressure compatibility. Definitely check out your car on a compatibility list before you invest in a tool like this to see what you will or won’t get. This is the kind of detail we like to see. Lemur has good info on what data their app can and cannot see for a specific vehicle on this compatibility list. There’s even a flashlight button! See Price at The live display and report sharing functions are best-in-class, too. If your car is on the long list of models supported, this scanner can show you the most elusive trouble codes and reset them. The feature list for BlueDriver is truly impressive. The fact that this is a one-app adapter is a disappointment since there are some other apps like Carista and Torque that have interesting features BlueDriver doesn’t cover, but the disappointment fades when you see that the app and adapter connect right away and work seamlessly with each other. (That’s pretty much every device made since 2012.)

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This system uses the new Bluetooth 4.0 protocols, so it’s compatible with both Android and Apple’s iOS devices so long as they’ll run Android 4,0 or iOS 7.0 or higher.

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You can install the app for free on as many devices as you want, and the adapter will unlock all the functionality, service bulletin and recall databases and vehicle-specific modes. Where other companies will sell a limited app with add-on modules that open up enhanced diagnostics, or a subscription-based app that means you’ll pay over and over again to keep using the hardware you’ve bought, BlueDriver is a one-time hardware purchase. What’s big about BlueDriver is how simple and well-integrated it is.

Some of those other solutions are even offering similar features. It’s not that BlueDriver is a revolutionary idea plenty of other companies are selling Bluetooth adapters that work with a specific smartphone app. Lemur Vehicle Monitors is a tiny company located on the tiny island of Newfoundland off the eastern shore of Canada, but their BlueDriver app and Bluetooth adapter is one of the biggest things that’s happened to automotive diagnostics in decades.

Best wired scanner: Launch – CReader V+īest Bluetooth scanner: Lemur – BlueDriver.

Best Bluetooth scanner: Lemur – BlueDriver.

The 5 Bluetooth OBD2 adapters we tested.

If you prefer not to use a smartphone, look to the Launch – CReader V. With impressive features like ABS and airbag system access usually only found on more expensive specialty tools, the BlueDriver smartphone app has a great interface that makes diagnostic data much easier to work with. After consulting with a local expert technician and running a month of tests on engines, emissions components, braking and airbag systems with 13 top scanners, we found the Lemur – Bluedriver Bluetooth adapter is the best OBD2 scanner.