It’s usually said that when/if something is cheap, there’s a good reason for it. But, does that logic apply to OBD II Bluetooth scanners and code readers? Should the cheaper-than-usual price tags of the code readers and scanners push you away to more traditional (read: wired) options or should you grasp the opportunity and save some bucks?
I’ve used wired scanners and code readers and have recently been blessed with Bluetooth-powered OBD II code readers and scanners. This puts me in a unique position to effectively determine just how reliable (or unreliable) Bluetooth-powered dongles, possessing OBD II powers can be.
Importantly, are they what you should ‘gamble’ with?
Article Outline
What Are Bluetooth Powered Scanners?
Bluetooth-powered scanners are a form of OBD II code scanners/readers that traditionally do not use cables in the course of reading and rendering information from a vehicle.
Usually, a dongle is inserted into a vehicle’s Diagnostic Link Connector (DLC), and then, paired with a smartphone (or any other smart device that has the scanner/code reader’s software installed on).
With the smart device (usually a phone) acting as the display interface (and actively hosting the app that powers the scan tool), Bluetooth-powered scanners and code readers are able to do their thing.
However, it isn’t uncommon to see models/designs where a traditional display (wired) exists in addition to the Bluetooth functionality which extends the abilities of such scanners or gives them an option when it comes to use and display.
OBD II Bluetooth scanners have a lot of advantages; advantages I’m going to share with you below.
Advantages of OBD II Bluetooth Scanners
First, because all that OBD II Bluetooth scanners ever need to work is a dongle that fits smartly into the Diagnostic Link Connector (DLC), they’re portable and very easy to carry about. Most of the units can easily fit into the palm of users (or their pockets) without making any impressions. This allows for both easy storage and carriage – when the occasion calls for it.
Second, OBD II Bluetooth scanners are usually cheaper than their wired counterparts because of the overall cheaper cost it takes to develop them. Without a traditional screen, smaller overall bodies, and no cables, OBD II Bluetooth scanners cost less to make and this cost-saving reality is passed to the final consumers, by the manufacturers. This makes the OBD II powered Bluetooth scanners and code readers budget-friendly for car owners looking to spend less on code readers.
Third, because OBD II powered Bluetooth scanners take less space and are cheaper to produce, more features are added to them, to make them worthwhile, while still keeping profit margins for their manufacturers. This results in a reality that sees the units being more packed, feature-to-price wise. This translates to better value for motorists who may be looking for a bargain while actively hunting for the most features they can get at their budgets.
Finally, because OBD II Bluetooth scanners are powered primarily by software, it’s easy to design, push and effect an update, via the app. This easy update reality makes it extremely easy to ‘step up’ to the latest versions, without the hassle (and sometimes, fees) often associated with traditional cable-operated OBD II code readers.
The four major advantages said, there are instances where an OBD II Bluetooth scanner may not be a great idea.
Why OBD II Bluetooth Scanners May Not Be a Good Deal
First, because the scanners powered by Bluetooth are usually small (dongles, actually), they are easy to lose sight of – if proper care isn’t taken. It isn’t uncommon to search everywhere for a scanner that is staring you straight in the face the whole time!
Second, most OBD II Bluetooth scanners thrive on keeping their apps up to date. Unfortunately, this may be a challenge off-grid or with mobile data/capped internet plans. With such a reality on hand, functionality may be restricted or even outrightly fail.
Third, Bluetooth OBD II scanners rely on Bluetooth connectivity for communication between the vehicle and the mobile device housing the app that powers them. What this means is that, for such scanners to work as intended, there must be a solid Bluetooth connection between the dongle and the device. Unfortunately (as with all things wireless), this can fail and when it does, is quite frustrating.
Finally, to effectively use most Bluetooth-powered scanners, you’ll need to create an account with the company offering them and have active internet access at the time of use. Without any/or both of the above, you may simply be banging your head against a ‘solid brick wall’.
So, should you consider a Bluetooth scanner?
Should You Consider a Bluetooth Scanner?
Yes – especially if you’re on a budget and need decent functions. Take, for instance, the TopDon TopScan: for the price of basic code readers that read only engine codes, this scanner reads tranny, ABS, security systems, body, and a whole lot of other modules.
As if that isn’t enough, it has bi-directional ability, several routine service functions, and the revered Auto Auth access.
It truly doesn’t get better than this.
However, before you decide to opt for ‘a dongle’ instead of a ‘proper scanner’, be prepared for the cons (already treated above) that you’re likely to encounter.
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Throttle Lan
DIY Mechanic and Freelance Auto Writer