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Autel MaxiScan MS300 CAN Diagnostic Scan Tool for OBDII Vehicles

by Autel
| 301 answered questions

List Price: $39.99
Price: $18.59 & FREE Shipping on orders over $35. Details
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  • 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 + OBD-II & Electronic Engine Management Systems (Haynes Techbook) + OBDII Extension Cable, 5ft (144201)
Price for all three: $42.87

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Product Information

Technical Details
Item Weight3 ounces
Product Dimensions6.3 x 2 x 9.1 inches
Item model numberAL301
Manufacturer Part NumberAL301
Additional Information
Best Sellers Rank #16 in Automotive (See top 100)
Shipping Weight1 pounds (View shipping rates and policies)
ShippingThis item is also available for shipping to select countries outside the U.S.
Date First AvailableNovember 18, 2008
Warranty & Support
Warranty, Parts: Parts

Warranty, Labor: We offer one year warranty including labor and parts. The buyer is responsible for the shipping fees.
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Product Description

The MaxiScan code reader supports all OBD2 protocols, including the newly released Controller Area Network (CAN) protocol. Though it is small, it is able to retrieve same information as large expensive scanners. This code reader reviews the emission readiness status of OBD monitors and determines the malfunction indicator lamp (MIL) status as well as turns off check engine light. It comes with free CD software with over 7000 DTC definitions and is powered via detachable OBD2 cable.

Customer Questions & Answers

Customer Reviews

4.4 out of 5 stars
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See all 2,297 customer reviews
The manual/CD are easy to understand and easy to look up codes.
It's very easy to use... read your Check Engine codes, erase them and reset the Check Engine light.
Steven L. Hood
Saves a lot of hassle and time and money going to a shop to have one's car looked at.
A. Post

Most Helpful Customer Reviews

789 of 815 people found the following review helpful By Sonny on May 18, 2009
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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249 of 269 people found the following review helpful By n007 on October 8, 2010
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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182 of 201 people found the following review helpful By R. ippolito on December 19, 2009
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.
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246 of 286 people found the following review helpful By K. McLemore on June 10, 2009
The MaxiScan MS300 does read the codes and is easy to hook up and use. Functionally, it works.

However, there are some serious problems:

- As reported earlier, the CD is entirely useless - the code database does install (although install menu looks like it was written for Win98), however once that database is installed on your PC, when you go to look up P-code numbers there is no information on them - all you get is 'no data'. You are left with the product's User Manual as your sole reference to the codes.

- The manufacturer's website ([...]) does have a link for downloading the DTC codes, but it's a dead link and goes nowhere - again, entirely useless.

Please note that these issues also apply to the MS500 as they share the same CD.
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