Autel Maxidas DS708 free update by internet

Delicately developed by the most distinguished experts of this industry,Autel MaxiDAS DS708 is a state-of-art diagnostic system that delivers more accurate, more stable, more comprehensive, easier and faster diagnosis.

The new generation platform stands out in a variety of tools by providing incredibly high performance with intuitive peration.

Right for the first time, workshops and technicians could find an OE-level diagnostic solution designed for the aftermarket.

The Maxidas DS708 is the key to gain customer confidence and boost your bottom-line.

Can you afford to be left behind?

Product Features & Functions

● Extensive vehicle coverage for more than 30 domestic, Asian and European vehicle makes;

● Deep vehicle system coverage for ALL electronic systems;

● Complete function capability including live data, ECU testing and so many others;

● Unparalleled OBDII functionalities–supports ALL 5 OBDII protocols and ALL 9 test modes;

● Automatic Wi-Fi updates available in new software releases;

● Innovative dual-processor technology for quicker diagnostics and boot-up;

● The genuine Windows CE operating system allows for more stable performances, better compatibility and expandability;

● WIFI internet capability allows for wireless access throughout the workshop;

● Internet explorer brings internet resource of your choice at your fingertips

● Advanced USB communication for faster operation and more accurate diagnostics;

● Automatic Wi-Fi updates available in new software releases;

● Extremely easy-to-us with touch-screen operation and intuitive operation;

● Extensive vehicle coverage for more than 30 domestic, Asian and European vehicle makes;

● 7 inch 800 x 480 pixel TFT color display provides better view of test results, graphs, web pages and etc;

● Unique shop tough ergonomic design features multi-layered rubber protection and strong housing;

● Intelligent memory of vehicles for easy and quick diagnosis of tested vehicles;

● Captures, saves and prints screenshots for convenient troubleshooting;

● Displays live data in text, graph and analog for easy data review and analysis;

● Records and playbacks live data to pinpoint troubles of sensors and components;

● Innovative graph merging for easy and quick detection of intermittent problems;

● Automatic WIFI Data Logging for quick and accurate technical support and troubleshooting;

● Built-in overvoltage protection keeps the instrument and vehicle from unwanted damages;

● Creative remote diagnosis for convenient demonstrationand training;

● Powered by Autel® Uni-SCANTM technology with no need for extra adaptors or “keys” ;

● Prints out recorded data any time and anywhere with Wi-Fi printing capability.

Specifications

Operating System: Windows CE

CPU: ARM9+ARM7 dual processor

Memory: Max. 4 Gigabyte SD card

Communication Interface: OBD, USB,Ethernet

Input Voltage: 8.0-32.0V power provided via vehicle battery

Power Consumption: 8W

Operating Current: 500mA

Display: Backlit, 7″ TFT (800*480 dpi) color display with touchscreen

Operating Temperature: 0 to 60°C (32 to 140 F°)

Storage Temperature: -10 to 70°C (14 to 158 F°)

Operation: Touchscreen and one rubber key (ON/OFF)

Printer Interface: Wi-Fi, USB, Ethernet

Housing: Strong plastic housing with protective rubber boot

Dimension: 282mm (11.10″)*163mm (6.42″)*60mm (2.36″)

Weight: approx. 2Kg (4.41lbs)

Autel ds708 Protocols: ISO 9141-2, K/L lins, flashing code, SAE-J1850 VPW, SAE-J1850 PWM,

CAN ISO 11898

ISO15765-4, Highspeed, Middlespeed, Lowspeed and Singlewire CAN

Contact us:

Skype: obd2works

Email: obd2works@gmail.com

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ADS9908 car Battery Tester

This circuit uses the popular and simple to seek out LM3914 IC. This IC is extremely straightforward to drive, wants no voltage regulators (it contains a in-built voltage regulator) and might be power-driven from virtually each supply. This circuit is extremely straightforward to explain: once the take a look at button is ironed, the automobile battery voltage is feed into a high resistivity resistance. His purpose is to divide one2V to 1,25V (or lower values to lower values).

ADS9908

Top five Reasons to induce ADS9908 Auto Battery Analyzer:

1. Quickly take a look at the batterys main specifications: Internal Resistance, CCA, Voltage, electrical amount, Life-span.

2. numerous standards build-in.

3. Adopt electrical phenomenon technique to test: convenient and safe.

4. Clock within.

5. Printer within, will print out testing results anytime.

ADS9908 Functions:

1. Battery take a look at.

2. System take a look at: Starter test, Charging take a look at and elevation.load.

3. Monitor the standing of the beginning system of the vehicle.

4. take a look at the amendment of the voltage once begin the vehicle.

5. endurable standards: 100-1700CCA, 100-1000DIN, 100-1000IEC, 100-1700EN, JIS.

6. appropriate for 12/24V automotive batteries&12V battery charging system.

7. optional languages: Chinese, ancient Chinese, English, Turkish, Korean, Dutch.

To buy car diagnostic tool,visit our shop obd2works,search on google, you’ll find our shop.

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BMW X3 airbag fault warning light flashes sometimes riding indoor lighting

An approximately 160,000 km mileage 2004 BMW X3E83SUV. Users report: car instrument airbag fault warning lights, cab lights sometimes flicker, front and rear wiper operation weakness, often stuck in the middle of the glass does not move.

After the pick fault content is read by ISID :50-MRS supply voltage; 8C-KOMBI moldings R; 87-KOMBIK bus; 30-GMK bus. Failure to read the content from the perspective of the detector in addition to “50-MRS supply voltage” Others are more abstract failures content, Symptom vehicle from the surface nothing seems implicated, so he decided to choose the airbag fault first, the phenomenon of exclusion. Select “50-MRS supply voltage” testing program execution, inspection program first analyzes the fault stored in the memory of the memory voltage is too low, if the supply voltage exceeds the 20s MRS is less than 9V, MR will store this fault, where MRS is the airbag The control unit or multi-occupant protection system control unit. Continue the inspection program, the detector gives a circuit diagram of the airbag system shown in Figure 1, and is recommended to check the battery voltage, battery check circuit diagram of a voltage with a voltage of 12.8V, normal. Tips for inspection in accordance with the circuit diagram of F11 MRS insurance, the insurance did not fuse. In accordance with the test plan to continue down analysis, whether between MRS supply terminal X74 of 57 feet and a ground supply voltage 9 ~ 16V, using a multimeter to measure voltage 57 between the foot and the ground terminal is only 5 ~ 8V, followed by measure the voltage X10016 22-pin terminal, F11 insurance and ground, the result is only 5 ~ 8V, it is clear that there is power failure MRS. MRS is powered by the battery through the ignition switch provides direct R block, as shown in the ignition switch in the position of a radio block diagram of the F11 is the insurance supply terminal R block shown in Figure 2. R-side airbag system not only to the insurance F11 power, but also for several systems powered A1 fuse distributor of F5 ~ F15’s. Since the F11 is only 5 ~ 8V supply voltage, and that several other insurance system is not only 5 ~ 8V supply voltage it? Measurements and inferred as, F5, and several fuses are also only 5 ~ 8V supply voltage. View schematics to find the fuse F9 is powered body basic module, and flying fuse wiper relay is controlled by the body basic module for the interior lights powered F6. Symptom several vehicles, seemingly unrelated, are actually the cause of the power supply voltage is too low skp-900.

R block is rotated by a mechanical key mechanical ignition lock, ignition switch by changing the linkage of internal contact position control, a common cause of failure is mostly inside the ignition switch contacts wear or erosion caused. To verify the empirical analysis is correct, the maintenance staff while measuring the voltage at A1 distributor, while shaking the ignition switch, then found Al multimeter measured at the supply voltage constantly varies between 5 ~ 11V, then check to make sure the ignition switch after the connection terminal is no problem, indeed the point of failure is the ignition switch.

Replace the ignition switch, troubleshooting.This story originally appeared on http://superobdskp900.wordpress.com

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How to understand car odes by obd2 scanner

I just read the news release sent over to us by our friends at ASA (Automotive Service Association) announcing that Sen. Jay Rockefeller (D-W.Va.), chairman of the Senate Commerce Committee, introduced S. 2559, a bill to expand the National Highway Traffic Safety Administration’s (NHTSA) authority to recall unsafe vehicles and increase funding for automobile safety. (Read the full release here)

Obviously, this is in response to the massive GM (and other) recalls we’ve been seeing over the last several months. But will it really improve vehicle (and occupant) safety or does it only address the aftermath? And what about the safety issues that the consumers themselves allow to happen?

If you work on cars for a living, especially in a state with no mandatory vehicle safety inspection program, you know what I’m getting at. I can’t count the number of times I’ve lifted a vehicle up in the air to find bald tires, worn out brakes and seriously loose steering/suspension components. And how many cars do you see every day that are missing one or more brake lights, or are driving down the highway with shattered windshields?

I’m not usually an advocate of government intervention, but in this case I think we need to lobby for more. We need a uniform safety inspection program across this country to protect the innocents. Hey, if someone want to drive around on bald tires with no brakes, I don’t want to hear it when they come crying after the crash. That is their individual choice and if they were driving alone on the road, I would have no problem with it and couldn’t care less.

But these drivers don’t drive alone. Their kids are in the backseat and they are driving in front, behind or beside my family and yours. Their blowout could injure others who had no say so in their choice to drive an ill-maintained car.

Driving is not a right, it’s a priviledge. If they can’t afford to keep their cars safe, then I’m sorry…that’s too bad. Take a bus instead. And regulation of some sort is needed to make sure that the roads are safe for everyone. At least as safe as we can make them.

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创业者如何让车联网落地

6月11日,北京国家会议中心,以“融合 开放 智能”为主题的2014地理信息开发者大会(WGDC2014)在此拉开帷幕。地理信息开发者大会自2012年起开始举办,三年时间里,伴随着中国地理信息产业的快速发展,已经成为地理信息领域最具影响力的技术创新盛会,与跨界融合、国际交流的重要平台。

在6月12日下午的创业与投资专场上,创新工场合伙人赖晓凌发表了一段精彩的开场演讲。以下是演讲实录:

赖晓凌:我今天选这个主题“创业者如何让车联网落地”作为切入点,因为创业的时候会盯着一个新技术或者新概念想着去创业,但创业需要一个载体,公司的价值需要落地。

以前几年的易道用车为例,它做的是商务代驾,如果这家公司没有地图、手机和定位,那就不可能做这个生意。第二个是丁丁地图,我从前曾参与投资的一家公司,从2009年以后转移到手机上,三个月的发展超过了过去三年的发展。

2008年前,人们会常常谈起冲浪、虚拟世界、网上互联网。而如今,回想起当时,那真是一个虚拟的世界。如今正是因为有了地图和手机,它把线上和线下无缝地交叉,才真正把一个虚拟世界和有形世界结合在一起。这里有很多机会,我讲跟车联网相关的方面。

什么叫车联网?几年前,国家提出车联网的发展计划之后,涌现出许多家公司。比如Telematics服务以及导航服务的公司很多,一辆汽车无论是前装还是后装,都需要一个导航仪或者是GPS装置。理论上,GPS服务商、提供商也是属于车联网公司。近年来,伴随着移动互联网的迅速发展,手机变成一种无所不能的设备,原来PC上能干的事情它都能干,PC上不能干的事情它也能干。因此,这两年出现最多的就是汽车和手机的结合,也是现在车联网最热门的地方。

汽车厂家本身是一个非常保守的群体,无论哪家公司都是这样。当前,特斯拉的出现,带来了一些变化,但不知道是否能彻底改变汽车厂商的局面。而对于OBD,它已经非常火爆,那些理论上的车联网公司在做什么?

第一种是车联网监控,就是通过给车装一个设备监控车辆的变化,主要是用于行业解决方案或者安防领域。最大的问题是,整个市场非常分散,各地区或者各个行业,或者各个公司,基本上都是一些独立的服务商或者独立的公司,很难形成一家市值很大的公司。做的好,可能每年也就几千万的净利润,其余的大部分就是几百万。

第二种就是远程诊断,2007年以后,中国市场所有的车辆上线之前,必须要有OBD2的标准,这原本是供给4S店或者汽车厂家供他们检测、维修车辆的一个标准,后来中国把它变成一个远程监控,通过手机或者通过加SIM卡等手段,能够远程诊断车辆的一些运营状态。但可惜的是,今天车辆集成度越来越高,一般情况下车辆不会发生问题,因此,远程诊断听起来挺炫,但时常感觉不到它的存在。

第三种就是破解车辆的总线系统,逆向控制车辆,比如远程开关车门,远程检测车窗关没关的事。很多人在做远程逆向控制,欧美做互联网的人也希望做一些事情,比如P2P租车,也是通过逆向方式的控制。目前,这个领域有几家公司主要以解决方案的方式提供服务,包括腾讯现在做的路宝。大家希望通过OBD的能力把所有的行车轨迹和任何参数传到厂商的中央服务器,然后做大数据分析,把把这些数据卖给保险公司、主机厂商等。

但这要问“先有鸡?还是先有蛋?”因为OBD没有分析数据,根本没有意义,但是分析起来单靠某一个设备也有一定的难度,只能希望车辆能够联网,但是车本身就是网络中的一个结点,这完全是两个概念。

将来汽车互联网会不会变成互联网的一个子集?我认为完全有可能,但是走到这一步需要几个事情克服。一来必须要有一个相对稳定、开放和友好的操作系统。这个操作系统的安装量能达到一定的用户数。比如在塞班时代,根据操作系统划分,每一个子操作系统最多也就是几千万,一般也就只有几百万用户,如果让程序员或者让开发者来去开发应用往往得不偿失。二来,如果有一个好的操作系统,构建一个良好的生态圈,能让生态圈上的开发者真正挣到钱,必然会吸引来很多开发者,正如目前,iOS上有上百万人开发,安卓系统也是,所以能产生大量的应用。它的操作系统非常方便,生态圈非常完善。最后一点非常关键,因为它的用户基数够大,用户使用体验一致,所以一个APP进入市场成本非常低。如果用户上亿安装了,初始流量都很便宜,这就无需打很多广告,就能找到初始用户。

只有真正做到这几点,将来汽车互联网才有可能出现,但现实情况面临很多挑战,汽车也不例外。李书福说,汽车就是四个轮子加一个沙发和外壳和发动机,汽车的集合度和总程模块化就这么简单,其实比手机还简单。但汽车里面有发动机总程,拆不下来,你肯定会买一个总的发动机总程。因此,汽车本身模块化越来越高,它的零配件变得越来越小的方向发展了。但是目前,一辆汽车上有好几个ECU,刹车系统有一个单独的ECU,娱乐导航系统也是一个独立的ECU,对ECU要求很不一样,比如刹车系统和发动机系统,对响应时间和速度和可靠性,有很高的要求。但是导航和娱乐系统要求并没这么高,像CarPlay和OAA,都希望往移动系统中有所提升。

我认为只有将来把这些ECU提升到一定的阶段,更加集成化,汽车刷程序才变成可能。汽车要克服软件和硬件两方面目前的一些限制,如何克服?如何让汽车成为互联网的结点,最直接的方式就是重新发明汽车,典型案例就是特斯拉。今天的特斯拉跟以前汽车已经完全不一样了,它比所谓的四个轮子,几个沙发一个壳子还简单,它上面就是一个电池板加上一个外壳和座椅,听起来很简单。特斯拉已经做到了刷机程序。上回去美国的时候,跟马思克说死机了怎么办,他回答说重启就行了。无人驾驶汽车多少年能实现?今天技术发展非常快,应该很快就会实现了。过去40年的发展赶上了人类历史上将近二三百年的发展,这是一个加速发展的时期。

这么多难题带来的就是创业机会,我归结为几种:

1、发明互联网汽车。我认为中国人也能生产出来,因为中国的汽车行业这么多年来没有多少核心技术,但是中国制造很不错,基础非常好。利用现有新技术和新能力,或能实现。易道用车的周航等人发起一个联盟,专门去做开源汽车,我给它4颗星。

2、ECU加娱乐系统,方便适配尽可能多的汽车硬件,让刷机重启变成可能,我给它5颗星,但确实有难度,我比较悲观。

3、更好的嵌入式车载信息娱乐系统,也就是把车右手边的那块屏幕做的更好。我记得2009年的时候,有一种说法是,手机可以控制世间的一切,控制家电、家里的门和很多东西,但我们越来越觉得手机和汽车还没有融合到一块,能不能把这块系统先做了?就像特斯拉的那块屏幕,如果做了系统,那就意味着与可以汽车系统的总线系统进行对接,我给它打四颗星。

4、CarPlay和OAA,这是未知领域,很多汽车厂商已跨入其中。而CarPlay它就是苹果手机的投射,没有解决汽车互联网的问题,只是解决了联网的问题。

5、为汽车驾驶员开发一个更好的应用,为汽车开发而不是为手机开发。真正做事会带来价值,无论汽车怎么发展,只要有用户就会有市场。因此,要真正地为汽车驾驶员开发应用,而不是为手机开发应用。

6、处于中间状态的OBD等方案。因为我觉得这是一个过渡方案,而时间很短。如果真要做这个中间方案,还不如做一些车上必备的东西,比如说行车记录仪,其实可以将行车记录仪做得性能更好一些。为什么视频网站上的视频没有人是从车上录的?因此,中间的方案也有机会,但要让大家参与分享才行。

我之前提到的一些行业应用为什么做不大?就是它不够好玩。如果创业者有一个很高深的技术,一定要想到用什么方法承载它,比如易道用车用了定位,也用了LBS,但是它从来不说这些,但如果没有这些技术,就做不来,易到用车只说是一家租车公司。我想讲的就是这些,谢谢!

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Second-generation OBD-II market to grow

MOUNTAIN VIEW, Calif. (July 2, 2014) — The entry of device makers, app developers, telecom providers and system integrators into the automotive aftermarket will power the growth of second-generation on-board diagnostics, or OBD-II, services to a $1.6 billion industry across North America over the next five to seven years, according to Frost & Sullivan Inc.

The research firm predicts “parts and service suppliers will soon scramble to align themselves with OBD-II subscription providers to avoid being left out of the ‘connected vehicle’ space.”

With OBD-II, consumers can receive notifications when a part is failing, schedule to have their vehicle repaired at a nearby garage or even purchase their spares online. Once fitted into the car, the OBD-II receiver can transmit data through embedded cellular features or via Bluetooth/Wi-Fi interaction using the driver’s smartphone.

The independent aftermarket must act soon because of the high installation of embedded telematics systems designed to route vehicle owners back to the nearest franchised dealership, presenting a potential threat to distributors, service chains, independent repair facilities and parts retailers, according to Frost & Sullivan.

OBD-II systems have been a requirement for all light-duty cars and trucks since the 1996 model year.

Frost did not specify the size of the market or what percentage of growth it expected to see in the next several years.

The Mountain View-based research firm did say that with the growth of telematics platforms in modern vehicles capable of sending and receiving data, OBD-II has spawned a device and service industry allowing consumers to purchase user-based insurance, monitor their driving behavior and track their car or truck in the event of a theft, among other possibilities.

Smartphone app developers are also becoming more active, with programs using a vehicle’s Bluetooth receiver to transmit data collected from the growing network of sensors and computers found on modern automobiles.

User-based insurance (UBI) accounts for about 90 percent of total OBD-II services revenue, according to Frost. However, a wide range of fleet management services—including prognostics, driver monitoring and vehicle tracking, among others—will eventually propel the growth of OBD-II among companies, as well as consumers.

Major developers, including Danlaw, Delphi, Voxx International, CarShield, Automatic, Zubie, Carvoyant, Dash Labs and Mojio, are creating new business models and subscription services to differentiate themselves, Frost said.

The biggest challenge facing solution providers are the OEMs, which have a head start with products—such as General Motor Co.’s OnStar and Ford Motor Co.’s SYNC systems—that already have gained acceptance among tech-savvy drivers.

As of now, devices are priced around $100 for consumers, with subscription fees ranging from $5 to $10 per month, Frost said

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OPTIMA Presents Photo of the Week: King of the Desert

Desert Dawg’s ’09 Ford F-150 FX4

Milwaukee, Wisconsin-based OPTIMA® Batteries is a proud member of the Johnson Controls Inc. (JCI) family. OPTIMA® Batteries’ premium products deliver supreme performance and reliability. Their unique SPIRALCELL TECHNOLOGY® gives OPTIMA® Batteries more vibration resistance and increased cycle life compared to traditional batteries. OPTIMA® also offers the industry’s finest digital battery chargers. With an easy-to-read, bright, backlit LCD gauge that displays battery charging, fill rate, mode settings and fault messages, these chargers offer one of the best user interfaces available in the consumer market.

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Make travel worry-free maintenance of automotive shock absorbers Troubleshooting

The role of shock absorber is to ensure that when cars with adequate stability, and shock absorbers with health or life of the vehicle has a very important relationship, so each owner should understand the relevant knowledge of some of the shock absorber, and when the shock absorber failure should be how to overhaul.

Check that the damper in good condition:

1 so that the poor condition of the car on the road after driving 10km road parking, touch shell shock absorber, if not hot enough, indicating no resistance inside the shock absorber, shock absorbers do not work. At this point, you can add the appropriate oil, then test, if the shell fever, compared with an internal shock absorber oil, should add a little oil; otherwise, indicating damper failure.

2 Press firmly bumper, then release, if the car has 2 to 3 times jump, then the shock absorbers work well.

3 When the car slowly driving and emergency braking if the car more violent vibration, indicating a problem with the shock absorber.

4 Remove the shock absorber to be upright, and the lower end of the connecting ring in the vise clamp, pull compression damping lever several times, then there should be a stable resistance, pull up resistance should be greater than the downward pressure when resistance, such as resistance to unstable or no resistance, may be short of oil inside the shock absorber valve parts or damaged parts should be repaired or replaced.

In determining the shock absorbers have a problem or failure, it should first check whether the shock absorber oil spills or traces of old oil spills.

If there is no oil leakage phenomenon shock absorbers, shock absorbers should check the connecting pins, connecting rods, connecting hole, rubber bushings and other damage, sealing off, break or fall off place. If the examination is normal, should be further decomposed shock absorbers, check with the gap between the piston and cylinder is too large cylinder with or without strain, the valve seal is good, valves and valve seat are tight fitting and less Zhen’s done spring is too soft or broken, take grinding ways repair or replacement under the circumstances.

Further, the damper in actual use will be a beep failure, which is mainly due to the damper spring, frame or shaft collision damage or loss, and a cushion cylinder deformation damper dust, oil lack of other causes, reasons should be identified, to be repaired.

After the shock absorber during the inspection repair should be carried out in a special test bench performance tests, when the resistance frequency in the 100 ± 1mm, its resistance to stretching and compression stroke stroke should be specified.

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Mercedes is giving budding filmmakers the chance to direct James Corden in new #CLAstory online film

A new initiative from Mercedes is using the four-door CLA coupe to help inspire fledgling filmmakers.

Called the #CLAstory and run via a microsite of the same name, the social media-led programme is inviting budding directors to contribute scenes for an online film starring actor and writer James Corden.

Three high-profile users of picture sharing site Instagram have provided the basic outline of the story, each having individually collaborated with Mercedes to create their own short film. These separately form the beginning, middle and end of the storyboard, leaving a total of six scenes missing and in need of filling.

Anyone can submit an entry to Mercedes UK’s Instagram channel for consideration, with a winning entry selected for all six of the segments awaiting completion. Following this, an overall winner will be determined by a public vote, and the successful film’s creator will be offered the chance to direct comedian James Corden in their #CLAstory.

He’ll star alongside the Mercedes CLA AMG Sport, and the end product will appear online on both the campaign’s dedicated website and social media. The successful filmmaker will also receive a Go Pro camera, as will the five runners up.

The final submission date for entries is July 6, shortly after which voting will open to decide the Grand Prize winner.

obd2abc

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Who moved my car to explore the safety car networking

Previously, the car is isolated, physical isolation, and therefore difficult to remote hacker intrusion inside the car computer (ECU), unless physical invasion, and this is the high cost of crime needs. With the Internet’s evolution, when golo3 this car networking products through OBD (On Board Diagnostics) diagnostic socket inside the car ECU networking, remote network attacks by the car is no longer a suspect. It can be predicted that once the popularity of car networking products, cars were attacked on actual cases and more and more will appear.

Just look at the cars on the highway are artificially controlled engine suddenly stalled, will be like a finale? You scared yet?

An OBD diagnostic seat and topology ECU

Before the safety car networking discussed in detail, first we have to understand the next OBD diagnostic seat, below the SAE J1962 standard definition of OBD diagnostic seat:

ECU

OBD diagnostic seat is one that contains the female 16pin, pin definitions given in addition to the figure, the other did not give the pin by car manufacturers own definition. ECU different communication protocols may use different pin, KWP (key word protoctol) keyword is used in the 7th protocol pin or 15-pin, the most common 500kbaud of iso15765 protocol (high-speed CAN) uses 6 No pin and 14 pin. OBD diagnostic socket is generally located below the steering wheel, different models may not be the same as the specific location, the following figure shows the specific location of the Toyota Camry 2011 classic version of OBD diagnostic seat:

OBD

Next we need to understand the topology between the ECU and the ECU. ECU (Electronic Control Unit) electronic control unit, the popular saying, it is actually used to control the number of records or change the status of the car, or ARM microcontroller chip. Now, there will be general automotive interior dozen to several dozen ranging ECU, ECU different charge different modules, such as the engine control module (PCM) will accept the sensor signal, through complex calculations to control the supply of fuel, Air rationing (electronic throttle), fuel injection and ignition timing, intake air pressure adjustment, but also according to temperature, load, knock, combustion conditions and other factors to determine the compensation control engine. According to different functions, we can put ECU into power, body, chassis, other other categories. The following table lists the high profile of the 2011 classic version of the Camry some ECU module.

In addition to automotive interior ECU, there will be a large number of sensors and actuators and other components, through their joint coordination complex intelligence operations. ECU and then the ECU, ECU and other components is how to communicate it? Topology is as shown between the various components of the vehicle interior

Actual situation more complex than the above figure, there are also differences between the different models, may also occur between the various components are connected directly, the whole principle is about the same, equal to connect all components on the CAN bus. CAN bus with low cost, high bus utilization, physical characteristics and reliable fault tolerance, high-speed transfer rate. It is based on a broadcast format, meaning that any node on the same bus to the bus message, other nodes on the bus can receive the message, then the message according to the head to determine whether a message is sent to their own . Accomplished through a gateway between different baud signal adaptation bus.

OBD II diagnostic socket by what we can do

We know OBD diagnostic seat is designed to be used in automotive diagnostic, it is the only interface to interact with the outside automotive ECU, that we can do auto diagnostic equipment can do, let’s take a look at the diagnostic line with market requirements instrument should have the function:

1 automotive ECU can read information, such as 17 vin code, ECU hardware information.

2 can read the current state of the car, such as current speed, tire pressure and so on.

3 can read fault codes of the car, the car quickly locate the fault location and clear fault codes.

4 cars be able to conduct a pre-set number of actions tests. Such as window lift, etc.

5 In addition to these basic diagnostic functions, may also have the power brush, odometer changes, key match, airbag reset other complex special features.

In addition, we know that the form is based on the CAN bus to transmit the broadcast message and when the message is sent to the CAN bus, the ECU receives this message is unable to determine from which node the message is sent, i.e., the message does not contains the source address or destination address, the message header is just an identifier, ECU is only based on the identifier to identify whether it is sent to their own. This design flaw will naturally lead to message forgery and spoofing attacks. OBD diagnostic seat as a node on the bus, not only to monitor the CAN bus at the news, but also to forge a message (such as sensor messages) to deceive the ECU, so as to achieve the purpose of changing the state of the car behavior.

Taking these two cases, we can put a message on the CAN bus is divided into the following two categories:

1 message communication between diagnostic and automotive ECU called a diagnostic message.

2 messages for communication between automotive interior components called inside information.

Any kind of message sequence defined above by carefully constructed bus, a malicious attacker could change state sent to the car.

Here you can enumerate the consequences brought about several attacks and attacks. For example, a malicious attacker can send a message through a sequence of body systems to unlock car doors and trunk, so as to achieve the purpose of stealing property owners; another example, an attacker can construct a sequence of messages sent to the OBD diagnostic seat to force the vehicle to run on high-speed turn off the engine, so as to achieve the purpose of the car crash.

Three ways to attack the car networking

An element of any communication between the elements and the OBD car from the cloud server networking products, mobile APP, a box of three basic elements, attack them, are able to drive networking devastating blow. I include here a few points:

1. Diagnostic data logic invasion cloud service side, the service side of tampering, to change the behavior of the car purpose

2. Informed communication logic between the phone and the box APP through reverse engineering, pseudo-vehicle networking products resulting sequence of messages sent to mobile phone APP box malicious.

3 attacks via WIFI, Bluetooth communication channels and so on….

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