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Old 01.06.2017, 10:30
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Vehicle Diagnostics and Options

I would like to share my recently purchased cable that connects to the vehicle diagnostics port. This enables me to see and reset error codes, warning lights, and modify any available hidden options in your vehicle. For example you can enable/disable the engine start/stop option, light settings, daytime running light settings, audio settings, infotainment system settings and more...

Compatible with Volkswagen, Audi, Seat and Skoda vehicles.

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Old 01.06.2017, 10:32
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Re: Vehicle Diagnostics and Options

Nice for you.

But Im rather more interested in my Audi
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Old 01.06.2017, 10:33
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Re: Vehicle Diagnostics and Options

What? Can you enable/disable the engine start/stop option, light settings, daytime running light settings, audio settings, infotainment system settings? Isn't that dangerous? I mean, to do this, you would have to send signals into the car, that seems like a risk for an aftermarket device... I know of systems that can only get info out of the car, which is much less of a risk. I myselF HAVE A TomTom Telematics device in my car
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Old 01.06.2017, 10:39
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Re: Vehicle Diagnostics and Options

Which HW/SW did you buy?

Tom
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Old 01.06.2017, 11:00
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Re: Vehicle Diagnostics and Options

Hello.
Connecting to the diagnostic port is very easy.
Most of the modern cars have ODBII port (usually located close to the steering wheel).
I can't tell how safe/unsafe it is, but I've tried myself with my Honda Civic and I had no issues. The main difficulty comes with the free software available which is usually not good and doesn't offer many possibilities. So you have to pay to have a decent one.
Here is more info
https://en.wikipedia.org/wiki/On-board_diagnostics

Enjoy
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Old 01.06.2017, 11:03
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Re: Vehicle Diagnostics and Options

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Hello.
Connecting to the diagnostic port is very easy.
Most of the modern cars have ODBII port (usually located close to the steering wheel).
I can't tell how safe/unsafe it is, but I've tried myself with my Honda Civic and I had no issues. The main difficulty comes with the free software available which is usually not good and doesn't offer many possibilities. So you have to pay to have a decent one.
Here is more info
https://en.wikipedia.org/wiki/On-board_diagnostics

Enjoy

ALL cars since 1996 have had to have odb2 by law then manufactures add their own systems on top, obd2 won't allow you to change anything except turn off the engine warning light, you'd need other manufacturer specific software / cable to do anything interesting
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Old 01.06.2017, 11:09
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Re: Vehicle Diagnostics and Options

Just be aware that I use to have a OBD device in my car, that a few months ago, drained my battery dead. In a almost new Jeep Grand Cherokee. The mechanic that came by to help me, had never seen anything. I now have a device that is not connected to my car through the ODB port, but directly connected to the CAN of the car.

My point is: just be aware. It really cool to get data from your car, but there might be some dangers.
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Old 01.06.2017, 13:03
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Re: Vehicle Diagnostics and Options

Interestingly the OBD2 connector is CAN based so you may not be any better off. These days most OBD" diagnostics run over CAN and as others have stated OBD specs require a minimum set of parameters to be transmitted in theory so that non-franchise garages can work out on the without having to buy bespoke hardware software.

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Old 01.06.2017, 18:15
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Re: Vehicle Diagnostics and Options

We have recently had problems with warning lights coming on for what proved to be no good reason. My question: Is it worth buying an OBD device in order to check the warning light message and before contacting a garage? Many thanks for any replies.
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Old 01.06.2017, 20:03
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Re: Vehicle Diagnostics and Options

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We have recently had problems with warning lights coming on for what proved to be no good reason. My question: Is it worth buying an OBD device in order to check the warning light message and before contacting a garage? Many thanks for any replies.
As with everything, it depends... but more likely not as useful as one may think. You might get some error codes out but often these are difficult to interpret and may not be related to the problem at hand and lead you down a wrong diagnostic path.

If you have to ask this question, it's better to go to a garage than DIY - even if you get the correct interpretation of the codes you won't be able to solve the problem yourself, and any decent garage will do their own diagnostic anyway.
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Old 01.06.2017, 20:09
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Re: Vehicle Diagnostics and Options

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I would like to share my recently purchased cable that connects to the vehicle diagnostics port. This enables me to see and reset error codes, warning lights, and modify any available hidden options in your vehicle. For example you can enable/disable the engine start/stop option, light settings, daytime running light settings, audio settings, infotainment system settings and more...

Compatible with Volkswagen, Audi, Seat and Skoda vehicles.
Does it also by any chance detect when the vehicle is on a test bench and slighlty alter the consumption and emission figures? Cause that would be way koool

Just kidding...
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Old 01.06.2017, 20:22
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Re: Vehicle Diagnostics and Options

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We have recently had problems with warning lights coming on for what proved to be no good reason. My question: Is it worth buying an OBD device in order to check the warning light message and before contacting a garage? Many thanks for any replies.
Like dandi wrote, they're not much good to you if you're not used to doing this kind of troubleshooting and repair - in which case you'd already have one.

I have used a few of them, usb, Bluetooth, and wlan, almost all of them use the same chip.

They're fine for doing a reset after an oil change, or clearing a fault code which you know for certain is a red herring, but even if you are at a level where you can do the diagnosis yourself and determine that it needs, for example, a new MAF sensor - unless you can source the parts and fit them yourself then you won't save any money, because you still have to take the car to a garage (and the first thing they will do is plug a more advanced diagnostic tool in and run a more advanced set of tests).
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Old 02.06.2017, 16:25
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Re: Vehicle Diagnostics and Options

The VAG-COM VCDS is much more than a standard OBD-II dongle, it includes the ability to program controllers in VW group cars. I also have such a cable, with the software from Ross-Tech, which I was using when I had a piece of crap Golf that broke down every 10,000km. I used it to diagnose a broken solenoid, 2 broken coilpacks, reprogram a controller when I changed the radio, and to enable daytime running lights. It has definitely paid for itself in the saved trips to the VW garage. Certain things are not possible to diagnose with a generic OBD-II dongle, as they do not record error codes or trigger the check-engine-light.

That was about the only thing I liked about the Golf - I think a similar device for my Honda would cost upwards of 1000chf and require a windows XP computer with a serial port (or a serial-usb adapter).

If anyone around St. Gallen owns a relatively new VW/Audi/Skoda/Seat and needs to do a scan or to change some settings, you're welcome to use my cable as well.
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Old 02.06.2017, 16:51
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Re: Vehicle Diagnostics and Options

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Nice for you.

But Im rather more interested in my Audi
Audi is part of the VW group. Reason why I bought the cable and software is because many options in Audi you must take the vehicle to the audi dealer to enable and disable simple setting and they charge a lot of money. I was able to customize all the settings in 1 hour for a lot less.

I enabled the rear LED light to be on while front daytime running light were on something very useful in all the tunnels...

I disabled the start stop so that its not always active by default.

I changed the convenience blinking to 5 instead of 3

enabled the read parking sensors to display in the entertainment screen while reversing

customized the windshield wiper delay and frequency

and much more. Its a simple menu and you can choose from the menu. German made software, very expensive . http://www.ross-tech.com
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Old 02.06.2017, 17:52
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Re: Vehicle Diagnostics and Options

VAGCOM is also necessary to do pad changes in the rear if the car has an electric handbrake, as you need to set the distances, and the calibration process is stupid.

This is not the typical OBDII reader that you can get on amazon/ebay for 5 bucks. This is dealer-level diagnostics.

BMW has INPA, Mercedes has Star-whatever, and VW group has VAG-COM.
There also other levels of diagnostics/coding that can access different modules in a car. For example if you want to do anything fancy with a BMW you need E-SYS that can do stuff with in-motion-video and what light comes on when, all the way to re-calibrating the traction control systems. But it doesn't have access to the engine ECU for example.

So it's a complex world full of proprietary software and processes. Everyone that doesn't know what they're doing could easily "brick" their cars which would probably be a greatly expensive mistake
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Old 02.06.2017, 17:58
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Re: Vehicle Diagnostics and Options

yes there are different levels and so for higher dangerous levels you must have an access code... the danger to cause damage is very limited with the VW system...

also the rosstech system literately has options that say click here for this unclick this for that...

[QUOTE=Don Molina
BMW has INPA, Mercedes has Star-whatever, and VW group has VAG-COM.
There also other levels of diagnostics/coding that can access different modules in a car/...

So it's a complex world full of proprietary software and processes. Everyone that doesn't know what they're doing could easily "brick" their cars which would probably be a greatly expensive mistake [/QUOTE]

Last edited by edzoom; 02.06.2017 at 19:09.
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