www.tdiclub.com

Economy - Longevity - Performance
The #1 Source of TDI Information on the Web!
Forums Articles Links Meets
Orders TDI Club Cards TDIFest 2016 Gone, but not forgotten VAG-Com List Unit Conversions TDIClub Chat Thank You




Go Back   TDIClub Forums > VW TDI Discussion Areas > TDI 101

TDI 101 Got a simple/basic TDI question? Are you a newbie (new to the forums). Feel free to post your question here.

Reply
 
Thread Tools
Old January 3rd, 2007, 20:04   #1
2Dambad
Newbie
 
Join Date: Mar 2006
Location: St Louis MO
Default Low voltage???

Today I got a low voltage warning, not from my 2005 Jetta, from my radar detector (built in low voltage warning). This occured twice when waiting for the glow plugs to warm up, it went away when the car started, and didnt come back when the car was warm. Should I start trying to find a new battery, or is this just something that will happen when it is cold?
2Dambad is offline   Reply With Quote
Old January 3rd, 2007, 22:33   #2
greengeeker
 
greengeeker's Avatar
 
Join Date: Feb 2006
Location: Cambridge, MN
Fuel Economy: 42.2/50.0/58.1
Default

The glow plugs put quite a load on the battery when they cycle. Unless you are having starting issues or your car is telling you something is wrong, I wouldn't worry about it.
__________________
- Nick -
02 Jetta TDI 308k (42.2/50.3/59.4 MPG) // 01 Eurovan 24V (18 MPG) // 00 TDI Ranger (39MPG)
How to Post Pics - How to Search
TDIclub trusted mechanic in Minnesota - PM me
greengeeker is offline   Reply With Quote
Old January 4th, 2007, 04:04   #3
Joe_Meehan
Veteran Member
 
Joe_Meehan's Avatar
 
Join Date: Sep 2005
Location: Ohio USA
Fuel Economy: mid-upper 40's city upper 50's - low 60's Highway
Default

I agree with green. The glowplugs are drawing a lot of current, the battery is cold and putting less out. If you are making a lot of short trips, then you may want to consider doing a few longer trips or doing a little charging.

That said, it could also be the first indication of a battery ageing. It would seem that it is a little early for battery problems, but they do happen. I would continue to watch it and maybe have someone do a load test on it.

If you have a good voltage meter, you can check the voltage at the battery after the car is warm. You should get something between about 14.2 and 14.4. If you are below 13.5 I would have it checked.
__________________
Joe Meehan
2002 NB Silver Ohio BAA HUM
Joe_Meehan is offline   Reply With Quote
Old January 4th, 2007, 08:05   #4
2Dambad
Newbie
 
Join Date: Mar 2006
Location: St Louis MO
Default

Thanks to both of you who responded. Normally, the car is driven 40 miles one way to work, but this week, the car and I are both setting at home. I will throw a volt meter on it later today if I decide to go anywhere.
2Dambad is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 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


All times are GMT -7. The time now is 23:46.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright - TDIClub Online LTD - 2017
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 - 2017, All Rights Reserved
Page generated in 0.10810 seconds with 10 queries
[Output: 58.71 Kb. compressed to 52.17 Kb. by saving 6.54 Kb. (11.14%)]