Autel MaxiScan MS309 Review [‎Supports CAN & Smog Test]

Every person wants to get a device that can maximize the satisfaction level with the services and quality. But do you have the facility to consume the features of comprehensive vehicle coverage, DTC definitions, and retrieve vehicle information at a very low price? Do not be worried if the answer is opposing because, with the Autel MS309, you can get these aspects at a very affordable price. By reading the Autel MaxiScan ms309 review, you can understand the facts thoroughly. 

The Autel MaxiScan ms309 has a backlit display, and the device can retrieve all the vehicle information. With the screen, you can observe the codes and understand clearly what the fact is. On the other hand, it retrieves CVNs, calibration identification numbers, and vehicle identification numbers. Moreover, this basic diagnostic scanner tool has extensive vehicle coverage and compatibility, along with user-friendly gestures. For the mechanic or professional, this feature helps a lot. Besides these aspects, the scanner tool provides the facilities for viewing freeze frame data, diagnostic trouble code definition, smog test results, etc. 

Technical Specifications Of The Autel MaxiScan MS309 OBDII Scanner

Features  Autel MaxiScan MS309
Display:  Backlit, 128×64 pixel display
Dimensions:  4.34 x 2.74 x 0.8 inches
Language Supported:  Spanish, German, English, and French
Protocols:  J1850 PWM, ISO2000, CAN, J1850 VPW, KWP2000, and ISO9141
Item Weight:  9.1 ounces
Vehicle Coverage:  USA, Asian, and European vehicles models, 1996 and newer
Operating Temp:  0 to 60 ℃ (32 to 140 ℉)
Storage Temp:  -20 to 70 ℃ (-4 to 158 ℉)
Power:  8 to 18 V provided via the vehicle battery
I/M readiness status check:  Yes
Retrieve Vehicle Information: Yes
View Freeze Frame: Yes
Read & Erase Codes: Yes

Affordable Autel Maxiscan MS309 OBD2 Review 2023

Now let’s see some significant characteristics of the Autel ms309 universal obd2 scanner.

DTC Definitions

Showing the diagnostic trouble codes is very significant to detect any malfunction instantly. With the help of this viewing opportunity, you can easily read the codes and understand the meaning of the default codes. The whole procedures are very straightforward and instant that one can see the definition without using the help of the internet. So the user can save valuable time and internet data.

Retrieve codes and vehicle information

With the help of the MS309 automotive diagnostic scanner tool, you can enjoy the feature of retrieving vehicle information. The device not only reads and removes general codes, but it retrieves manufacturer-specific P1, P3, and U1), generic codes (P0, P2, P3, and U0), and pending codes as well. The scanner device retrieves calibration verification numbers, vehicle identification numbers, and calibration ID. 

When you buy a second-hand car, it is necessary to know if the ECU is suitable for your vehicle. So it is a crucial part of your diagnostic device. Unfortunately, most of the devices fail to serve the offer to their customers; only a few of them have the facility. 

Smog Check

Before the annual emission readiness status test, it is essential to know if the vehicle is ready for the test or not. You can learn about all the emission-related components and systems. If these are at an appropriate amount or not, you can get the information through the I/M readiness check function. 

With the help of a readiness monitor series including fuel system, misfire, O2 sensor, EGR system, catalyst, O2 sensor heater, evaporative system, secondary air, A/C system, and heated catalyst, the device shows the emission status. 

Autel MaxiScan MS309 Scanner Shows Freeze Frame Data

This diagnostic scanner tool sets a code and then records a snapshot of vehicle operating parameters to identify the issue if any emission-related disturbance occurs. For knowing the reason behind the illumination of the check engine light, this feature is very significant and mandatory. It is one of the basic features of the OBD2 diagnostic scanner device. Autel Maxiscan MS309 OBD2 Scanner

Vehicle Coverage

An ideal diagnostic scanner gadget always serves much more vehicle coverage. This aspect is vital for mechanics or garage owners because they have to work with many more vehicles. Some of the scanner devices can not provide a vast range of vehicle coverage. 

With the Autel MaxiScan ms309 OBD2 diagnostic scanner tool, you can get amazing vehicle compatibility and coverage. It allows all the five OBD2 protocols, including J1850 PWM, ISO2000, CAN, J1850 VPW, KWP2000, and ISO9141. Moreover, the scanner device supports all OBD2 compliant vehicles of post-2000 Asian, European, and post-1996 American vehicles, including light trucks and cars.

Multilingual menu

The automotive diagnostic scanner tool offers a multilingual menu. When you are not a person who has a native language like English, then the feature will be very beneficial for you. In the multilingual menu, the device serves Spanish, German, English, and French. You can change the language of the menu according to your preference and comfort. 

A user finds a comfort zone with her native language. Understanding the task can be more straightforward when you can get a device in your mother tongue. So the aspect should be appreciable. 

User-friendly and handy gesture

When it turns into a burden to carry a diagnostic scanner tool, this can not be an appropriate gadget. One of the crucial indicators of a perfect tool is user-friendly and handy construction. 

The MaxiScan ms309 includes ‎4.34 x 2.74 x 0.8 inches and 9.1 ounces, so it is not difficult to maintain the scanner device properly. You can carry the ms309 tool very comfortably. Furthermore, the device has plug-and-play and easy-to-use characteristics with which the user can use it more comfortably. 

Autel MaxiScan MS309 Offers Free software upgrade

Getting free software upgrading opportunities is a blessing. All of the products do not serve the advantages to their customers. When one receives this facility, one can easily experience new and updated features of this product. You can find out a few gadgets that serve lifetime free software updates to their users. 

The Autel MaxiScan ms309 OBD2 diagnostic scanner tool is one of the scanners that serve lifetime free updating opportunities. Furthermore, the diagnostic scanner provides forty-five days money-back guarantee also. Autel MaxiScan MS309

Now let’s consider some prime positive and opposing aspects of the Autel ms309 MaxiScan OBD2 diagnostic scanner tool.

Positive aspects 

  • The obd2 scanner tool is very cheap.
  • The device offers a user-friendly gesture to the consumer.
  • You can get a multilingual menu with this device.
  • Autel MaxiScan ms309 obd2 offers lifetime free software upgrading opportunities.
  • With ms309, the user can get more comprehensive vehicle coverage and compatibility. 

Negative aspects

  • There is no user manual or instruction for the consumers.
  • This Autel Scanner can not read Airbag, ABS, and engine codes.


To find a gadget with all the required characteristics at an appropriate budget is really difficult. A perfect diagnostic scanner tool can make driving comfortable and vehicle maintenance easier. In today’s busy and fast world, it is very challenging to save time. Busy people always try to concise their work with the help of smart gadgets. So this Autel MaxiScan MS309 review article will save your time and money as well. You can maximize your satisfaction level through the OBD2 diagnostic scanner tool. Because the device is smart enough and the cost is very cheap. With many more functions and qualitative performance, you can experience better than before. 


Is it possible to have a device that remains connected while driving?

You have the device that remains connected. In practice, when the engine is off, and the ignition is on, the device can pull the OBD2 code.