VAG-COM Frequently Asked Questions -- Page 3

3.1  Do I need an Interface Adapter?

Yes.  The ISO-9141 port in your car is not directly compatible with any standard PC port.  The ISO-9141 port in your car is somewhat RS-232 like, but you can't just wire up a cable -- you must put electronics in between to allow a PC to communicate with the car.   We offer several complete packages consisting of an  Interface Adapter, the full-function version of VAG-COM, free updates and unlimited tech support starting at $229.  

3.2  Can I use an Interface adapter that came with another software package?

Current versions of VAG-COM (versions 500.x and newer) are not compatible with 3rd party interfaces at all, even in shareware mode and vehicles that use CAN-Bus diagnostics require a genuine CAN Interface. To use the latest version of VAG-COM, you need to use a genuine KEY- or HEX- series Interface purchased directly from Ross-Tech or from one of our distributors.

Any interface that works with VWTool or VDS-PRO should work with Release 311.2 or older versions of VAG-COM.   In addition, the ISO-only interface adapter that Alex Peper ships with his Vehicle Explorer OBD-II software package will work with versions up to 409.1.   Alex's "combination" adapters will not work with VAG-COM.  Most other "OBD-II" adapters will not work and ones that use ELM chips will definitely not work.    If you have some other adapter, simply try it, you can't hurt anything.  Of course, if you have difficulties using VAG-COM with that adapter, you'll need to contact your hardware supplier for support.

3.3  Can I buy an Interface adapter somewhere else?

Current versions of VAG-COM (versions 500.x and newer) are not compatible with 3rd party interfaces at all, even in shareware mode and vehicles that use CAN-Bus diagnostics require a genuine CAN Interface. To use the latest version of VAG-COM, you need to use a genuine KEY- or HEX- series Interface purchased directly from Ross-Tech or from one of our distributors.

You may find vendors that are willing to sell interfaces that they claim are "compatible" with certain older versions of VAG-COM.    If you buy an interface from a 3rd party, please do not expect us to provide start-up support.  If you can get it to work to your satisfaction using a currently supported shareware version, we'd be happy to have you register the VAG-COM software with us for $99 and will then provide support for the functionality of the software -- but not for connection problems.

Notes:  (Caveat Emptor!)  

● We've had numerous reports of problems with 3rd-party USB interfaces.    The USB drivers that we include  with VAG-COM do not work with 3rd-party interfaces.     In order for a 3rd party USB interface to work at all, the vendor must supply a USB driver for the device.    Almost all 3rd party drivers emulate a Serial port.   This is intrinsically slower than directly accessing the interface via USB.   It may also cause difficulties connecting  or unreliable sessions with some control modules.

● We've had many reports that certain 3rd-party interfaces (Serial as well as USB) do not work properly with some control modules.    If you have a 3rd party interface, please make sure it works with all the control modules in all the cars you're planning to scan before you register. 

● Windows Vista: As explained in FAQ entry 1.14, we only support the use of genuine Ross-Tech Interfaces using current versions of VAG-COM for use with Vista.

Again, If you buy someone else's interface and can't get it working, contact the vendor for support!    Of course if you buy one of our complete hardware/software kits, we will provide start-up support as well as free updates for at least one year from date of purchase.

3.4  Can I build my own Interface Adapter?

Current versions of VAG-COM (versions 500.x and newer) are not compatible with 3rd party interfaces at all, even in shareware mode. To use the latest version of VAG-COM, you need to use a genuine KEY- or HEX- series Interface purchased directly from Ross-Tech or from one of our distributors.

There are a number of websites with plans and schematics that claim to work with older versions of VAG-COM.   However, we will not provide links to them, nor do we sell connectors or parts.   We do not have the time or inclination to help people debug their home-built interface adapters via e-mail or over the telephone.   If you choose to build your own adapter,  that's fine -- we have no problem with that.  Just don't expect any assistance from us until you have VAG-COM talking to your car in shareware mode. We have reports that some 3rd party Interface designs do not work correctly with some control modules.    If you can get your home-made interface to work to your satisfaction using a currently supported shareware version, we'd be happy to have you register the VAG-COM software with us for $99 and will then provide support for the functionality of the software -- but not for connection problems.  Of course if you buy one of our complete hardware/software kits, we will provide start-up support as well as free updates for at least one year from date of purchase.

3.5  Why does VAG-COM require Activation?

All of our Current Interfaces  have Activation built-in so users never have to worry about Activation, De-Activation, etc. 

However, VAG-COM versions prior to 5xx.x will also run through "dumb" interfaces which are not particularly difficult to make and we would like to get paid for our work!  The reality is that there many people in this world that just won't pay for software unless they have to.   We've invested a large amount of time and expense in developing this software, and we're trying to make a living with this product.  Furthermore, we're trying to sell it at a price that makes it affordable to everyone.   The activation scheme is intended to ensure that we get paid by every user, not to make life difficult for registered customers.  

3.6  What if I need to run VAG-COM on more than one PC?

Purchase of a VAG-COM software license entitles the buyer to simultaneous use of the program on only one PC. If you have a need to run VAG-COM on more than one PC, you should buy one of our Current Interfaces (which have Activation built in).  Existing registered customers are eligible for a Upgrades to our newer interfaces.  

3.7  How do I permanently move VAG-COM from one PC to another?

All of our Current Interfaces  have Activation built-in, so you can download and install VAG-COM onto as many PC's as you'd like, so VAG-COM is fully Registered and Activated once you test it on a car.

If you have a "dumb" interface that does not have built-in Activation see this page: How do I permanently move VAG-COM from one PC to another?

3.8  What's the De-Activate button for?  Why would I want to do that?

All of our Current Interfaces  have Activation built-in, so there is neither a need or a choice to De-Activate.

If you have a "dumb" interface that does not have built-in Activation see this page: What's the De-Activate button for? Why would I want to do that?

3.9  Why has VAG-COM become De-Activated on its own?

All of our Current Interfaces  have Activation built-in, so VAG-COM should always be Fully Activated once it has been tested on a car. If you have a Current Interface and VAG-COM has become De-Activated, please contact us.

If you have a "dumb" interface that does not have built-in Activation see this page: Why has VAG-COM become De-Activated on its own?

3.10  Can I sell my VAG-COM System to someone else?

You can sell the Interface, but the software license and support are not transferable.  

If you have a "dumb" interface and the purchaser wants the full-function version, he will have to register as a new user for $99. 

All of our Current Interfaces act as "dongles" for VAG-COM, so the software should be fully functional on any PC that meets our requirements.  However, we only provide support to the original purchaser.  If you purchase a second-hand "dongle" Interface and want to be a "registered user" and get technical support, you'll still need to pay $99 to register. 2nd hand owners of Ross-Tech Interfaces are not eligible for any of our Trade-In offers.

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