Economy - Longevity - Performance
The #1 Source of TDI Information on the Web!
Forums Articles Links Meets
Orders TDI Club Cards TDIFest 2015 Gone, but not forgotten VAG-Com List Unit Conversions TDIClub Chat Thank You

Go Back   TDIClub Forums > TDI Model Specific Discussions Areas > VW B5 Passat TDIs

VW B5 Passat TDIs This is a general discussion about B5 Passat(>98 (2004-2005 in North America)). Non TDI related postings will be moved or removed.

Thread Tools
Old August 21st, 2011, 16:57   #31
Join Date: Aug 2011
Location: Orlando, FL

Wow! There is a second relay panel behind the primary relay panel. There are three more radiator fan relays there. Two are labeled 373 and one is 370. There is also a very large (1+ inch across) blade type 40a fuse (below and left of the 370 relay). After finding and testing the three relays, I found the fuse. Well, that was it. Apparently when the fan died, it overheated and took out this big fuse. The #25 fuse on the main cabin panel however did not blow. Looks like I might have this fixed.
swacapt is offline   Reply With Quote
Old August 22nd, 2011, 02:00   #32
Veteran Member

glad I was able to point you in the right direction...
"You can't argue with a fool..."
thundershorts is offline   Reply With Quote
Old September 21st, 2011, 11:48   #33
Join Date: Apr 2005

Originally Posted by Quest4TDI View Post
I'm having similar symptoms as the original poster.

AC seemed to suddenly quit working from one day to the next, based upon what my wife has described to me (I rarely drive the Passat).

1) I pulled the 384 relay, and a quick visual didn't show any obvious signs of problems. May need to pull it again and check with a magnifying glass (middle-age eyesight sucks).

2) Check for operation of the passenger-side electric fan, and it comes on with the AC on.

3) Checked the AC fuse (fuse #25 if I recall correctly) and that fuse is fine.

4) Inside temperature display is operational

Any other diagnostics I should perform before I either decide to buy a replacement relay and easter-egg it to see if it does the trick, or before I go to an AC specialist to have the whole system checked? I don't believe we've ever had the freon recharged, but the sudden change would lead me to believe that it's not the freon unless there was a catastrophic failure.

If the compressor turns out bad, it looks like I should have the following replaced:
- the compressor (Sanden or Denso) (is a Sanden-Behr compressor the same brand?)
- the drier

- is there an orifice tube to replace?
- is there an expansion valve to replace?

384 relay bought from 1stVWparts solved the problem. AC is cold again.

Plan on inspecting my old relay with a magnifying glass to look for bad solder joints.

'05 Passat TDI wagon
Candy White / Grey Leather
Leather package with wood
17" Factory Alloys
Quest4TDI is offline   Reply With Quote

Currently Active Users Viewing This Thread: 2 (1 members and 1 guests)
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
WTB: 03-05 passat sedan/wagon or jetta wagon reynolcj TDI Cars for Sale/Wanted 4 February 27th, 2010 11:32
Considering trade: Passat Wagon 4Motion for my '05 Passat GLS TDI Wagon wsalopek TDI Cars for Sale/Wanted 22 January 23rd, 2007 08:51
WTB TDI wagon: 04-05 Passat or 03-05 Jetta dirty dan TDI Cars for Sale/Wanted 3 July 16th, 2006 20:05
05 Passat cruise stops working discodog VW B5 Passat TDIs 5 February 23rd, 2005 06:36
Passat wagon backup lights not working DJGeorge VW MKIII-A3/B4 TDIs 8 December 11th, 2004 16:54

All times are GMT -7. The time now is 08:59.

Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Copyright - TDIClub Online LTD - 2014
Contact Us | Privacy Statement | Forum Rules | Disclaimer
TDIClub Online Ltd (TDIClub.com) is not affiliated with the VWoA or VWAG and is supported by contributions from viewers like you.
1996 - 2015, All Rights Reserved
Page generated in 0.36267 seconds with 10 queries
[Output: 59.78 Kb. compressed to 54.42 Kb. by saving 5.36 Kb. (8.97%)]