Garmin dezl 780 Review – The Ultimate Garmin Truck GPS

Google+ Pinterest LinkedIn Tumblr

For big truck drivers looking for an equally big screen navigator, this product with its 7″ touchscreen would be a great choice.  

It comes with voice-controlled navigation and  premium mapping.

In addition, it has advanced connectivity features, and a powered magnetic mount for safe attachment.

Finally, it allows for simple removal when you leave the vehicle.

You’re always connected, alert, and on track

Pros and Cons

  • Excellent GPS features and additions
  • Info stays up to date
  • Simple route planning
  • Rugged, truck GPS type unit
  • Tablet functions can be slow
  • IFTA doesn’t work


The dēzl 780 LMT-S comes preloaded with maps that also include truck-related route warnings, such as sharp curves, bridge heights, steep grades and more to help you make the most of its high-resolution, pinch-to-zoom display.

These are valid for most major roads and highways. All you need to do is enter your vehicle profile data, which is customizable by weight, height, width, length, and hazardous materials, and find truck-preferred routes suitable for the load, size, and weight of your truck.

The Simple Truck Profile lets you easily swap trailer sizes with the touch of a button for added convenience.

Time Management

There is always the delicate balance between making your time and even coming early and meeting regulations, which dictate a certain amount of time spent resting after driving for hours on end, as well as fulfilling your physical needs.

Actually, it can be quite easy to lose track of these things if you become too focused on the road and the duties and obligations at hand.

The good news is that the Garmin dēzl 780 LMT-S has considered this as well and provides a solution.

You will not have to worry about trying too hard or breaking the law again thanks to the function that automatically calculates and notifies you of when you either have to or should take a break.

What’s more, this product is equipped with a database that pinpoints locations specific to semi-trucks or at least relevant to their food, rest, fuel, ATMs, lodging, and showering needs.

You can allow the Garmin dēzl 780 LMT-S to take the wheel just like it can take care of your route, so to speak, with respect to your schedule.

Complimentary Live Services

This device is equipped with a free mobile app, Smartphone Link, which connects it with your Smartphone so you will always know what’s happening on the road ahead.

When paired, the unit can access real-time information such as weather and traffic information. You can also buy premium content within the app, such as images from traffic cameras and advanced weather radar data.

As impressive as the functions of both keeping track of the human factor behind the wheel and planning the optimal route, the Garmin dēzl 780 LMT-S is still a singular unit with a limited amount of hardware and memory.

That is why the company has tried to expand the product’s capabilities by offering the option to connect the GPS navigator to the user’s phone to get access to the Garmin databases, so even more information is available to him.

This is achieved by the app’s real-time reports. Apart from the traffic and the weather, the app can offer current info on parking availability within the area.

Please consider that the Smartphone Link app’s service does provide a premium option, which you pay for that includes even more data.

Voice-Activated Command

The convenience of voice-activated commands and navigation make it possible to control the dēzl 780 LMT-S truck navigator by voice.

This way your hands will stay on the wheel, and your eyes – on the road, ensuring maximum safety for you and your cargo.

Stay Updated with Built-in Wi-Fi

It’s easy to keep your software and maps current thanks to the fact that the dēzl 780 LMT-S features built-in Wi-Fi.

You’ll automatically receive an on-screen notification when a new update is available and you’re connected to a Wi-Fi network.

To update your data, just use the Wi-Fi on-screen button. There is no need to plug the unit into a computer. You’ll be ready to start driving again in no time.

Garmin eLog

ELDs, or electronic logging devices, are probably one of the more annoying pieces of equipment that all semi-truck drivers are obligated by law to have as in the past six years. This basically provides a hard copy backup of all the relevant data relating to your vehicle’s current and past journeys.

Of course, the manufacturer makes it a point to offer a full-suite service and even offers an expanded connectivity option for the Garmin eLog ELD to work together with the Garmin dēzl 780 LMT-S.

The Garmin dēzl 780 LMT-S will simultaneously present that information to you in an easy to read presentation while the ELD will track all of the legally relevant information required.

The only disadvantage to this feature is that you will need to use the Garmin eLog ELD for it to work.

You should not necessarily consider that to be too much of a con as the Garmin eLog ELD is actually a fairly impressive ELD on its own.

You’ll probably end up thanking Garmin in the long run for offering the motivation to switch over to their model if you have not already.

The Advantages of Bluetooth

With this feature, you can sync a Bluetooth-enabled tablet or Smartphone to the dēzl 780 LMT-S unit for wireless calling using its integrated speaker and microphone.

You can keep your phone in your pocket or console, and avail yourself of the benefit of hands-free calling without being distracted from the road and traffic.

You can also get customizable smart notifications for texts, calls, app alerts and more, which show up right on your navigation display.

Semi-truck drivers have had to deal with the requirement to use some form of hands-free format to talk on the phone while they are driving for a very long time, notwithstanding the fact that more and more states are adopting such laws.

Due to this, any good quality GPS navigator should come with a hands-free feature.

You could expect the unit to do so in this regard as well, considering that the Garmin dēzl 780 LMT-S has pretty much surpassed all basic requirements so far. You won’t be disappointed!

The Garmin dēzl 780 LMT-S provides a Bluetooth connection to ensure that your hands-free functionality is not unavoidably interrupted to begin with.

The Garmin dēzl 780 LMT-S will serve as an intermediary when connected to your Smartphone with its integrated speaker and microphone, making it possible for you to make or get calls through the GPS navigator instead of having to use a separate device.

What is more, you can even program the Garmin dēzl 780 LMT-S to give custom alerts for texts and a variety of apps, which can be displayed on the navigator’s screen.

You do not even need to touch the unit for most of the common functions you would need to access beyond that, because the Garmin dēzl 780 LMT-S also comes with voice-activated commands, as you might recall.

Locate a Service Facility

Plan as we might, we can’t be 100% prepared all of the time. In case the unexpected befalls us, the dēzl navigator’s Truck & Trailer Services directory lists tens of thousands of truck repair and service locations across North America, including ones that offer after-hours road service.

The dēzl 780 LMT-S unit also has an included Service History Log so drivers are able to record the dates and type of service that has been carried out.

It becomes easy and convenient to keep track of tire pressure, tire mileage, tire changes, oil changes, and more.

Track and Dispatch

The dēzl 780 LMT-S unit comes equipped with a simple solution for truck monitoring that lets fleet operators send communications and track drivers easily.

This is done by means of a text message, which contains a delivery address. Drivers can choose the address from within the text message and route to the destination seamlessly.

Backup Cameras

It is possible to add a backup camera to see what’s behind your truck as you put it in reverse. The Garmin backup camera is sold separately.

The Garmin BC™ 35 wireless backup camera is compatible with the dēzl 780 LMT-S truck navigator.

When combined, the unit shows transmitted footage on the navigation display, which is 7 inches large and as good as (perhaps even better) than most analogical products.

The manufacturer of the device has taken into account how hard and grueling driving for hours and hours can be and how exhausting it is for the eyes.

The last thing we are going to claim is that driving long-haul is an easy job where you just sit there.

What is more, the Garmin dēzl 780 LMT-S offers a touchscreen, so you will not have to take a hand off the wheel for long if you need to access a function not operated by voice commands. Garmin express and updating software can take a few reboots on the PC to finish the software update.

Rebooting and Other Issues

When using the camera, the GPS can reboot once or twice while in route without going into screen saving mode.

You need to mount the camera high enough to get a decent view. Truckers have commented that the unit does a great job on curve warnings and speed limits coming up.

As for Sorting Truck gas stations, it is not as straightforward as users hope. You will need to go under “Trucks”, then “Truck stops” or “Truck maintenance” to see if the facility of your choice offers gas.

Easy Navigation

Last but not least, the navigator includes detailed maps, TripAdvisor ratings for hotels, restaurants, and attractions along a route or near a destination and powerful speakers to help you stay focused on the road.

These speakers deliver spoken step by step directions, which you can hear loudly and clearly despite road noise.

The included Trip Planner feature lets drivers create multiple-stop routes. You can plan and save future trips.

Moreover, the Easy Route Shaping feature lets you add a point on the map and adapt your route to include preferred cities, roads, or locations – all you need to do is touch the screen.

As you coast along, the Active Lane Guidance feature provides brightly colored arrows on the display to show the proper lane needed for your next exit or turn and voice prompts.

The real junction view shows realistic graphics of upcoming exits to make navigating complex interchanges easier.

The Bird’s Eye junction view features a detailed view of interchanges, looking down as if from a bird’s eye, hence the name.

The device’s navigation screen also displays the posted speed limit, your current speed, the road or highway you’re driving on, and what time you can expect to arrive at your destination.

As you have seen, the Garmin dēzl 780 LMT-S is specifically designed for semi-truck drivers, and it is quite an impressive GPS navigator.

Garmin offers top features to make your work on the road a breeze regardless of whether this unit is acting as your navigator and co-pilot, tracking legally required information about your journey and load, or providing you free, real-time updates about the road and weather conditions.


Question: Will it work with Rand McNally’s wireless backup camera?

Answer: No, the device will only work with Garmin’s BC 35 Wireless Backup Camera.

Question: What is the price for future software and mapping updates and how many map updates are included?

Answer: If the driver is going to a place that isn’t on Garmin’s map, you fill out a form to report on this place to the company or wait for someone else to map it and report it. The company relies on its clients and various external organizations for their map updates.

Question: Does it record miles by each state?

Answer: Yes, there is an IFTA logging feature on this device, which records mileage by state.

Question: Is this unit better than the 580?

Answer: We find this to be an improvement on the 580 in terms of apps and features.

Question: Does the camera work while using the GPS on this unit?

Answer: Yes, while you are using the GPS features for navigation, the camera will record dash cam video.

Question: Does this product come with a manual?

Answer: No, it doesn’t. You can check Garmin’s website for one.

Question: Does the unit recognize truck routes? Does it take drivers on the posted truck route, not the shorter route?

Answer: Yes. In trucking mode, this unit will use your vehicle specifications to lead you only down trucking itineraries our vehicle is allowed to traverse.

Question: Can I use it for another vehicle, like my car?

Answer: Yes, this device can be used in a standard automobile because it has a car mode.

Question: Does this device come with the power cable to receive traffic updates?

Answer: No, this device is not equipped with a power cable to receive traffic updates. You get the Lifetime Traffic included with this device by connecting the dezl to your compatible Smartphone. You need to buy the Garmin GTM 60 Vehicle Power Cable if you would like to use a cable instead of your phone to receive traffic updates.

Question: What size SD card can be used for the integrated dash cam?

Answer: The dezl 780 LMT-S will support a microSD card up to 64GB for the Dash Cam SD card slot. You can find more information about requirements and using a microSD card on the company’s support page.

Question: Does the Garmin 785 have night vision?

Answer: The cameras on the Garmin 785 have a forward-facing design. As a result, they do not have night vision filters. If you use the unit at night, it will record video of what the lights of the truck illuminate.

Question: Does this route your truck around traffic jams and road closures when connected to a phone for traffic updates?

Answer: Yes, the LIVE Traffic with Smartphone Link feature of this device will route you around traffic delays and road closures. You can find more information about the traffic feature on the company website.

Question: Does this have the route shaping feature as on the 770?

Answer: Yes, this model includes the Easy Route Shaping feature.

Question: Is this device compatible with the Garmin portable friction mount?

Answer: Yes, this model works with the Garmin Deluxe Portable Friction Mount (part number: 010-10908-02).

Our Final Say

Garmin has a long tradition of providing high-end products to the trucking industry, and this unit is no exception.

Garmin comes through both in terms of offering an adequate option and excellent service when looking for a robust GPS navigator with a variety of features that all appeal to a semi-truck driver.

This GPS navigator details your location and driving condition accurately.

No matter if you need help managing your time while on the road or are interested in a route that is specifically designed for semi-trucks, the Garmin dēzl 780 LMT-S GPS Navigator will do the job.

Write A Comment