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Autel MaxiScan MS300 CAN Diagnostic Scan Tool for OBDII Vehicles

by Autel
4.4 out of 5 stars 4,298 customer reviews
| 854 answered questions

List Price: $39.99
Price: $14.93 & FREE Shipping on orders over $35. Details
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Red
  • Enter your model number above to make sure this fits.
  • Easy 2 Button Design to read and clear codes
  • CD catalog of 7000 Trouble codes and descriptions
  • Retrieves generic and manufacturer specific Diagnostic Trouble Codes (DTC), includes definitions lookup software on CD and displays DTC definitions on screen
  • Features an easy-to-read backlit LCD screen, multilingual menu and DTC definitions and standard 16-pin OBD-II connector--no additional cables are needed
  • Retrieves VIN (Vehicle Identification No) on 2002 and newer vehicles that support Mode 9
  • Supports the CAN (Controller Area Network) protols and all other current OBD-II protocols
  • Works with most OBD-II compliant U.S., European and Asian vehicles (OBD-II is standard on all cars sold in U.S. post-1996)
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Frequently Bought Together

  • Autel MaxiScan MS300 CAN Diagnostic Scan Tool for OBDII Vehicles
  • +
  • Docooler Obd-ii Obd2 16pin Male to Female Extension Cable Diagnostic Extender 150cm (5ft)
Total price: $27.92
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Product Information

Color:Red

Technical Details

Brand Autel
Item Weight 11.4 ounces
Product Dimensions 6.3 x 2 x 9.1 inches
Origin China
Item model number MS300
Batteries Lithium ion batteries required.
Manufacturer Part Number MS300
Folding No
Voltage 12 volts

Additional Information

ASIN B001LHVOVK
Customer Reviews
4.4 out of 5 stars 4,298 customer reviews

4.4 out of 5 stars
Best Sellers Rank #9 in Automotive (See top 100)
#2 in Automotive > Tools & Equipment > Diagnostic & Test Tools > Code Readers & Scan Tools
Shipping Weight 8 ounces (View shipping rates and policies)
Domestic Shipping This item is also available for shipping to select countries outside the U.S.
International Shipping This item can be shipped to select countries outside of the U.S. Learn More
Date First Available November 18, 2008

Warranty & Support

Warranty, Parts:PartsWarranty, Labor:We offer one year warranty including labor and parts. The buyer is responsible for the shipping fees.
Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

Product Description

Color: Red

Retrieve generic and manufacturer specific Diagnostic Trouble Codes (DTC), includes definitions lookup software on CD and displays DTC definitions on screen.

From the Manufacturer

autel, ms300, scan tool

Customer Reviews

Top Customer Reviews

Color: Red Verified Purchase
I thought I had a bad unit with LINK ERROR on two different cars. You will never see the MAXISCAN MS300 display on the LCD, as described in the manual. Here are the real steps to follow:

1. With the ignition off plug it in. I immediately saw CAN OBD2 on the LCD.
2. Turn the ignition switch to the ON position. This is the position just before you crank the starter. Do not start the vehicle.
3. Then press the ENTER button on the reader which starts the scan.
4. Use the SCROLL button on the reader to view the results.

This is a handy tool, but almost any auto parts store will do a free code scan for you (Auto Zone, O'Reilly, Champion...), so that might be a cheaper way to go if you don't expect to use it much. An auto repair shop can charge you $100 or more to do the same, depending on where you are in the country.

The manufacturers website [...] and manual appear to be done by a novice "Chinese to English" transalator, so can be cryptic as best and totally misleading at worst.

Note that just resetting the code will not let you pass inspection. The sensors have to return a ready/OK code for the emissions test. It takes driving several miles for the sensors to retest and get back to the ready/OK status.
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Color: Red
I bought this to investigate the occasional engine light codes on our family's two cars ('99 BMW 323i and 2005 Toyota Corolla). Considering I've used it about a half dozen times so far, it's already paid for itself and then some. All of the problems so far have been simple and easy to fix myself- loose gas cap, dirty MAF sensor, bad spark plugs, etc. I would have paid thousands of dollars for a mechanic to diagnose and repair these problems if I didn't have this reader. I've also used this on my friends' 2004 Accord and '98 Protege, again saving them hundreds of dollars. This is the secret auto mechanics don't want you to know. The $100 they are charging you to "read" or "diagnose" your engine light literally involves 5 minutes of labor and an OBD reader that is fundamentally no different than this one. They would like to keep everyone in the dark and pay their exorbitant fees, but fortunately you don't have to be a victim. Even if you never own a single wrench, this is the best investment you can possibly make to maintain your vehicle and will save you hundreds, if not thousands, of dollars in labor charges alone.

Most of the features have been covered extensively in the ~180 reviews here, so I won't reiterate them here. I will say that despite only having two buttons, it's easy to navigate the menus once you play with it for a few minutes. This unit is powered by the OBD-II port itself, so you don't have to worry about batteries. It does allow you to reset your 'check engine' light. As far as the CD is concerned, I knew it would be a POS so I automatically threw it out. All you need is to write down the code(s) it generates, and then type them into Google and you will have you answer (and often the solution!). You can also go to a vehicle forum specific for your make (e.g.
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Color: Red Verified Purchase
I had a check engine light on my Toyota Camry 2001. I did a little research and found out that a computer scanner called an OBD II can be used as a diagnostic tool for most cars on the road today (1996 and newer with some exceptions). I decided to buy this affordable scanner rather than pay a mechanic $70 to $100 (plus sales tax, shop fees, and all their other nickle and dime fees) to read the code. When I got the Autel MaxiScan delivered, I read the instructions a couple of times. Then, I went out to the car and looked for the place to plug it in, which was right under the steering wheel. I plugged it in, turned the ignition key half way, pressed a few buttons on the scanner, and presto! It read P0401, which means egr flow insufficient. As it turns out, that is a common problem with 2001 Toyota Camrys. I cleared the engine light with the scanner, and unfortunately the engine light came back about 125 miles later. The P0401 code also came back.
I still have to resolve the problem, but at least I am not at the mercy of a mechanical telling me what is wrong with my car, or charging me a nice chunk of change for that information. If you get a check engine light on your car, I recommend you get this scanner and read the code before you go to an auto mechanic.
8 Comments 274 of 313 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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Color: Red Verified Purchase
First of all, I must state that the scan tool worked well for my cars. Once connected it will:

- display diagnostic codes
- erase ALL codes
- retrieve I/M readiness status
- display the VIN number on 2002 or newer vehicles
- rescan

The MS300 supports the OBD II or OBD2 (On-Board-Diagnostics II) system and it understands all OBD2 protocols that a car may use: PWM, VPW, KWP2000, ISO9041, EKWP2000 or CAN. Once the proper protocol is detected, the MS300 is ready to display whatever Diagnostic Trouble Codes (DTC) the car computer's memory may be holding.

It should be noted that:

# it only retrieves codes already stored in the computer
# it does NOT provide any 'real-time' monitoring
# it is completely stand-alone and no Web-updates are possible
# it does not have printing capabilities
# it is powered through the car's own DLC (Data Link Connector)

The manual while not completely accurate does offer sufficient information to successfully connect and operate the device. It also includes a printed list of over 1000 generic Diagnostic Trouble Codes (DTC) definitions. 8000 more manufacturer specific DTCs can be found on the CD with more information at the company's own Web site.

In my case, I was able to diagnose within minutes the source for the 'Service Engine Soon' warning on my dashboard:

P0442 - EVAP Emission Control System Leak (Small)

I erased the codes and, if the warning reappears, I will know EXACTLY what to tell the technicians.

Given that I purchased this during one of Amazon's lightning deals, the price was right and I feel that I am getting a lot of value out of this little tool.
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Autel MaxiScan MS300 CAN Diagnostic Scan Tool for OBDII Vehicles
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