Autel MaxiCOM MK808S Review: A Bidirectional Scan Tool for Serious DIYers
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Basic code readers tell you what is wrong. A bidirectional scan tool lets you command parts of the car to test them. The Autel MaxiCOM MK808S brings that pro-level ability to a price that serious DIYers can justify.
In this Autel MK808S review, we look at its active tests, service functions, vehicle coverage and whether it is worth the jump from a basic scanner.
Autel MaxiCOM MK808S
4.6 / 5 ReviewsWhiz Score- All-system diagnostics across 200+ brands
- 3000+ active tests for fans, windows, pumps and more
- 28+ service resets including oil, BMS and SAS
✅ Pros
- True bidirectional control
- Covers engine, transmission, ABS, body and more
- 28+ service and reset functions
- Secure gateway access for newer FCA vehicles
- Fast hardware and sharp 7-inch screen
❌ Cons
- Overkill for simple check engine lights
- Wired connection limits movement
- Learning curve for beginners
- Some features may need updates over time
Autel MaxiCOM MK808S Key Specifications
| Type | 7-inch tablet scan tool |
| Diagnostics | All-system scan |
| Active tests | 3000+ bidirectional |
| Service functions | 28+ (oil, BMS, SAS, injector…) |
| Vehicle coverage | 200+ brands |
| Gateway access | FCA & Renault SGW, VAG SFD |
| Connection | Wired |
| Hardware | RK3566 CPU, 4GB RAM |
All-System Diagnostics
The MK808S scans every module it can reach, including engine, transmission, ABS, airbag, body and electrical systems. Its 5-in-1 live data view lets you graph several sensor readings at once, which helps you spot problems that only show up under certain conditions.
Bidirectional Active Tests
Autel says the MK808S can send commands to more than 3,000 actuators, including cooling fans, lights, horn, door locks, windows, mirrors, cameras and pumps. Being able to switch a component on and off from the scanner is one of the fastest ways to confirm whether a part is faulty or the problem is in the wiring.
Service Functions
You get more than 28 service functions, such as oil reset, battery management (BMS), steering angle sensor (SAS) calibration, injector coding, clutch learning, cylinder balance, suspension calibration and sunroof initialization. If you do your own maintenance, these resets can save trips to the dealer.
Coverage and Gateway Access
The MK808S covers more than 200 vehicle brands. It also supports secure gateway access on newer FCA (Chrysler, Dodge, Jeep, RAM) and Renault vehicles, and VAG SFD, which many cheaper tools cannot do.
Who Should Consider a Tablet Scanner Like the MK808S
The MK808S is a big step up from a basic code reader. It is aimed at serious DIY mechanics, people who maintain several family cars, and small independent shops that need dealer-style functions without a dealer-level price. If you only want to read a check engine light now and then, a simpler tool will do. If you want to bleed ABS brakes, reset oil service lights, relearn a throttle body or register a new battery, this is the kind of tool you need.
Because it covers more than 200 vehicle brands, it also suits households with a mix of domestic, Asian and European cars.
Common Jobs You Can Do With It
- Read and clear codes from every module, including engine, transmission, ABS, SRS and body systems.
- Reset oil life and service reminders after an oil change.
- Register a new battery on cars with a battery management system (BMS).
- Calibrate the steering angle sensor after an alignment.
- Run an electronic parking brake (EPB) service when replacing rear pads.
- Use active tests to switch fans, pumps, lights and solenoids on and off to check that they work.
- Relearn the throttle body and perform injector coding on supported vehicles.
These functions are what separate the MK808S from Bluetooth app scanners. They can save a trip to the dealer for jobs that would otherwise require dealer software.
MK808S vs Other Bidirectional Scanners
| Model | Type | Bidirectional | Connection | Best for |
|---|---|---|---|---|
| Autel MaxiCOM MK808S | 7-inch tablet | Yes, 3000+ tests | Wired | Serious DIY and small shops |
| Autel MaxiCheck MX900 | 8-inch tablet | Yes | Bluetooth VCI | Users who want wireless freedom |
| Launch CRP129E | Handheld | No | Wired | Service resets on a budget |
| Topdon AD800BT 2 | Tablet | Limited | Bluetooth | All-system scans at a lower price |
The MK808S gives you the deepest feature set in this group with a wired connection that some technicians prefer for stability.
Tips for Getting Started
Charge the tablet fully and connect it to Wi-Fi before your first job so you can register the tool and install updates. Autel uses an AutoVIN feature that reads the vehicle identification number and selects the right make and model automatically, which saves time and reduces mistakes.
Start with simple tasks like a full system scan and an oil reset before moving on to active tests. Always follow the on-screen instructions closely during service functions, and keep the car on a battery maintainer during long procedures so voltage does not drop mid-task.
Updates, Support and Long-Term Costs
Autel scanners usually come with a period of free software updates, after which you can pay for a yearly update subscription. The tool keeps working without updates, but newer vehicles and new functions require them. Factor that into your budget if you plan to work on new cars.
Autel has a large US support network and an active user community, so it is easy to find help and how-to videos. For many DIYers, a tool like the MK808S pays for itself after a handful of jobs that would otherwise need a shop.
Who Should Buy the Autel MaxiCOM MK808S?
Buy it if you do your own repairs, work on several family vehicles, or run a small shop and need bidirectional tests and service resets.
Skip it if you only want to read check engine codes. A simple reader like the Autel AL319 or a Bluetooth scanner like BlueDriver costs far less.
Alternatives to Consider
- Autel MaxiCheck MX900: A newer, larger-screen sibling with similar capabilities.
- Launch CRP129E: A cheaper tool focused on four systems and resets.
- Topdon AD800BT 2: A Bluetooth bidirectional scanner with 28+ resets.
Final Verdict
The Autel MaxiCOM MK808S is one of the best values in bidirectional scan tools. It gives DIYers access to the same kinds of tests and resets that shops use, on fast hardware with a clear screen. If you have outgrown basic code readers, it is a smart upgrade.
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Frequently Asked Questions
Is the Autel MK808S bidirectional?
Yes. It supports more than 3,000 active tests that let you command components such as fans, windows and pumps.
Does the MK808S work on all cars?
It covers more than 200 brands, but features vary by make, model and year. Check Autel's coverage list for your vehicle.
Can the MK808S reset oil service lights?
Yes. Oil reset is one of its 28+ service functions.
Is the MK808S wireless?
No. It uses a wired connection to the OBD2 port, which Autel says is more stable than Bluetooth.
Who is the MK808S best for?
Serious DIYers and small shops that need bidirectional tests and service resets.
How we evaluated: this review is based on the manufacturer’s published specifications, the product’s feature set, and how it compares with competing products in the same price range. Product details and images are provided by Amazon and may change. Prices and availability are accurate as of the time shown on Amazon and are subject to change.