Autel MaxiCheck MX900 Bidirectional OBD2 Scanner

The Autel MaxiCheck MX900 is a tablet-style bidirectional OBD2 diagnostic scanner for reading vehicle systems, running active tests and performing service procedures. Its 8-inch screen and claimed support for full-system diagnostics, more than 40 service functions and wired vehicle communication suit experienced DIYers and repair professionals, subject to vehicle-specific compatibility.

At a glance

Claims access to available vehicle systems for reading and clearing codes, viewing live data and retrieving ECU information.
Bidirectional active tests can command supported vehicle components, with examples including fuel pumps, injectors, cooling fans, headlights and windows.
Lists more than 40 maintenance and reset functions, including oil, EPB, battery registration, steering-angle calibration and ABS brake bleeding.
Auto VIN and one-tap Auto Scan are listed alongside CAN FD and DoIP protocol support.
Manufacturer states the scanner continues working with existing functions after the free update period, while future updates and coverage can require a paid subscription.

Price

$471.20Save 16%

Reference price: ~~$559.00~~

Price checked: Nov 14, 2026

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Pros and cons

Pros

Combines system diagnostics, live-data graphing, component active tests and maintenance functions in one tablet-style tool.
An 8-inch touchscreen provides more display area for diagnostic information than a basic code reader.
Customer feedback describes the tool as fast and user-friendly, and highlights broad system scanning.

Cons

Vehicle-specific coverage and service procedures are not universal, so advertised capabilities may not be available for every vehicle.

Technical specifications

13 specifications

Identity
Brand	Autel
Model	MX900

Display and video
Screen size	8 inches

Power and battery
Power configuration	Battery Powered

Dimensions and installation
Dimensions listed	12"L x 4"W x 15"H

Diagnostic capabilities
System access	Full System Diagnostics
Service functions	40+ Maintenance Service
Active tests	3000+ Tests
Vehicle coverage claim	150+ Makes Coverage
Protocols listed	DoIP &CAN-FD Protocols

Software and connectivity
Operating system	Android 11.0
Software updates	1 year of free software updates
Connection	The wired connection ensures stable communication during vehicle diagnostics.

What to know before buying

Listing details to confirm

The listing claims broad coverage, 40+ services, 3000+ tests and support for 150+ makes, but also says services are not universal. Verify the exact functions and vehicle coverage for your make, model and year before purchase. The free software updates are stated to last one year. Continued use of existing functions is claimed after that, while future updates may require a paid subscription.

What’s in the box

Included

Tablet
Adapter
Cables

Who is it for?

A good fit for

Experienced DIY vehicle owners who want system-level diagnostics, live data and service resets.
Repair technicians who need a wired scanner with active tests and support for newer CAN FD or DoIP-equipped vehicles, after confirming compatibility.

Less suited to

Shoppers seeking a simple engine-code reader or a scanner with guaranteed access to every service function on every vehicle.
Anyone who needs wireless vehicle communication. The listing describes the diagnostic connection as wired.

Autel MaxiCheck MX900 Bidirectional OBD2 Scanner · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.5 / 5 · 147 ratings

5 stars81%81%
4 stars7%7%
3 stars4%4%
2 stars3%3%
1 star5%5%

Customer feedback highlights perceived value, fast operation, ease of use and broad system scanning. Some customers specifically describe reading and clearing codes across modules and mention features such as AutoAuth and electronic parking-brake adjustments. Those reports align with the listed full-system and service-tool aims, but do not establish that every feature works on every vehicle. The overall rating distribution is mostly five-star, with a smaller spread of lower ratings, so experiences are not uniformly positive.

Positive themes

Customers describe the scanner as fast, user-friendly and useful.
Feedback highlights comprehensive system scanning and functionality.

Frequently asked questions

Can the MX900 run active tests?

The listing claims bidirectional active testing and gives examples such as fuel pumps, injectors, cooling fans, headlights and windows. Which tests work depends on the vehicle.

Does it work with every OBD2 vehicle?

No universal service-function coverage is promised. The listing advises checking vehicle compatibility, and functions can vary by make, model and year.

How long are software updates included?

The listing specifies one year of free software updates. It says existing functions continue afterward, while future updates and coverage may require a paid subscription.

Is the MX900 wireless?

The listing describes wired communication with the vehicle. It separately mentions Wi-Fi printing, which is not a claim of wireless vehicle diagnostics.