I have spent hours looking through the internet now as I have ordered myself an RCD 510 to replace my old RCD300.
I have a 2006 Plate B6 Passat and am aware that this will cause battery drain. I have just taken out my climatic controls to check and can confirm I have a revision 'C' Can Bus.
Now I have read up that to avoid battery drain that it must be revision "L" or later, however I have also read that the "C' can receive a Software update from 0040 to 0048. I have found a local VW Specialist who is prepared to do the Software update for £70+VAT however really don't want to waste £70 if it's not going to work and I'm going to need to buy a ned can bus as well.
Can anybody confirm this for me and/or have any experience?
I have found this quoted on the internet
If I am reading that correctly - it seems the easiest fix would be a software update?All one needs is a Gateway that from factory was installed with a RNS510 or RCD510, that gives you an idea what versions you should look for.
For the Golf/Jetta based models the first Gateway used in combination with RNS510/RCD510 (and similar) was according to my sources 1K0-907-530-L @ 0052 while for the Passat it was 3C0-907-530-H @ 0142. Usually the version out in the public may not even be the first which have the issue fixed, so if one looks a little further the battery drain issues are known in combination with new/replaced trailer hitch modules.
VW describes those issues in TPI 2017949, the fix is the control module software update I already mentioned earlier. All 1K0-907-530-* Gateways prior to Index K would be updated to 1K0-907-530-K @ 0178 while 3C0-907-530 and 3C0-907-530-C would be updated to 3C0-907-530-C @ 0048 and 3C0-907-530-B @ 0040 would be updated to 3C0-907-530-B @ 0048. We have done exactly these updates to numerous vehicles and this is the by far easiest and probably even cheapest solution.
Many Thanks