Touareg: 2004 V6
Join Date: Sep 2012
Second Vehicle: too many to list
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Did scan and no codes but will do it again. I checked every fuse in the car. What is frustrating is the lack of continuity between the cards that are supposed to list the fuses and the actual fuses. The forum says that the pumps are run by fuses number 13, 14 and 15. I do have those three fuses but they are not labeled on the cards and in fact there is nothing associated with the fuses that even mention fuel pump. So without the forum there is no mention on the fuse cards, the fuse holders or the numerous books that come with the car there is no way to associate any fuse with fuel pump. The door does show as open on the Dashboard when it is open. The number 404 relay shows an incomplete wiring diagram. I am guessing that the primary circuit is contact number one and two with number two showing 12 V. The nonstandard diagram doesn't give a clue how power gets to the appropriate contact, whichever it may be, three, four or five. It would sure help to know which contact receives the 12 V for the secondary and which of the remaining contacts run to the fuel pump. I will do a continuity test on the line to the fuel pump connector.
On another subject, I was the victim of the syndrome wherein both cooling fans continue to run after shutting off the ignition until the battery goes dead. Per the forum, I took out what I believe to be a perfectly good and strong battery supplying 14.7 volts and replaced it with an AutoZone battery and the few times I got to run the car before the fuel pump quit, the fans worked as normal. I now am left with the only major error message being the airbag is inop. The new battery didn't solve that one. I read that this is a common fault and I should hardwire the lines that currently go through the connector. Is that the big red connector in the assembly that sits beside the battery? I considered pulling out that connector, clipping the wires and using new connectors but I thought it to be safer to pull the fuses that protect the airbags. But of course there is no indication anywhere where those fuses may be, if there are any. My question is: do I need to pull the airbag fuses, if I can find them, before I clip the wires and reconnect them and is the connector that I need to replace the big red scary looking one?
I have owned several hundred different vehicles and I place the Touareg very near the top of the best cars I have driven. But after a couple years with this creature I am becoming more and more disgusted with the details of the machine. I have worked with wiring and electrical things all my life including vehicles and aircraft, private and military and I know my way around fairly well. But when a manufacturer can't even label the fuses on their power boards I consider that to be totally disgusting. After reading some of the horror stories other people have encountered I'm afraid to keep the darn car. I just traded in my VW Passat and I'm starting to cast a wary eye on the Touareg. When it all works, it's an exceptionally great car. When something doesn't work, even the dealer is stumped. I recently made a list of fairly easy items that needed to be attended to and took it to the nearest big VW dealer which came highly recommended to me. After three days they did nothing more than clear codes and sent me on my way. So I fixed most of the items myself but cannot get rid of the airbag fault. They said they checked the connector under the seat and everything was fine and after that they cleared the codes. I didn't even make it home before the airbag fault light came back on. They said there were 642 sensors in this car. I believe the task is like keeping 642 wives happy all the time; never gonna happen. If I could find 640 of them I would snip them out. The happiest day of my recent life was when I figured out how to turn off the flat tire indicator. The only time that I wasn't getting a low tire indication was when I was 45 miles out in the boonies and my tire actually went flat. The low tire indicator didn't say a word.
Thanks for the help and I will finish the continuity check. If you know which contact in the relay is supposed to send power to the pump, that would allow me to check out that part of the equation. I suspect that's where the trouble lies.