View source for Audi CAN Gateway using CAN protocol

__FORCETOC__
This page applies to MLB based Address '''19-CAN Gateway''' modules using the CAN protocol.
* It was initially installed in MLB based models such as the Audi '''A4''' ''(8K)'', '''A5''' ''(8T)'' and '''Q5''' ''(8R)''. 
* When models such as the '''A6''' ''(4F)'' and '''Q7''' ''(4L)'' were facelifted (in roughly mid 2008) Audi began installing this generation control module into those vehicles.
** The easiest way to identify if a A6 or Q7 from this era has the newer configuration is to confirm Battery Management was interrogated into the 19-CAN Gateway based on the Component: GW-BEM
** The information on this page does NOT apply to pre-facelift A6 or Q7 models using a separate 61-Battery Manager control module.


There were several revisions over the years but the installed CAN Gateway can be identified by evaluating the data in the Auto-Scan.  The Component field will include '''GW-BEM''':
 Address 19: CAN Gateway (J533)       Labels: 4F0-907-468.CLB
     Part No SW: 4F0 907 468 F    HW: 4F0 907 468 F
     Component: '''GW-BEM''' 4CAN-M H06 0024

 Address 19: CAN Gateway (J533)       Labels: 8T0-907-468.clb
     Part No SW: 8T0 907 468 T    HW: 8T0 907 468 K
     Component: '''GW-BEM''' 4CAN-M H09 0105

 Address 19: CAN Gateway (J533)       Labels: 8T0-907-468.clb
    Part No SW: 8R0 907 468 P    HW: 8R0 907 468 D
    Component: '''GW-BEM''' 5CAN-M H11 0060 

Beneath the master module details the LIN slave information Component: '''J367-BDM''' will be shown as well when coding is correct and everything is communicating properly.


== Coding ==
Coding information is available while connected to the vehicle with VCDS using the '''[http://www.ross-tech.com/vcds/tour/recode_screen.html Long Coding Helper]'''.
It is strongly recommended to save a complete [https://www.ross-tech.com/vcds/tour/autoscan.php Auto-Scan] prior to any coding modification.
* Note, alternator/charging system problems can occur when the module is coded incorrectly.  In some instances [[03041 | 03041 - Energy Management Active]] may be stored due to charging system problems related to incorrect coding.

== Installation List ==
Because Coding does not cover the installed control modules it is necessary to use the [https://www.ross-tech.com/vcds/tour/installation-list.php [Installation List]] function when adding a module.  This necessary when retrofitting a Trailer module (or similar) to the vehicle.

== Adaptation ==
Documented Adaptation channels are available in the form of a drop-down menu when connected to the vehicle with VCDS.
* Battery Coding is the most common Adaptation function. See the ''19-CAN Gateway using CAN'' section on the [[Battery Replacement]] page.

== Battery Replacement ==
Refer to the above mentioned [[Battery Replacement]] page.

== Replacement ==
Component Protection can only be learned/disabled using the Factory Tool in Combination with an online Connection with GeKo access.  This can be completed online at the dealer or by using a Pass-Thru (J2534) device per the notes on our [[Official Factory Repair Information]] page.