battery dying - Club Touareg Forums
 
Thread Tools Display Modes
post #1 of 7 Old 03-20-2019 Thread Starter
Junior Member
 
Touareg: 2004 V8
Join Date: Jul 2018
Location: USA
Second Vehicle: Still looking
Posts: 13
Thanks: 0
Thanked 0 Times in 0 Posts
battery dying

Hey guys and gals, my new to me 2004 v8 Touareg (180kmiles) is having battery issues. The PO (my stepdad) replaced the battery in March 2018. I don't drive it very often, and it regularly sits for 2-3 weeks at a time.

The Treg wouldnt start about 3 weeks ago, after sitting for about 2 weeks. I thought maybe I left a light on or something. I charged it and drove it a few hundred miles over the weekend with no problems, the parked it. A few days later i checked it and battery was completely dead (4.2 v). I realized that I accidentaly left the headlights on for 2 or 3 days!

I put the charger back on, and then ran the battery conditioning cycle on my battery charger (took about 24 hours). The Treg sat for 4 days while I was out of town. Today, the battery is down to about 4v again. I'm assuming I killed the battery with the 3 day headlight drain, but want to check all options before I replace the battery again.

I read about a problem with the battery to alt cable. I found a note from PO that the says in 2007, with 70k miles: Recall done: N5 = Air Cleaner and Alternator wiring. Is this the battery to alt cable issue that I read about? If so, would it have gone bad again? If not, how big of a job is it to fix the battery to alt wiring?

Thanks!
hpcaub is offline  
Sponsored Links
Advertisement
 
post #2 of 7 Old 03-20-2019
Touareg Guru
 
noobytoogy's Avatar
 
Touareg: Still looking
Join Date: May 2009
Location: Brexit Central, England
Second Vehicle: is not a VW
Posts: 20,336
Thanks: 0
Thanked 578 Times in 504 Posts
Where is the car when you leave it?


Where are the keys when you leave it?


Is the car properly locked up each time?


Is there a mains power point you could use to plug in a battery conditioner like a Ctek?


Here's how to fit a new battery:


https://www.mytreg.com/index.php?/to...es-in-the-v10/

VW Touareg models are as follows:
Generation 1: T1 is model 7LA & facelift T2 is model 7L6
Generation 2: T3 is model 7P5 & facelift T4 is model 7P6
Generation 3: T5 is model CR7 [Not available in "VW Atlas" North America!]
Read Wikipedia:
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

T1 & T2 buyers MUST read:
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

Use Google or Bing to search by typing in: site:
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
followed by what you seek
noobytoogy is offline  
post #3 of 7 Old 03-20-2019 Thread Starter
Junior Member
 
Touareg: 2004 V8
Join Date: Jul 2018
Location: USA
Second Vehicle: Still looking
Posts: 13
Thanks: 0
Thanked 0 Times in 0 Posts
hpcaub

Thanks for the battery change link, Noobytoogy. Treg is parked in my driveway, locked up, with keys in the house about 40 feet away. I'm not sure what a Ctek is, but my charger has a "conditioner" mode that I tried to use. I suspect I damaged the battery beyond repair by leaving the lights on. I'll probably hookup a trickle charger quick connect after I get a new battery, so I can keep it charged when sitting for weeks at a time.
hpcaub is offline  
Sponsored Links
Advertisement
 
post #4 of 7 Old 03-20-2019
Multiple v10tdi owner
 
Blownvette's Avatar
 
Touareg: 2004 V10 TDI
Join Date: Apr 2010
Location: Rockville, MD
Second Vehicle: 2004 V10 TDI
Posts: 683
Thanks: 1
Thanked 22 Times in 19 Posts
Garage
There is a lot of things that can cause a draw. Best to start with a known good battery and see if you have problems after a good battery is in place. From there a search on this forum can show the main places to check and explain what vcds is and how to use it for tracking down problems.

If the radio is not stock or even if it is and you are still having a drain issue you may want to pull a few fuses for the radio and see if that helps. Also make sure that the battery is the correct size. I had a car with the wrong size battery and it caused a world of issues!

3 V10TDI's: (2)2004 Black/Black, Silver/Black and 2004 V10TDI in 1990 Corvette
Blownvette is offline  
post #5 of 7 Old 03-20-2019
Touareg Mechanic
 
Touareg: 2004 V6
Join Date: Aug 2017
Location: France
Second Vehicle: Still looking
Posts: 1,265
Thanks: 16
Thanked 51 Times in 49 Posts
If you want to check for a parasitic leak:

TRespect is offline  
post #6 of 7 Old 03-20-2019
Touareg Mechanic
 
Touareg: 2004 V6
Join Date: Aug 2017
Location: France
Second Vehicle: Still looking
Posts: 1,265
Thanks: 16
Thanked 51 Times in 49 Posts
Quote:
Originally Posted by hpcaub View Post
I'm not sure what a Ctek is

TRespect is offline  
post #7 of 7 Old 03-20-2019
Touareg Addict
 
Touareg: 2008 V8
Join Date: Nov 2015
Location: Colorado, United States
Second Vehicle: Other
Posts: 2,065
Thanks: 1
Thanked 136 Times in 132 Posts
I suspect the battery is toasted.
:- (

But if you have a second vehicle, you can remove it and take it to a parts store and have them test it for you first. But expect to buy a new one.

2008 V8
No VCDS? Get it here:
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
FSJ Guy is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Club Touareg Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
T3 battery replacement chassis General Maintenance & Repair 30 3 Weeks Ago 04:23 PM
T2 Battery/charging issues gldgti General Maintenance & Repair 32 12-20-2018 10:41 PM
How to replace your stock Touareg BATTERY Tahoe Touareg DIY and Technical Info - DO NOT POST NEW THREADS ASKING QUESTIONS 187 10-04-2018 12:43 AM
T3 completely flat battery overnight Toiler Australia & New Zealand 4 05-30-2015 08:10 PM
04 V8 Voltmeter bouncing, battery dying wheat04T1 General Maintenance & Repair 7 06-11-2013 08:22 AM

Posting Rules  
You may post new threads
You may 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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 
For the best viewing experience please update your browser to Google Chrome
 

VW Touareg News Delivered to your Email!

Stay up-to-date with Touareg news in your inbox.

unsusbcribe at anytime with one click

Close [X]