Notices
 
 

  

User Tag List

Thread: Low battery warning

Page 1 of 3 123 LastLast
Results 1 to 10 of 25
  1. Low battery warning 
    #1
    Join Date
    Jan 2016
    Location
    West Lothian
    Posts
    155
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    14 Post(s)
    Keep getting a low battery warning on the Passat estate - itís a 2016 model. Taken it for a drive and it goes away but not before long it comes back. Itís now saying battery almost flat.

    Thinking of just fitting a new battery but wondering if it need to go into a dealer rather then just kwikfit?
    VW Passat GT 4 Motion 2.0 BiTdi, '16MY in Midnight Blue, keyless entry, memory seats, active info display and Discover Nav Pro
    Audi A7 20MY Vorsprung 3.0tdi in Daytona grey, with optional rear cup holders! (Previously A7 16my S Line)
     
    0 0 0
     

  2. Re: Low battery warning 
    #2
    Join Date
    Nov 2006
    Location
    Crewe, Cheshire
    Posts
    393
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    58 Post(s)
    If it has Stop/ Start it will need an AGM replacement battery.
    Then after fitting, coding with VCDS so the electronics knows there is a new battery fitted & charges accordingly.
     
    0 0 0
     

  3. Re: Low battery warning 
    #3
    Join Date
    Jan 2016
    Location
    West Lothian
    Posts
    155
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    14 Post(s)
    Thanks wasnít aware of the coding requirement. I assume any reputable garage can do that now.
    VW Passat GT 4 Motion 2.0 BiTdi, '16MY in Midnight Blue, keyless entry, memory seats, active info display and Discover Nav Pro
    Audi A7 20MY Vorsprung 3.0tdi in Daytona grey, with optional rear cup holders! (Previously A7 16my S Line)
     
    0 0 0
     

  4. Re: Low battery warning 
    #4
    Join Date
    Nov 2006
    Location
    Crewe, Cheshire
    Posts
    393
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    58 Post(s)
    "
    I assume any reputable garage can do that now. "

    I don't think so.

    They would need specific VW software like VCDS to get into the battery module.
     
    0 0 0
     

  5. Re: Low battery warning 
    #5
    Join Date
    Mar 2008
    Location
    Chichester
    Posts
    1
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)
    I have a similar 2015 model GT Bi-Turbo 4-Motion Passat Estate and noticed last year that cold starting the engine was beginning to sound as though the battery was approaching the end of its useful life - no battery warnings though.

    I bought a replacement battery with a five year warranty from Halfords. They fitted it, then plugged in a box and pressed its buttons for a while and that was that. It seemed that the button pressing also turned off some features in the Driver Assistance Pack, but when I drove it the next day everything was working normally.

    In November 2019 the battery cost £157 fitted. I see that today's price has advanced to £184.
     
    0 0 0
     

  6. Re: Low battery warning 
    #6
    Join Date
    Aug 2007
    Location
    Ware, Herts
    Posts
    131
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)
    You were lucky! For the first time in my long life I discovered that I should not change the battery unless I have VCDS/diagnostics to 'register it'.
    So in these difficult times I decided to spend £25 for Halfords to come to my house and do it for me. The advert clearly stated they would register it with the ECU. Good. I then got confirmation of payment emails from a mobile tyre firm! (Halfords have bought them it seems). I emailed them asking them to confirm they will register the new battery with the ECU and they confirmed this by email. Bang on time the chap arrived to change the battery and I asked if he had the diagnostic gear before he started the job. He had no idea what I was talking about and 'I've done loads' he said. He then rang his manager who 'confirmed' they had a 'new way' of registering the battery. Steering wheel 3 turns left then 3 turns right. I said thats for the power steering so he decided to leave it and I got a refund. So there's a lot of B8's out there that don't have the battery registered to the ECU. The worst thing is that after a month of chasing I have not had one single call/email to apologise.
    That was pretty poor but is now history, What I cant get my mind around is why this car needs a lengthy serial number copied from the battery BEM label so it knows how the charge it appropriately. Isnt the cars charging system clever enough the charge at the correct level? Modern chargers manage it. If it really needs to know its a new battery why not just tick the VCDS box to say 'New'.
     
    0 0 0
     

  7. Re: Low battery warning 
    #7
    Join Date
    Feb 2013
    Location
    Maidenhead Berks UK
    Posts
    97
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    6 Post(s)
    I believe that if the battery is not coded in at the time of fitting that the system will slowly adjust to a revised charging regime.
     
    0 0 0
     

  8. Re: Low battery warning 
    #8
    Join Date
    Aug 2007
    Location
    Ware, Herts
    Posts
    131
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)
    Quote Originally Posted by 32110 View Post
    I believe that if the battery is not coded in at the time of fitting that the system will slowly adjust to a revised charging regime.
    Hi, I would like to think that was correct but my email back from VW says a replacement battery needs to be coded and the Halfords advert says they do it. If it slowly adjusts then why go to the trouble of typing into VCDS a string of numbers copied from the new battery. All so annoying really
     
    0 0 0
     

  9. Re: Low battery warning 
    #9
    Join Date
    Mar 2013
    Location
    Brightlingsea
    Posts
    69
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    8 Post(s)
    Different batteries have different optimum settings for bulk, absorption and float charging stages. A lot of very fancy battery chargers are programmable for each stage. Less fancy ones can at least be configured for the battery type (wet cell, gel, AGM etc.). I'm sceptical that a charger could correctly and safely auto-configure itself.

    There may be safety issues with trying to charge a conventional lead acid battery as though it were an AGM battery, in the eventuality that someone put the wrong battery type in.
     
    0 0 0
     

  10. Re: Low battery warning 
    #10
    Join Date
    Feb 2013
    Location
    Maidenhead Berks UK
    Posts
    97
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    6 Post(s)
    In my post above I was referring to the vehicle charging system rather than external battery charger.
     
    0 0 0
     

Page 1 of 3 123 LastLast

Similar Threads

  1. Low Battery Warning!
    By Richmix in forum Audi A4 - B8 Forum - 2008 - 2015
    Replies: 26
    Last Post: 21-04-2018, 09:44 AM
  2. Battery Warning
    By pxr5 in forum Audi A6 - C6 Forum - 2005 - 2010
    Replies: 8
    Last Post: 17-08-2012, 07:56 PM
  3. Please Help 2003 A4 1.9 130 battery warning
    By A7788 in forum Audi A4 - B6 Forum - 2002 - 2005
    Replies: 0
    Last Post: 01-08-2012, 10:03 AM
  4. Battery warning light
    By Token in forum Beetle 2000-
    Replies: 1
    Last Post: 28-11-2009, 02:53 PM
  5. Battery warning light????
    By vwluke in forum Touran - Sharan - Caravelle
    Replies: 5
    Last Post: 22-11-2009, 10:03 PM
Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  


 



  


Disclaimer: VW Audi Forum is an "independant enthusiast website", administered in line with guidelines supplied by VAG in the UK, and is in no way related to any of the Worldwide Volkswagen,Audi,Seat,Skoda,Bentley,Bugatti,Porsche or Lamborghini group of Companies. For official up to date information on any of there vehicles, please visit the official websites. Any comments made throughout this website, are the views of the respective poster, and in no way represent the views of the VW Audi Forum Administration, or the worldwide Volkswagen & Audi Group of companies.


VW Audi Forum do not vet and are not responsible for any information which is posted in this forum. All content is viewed and used by you at your own risk and we do not warrant the accuracy or reliability of any of the information.


Copyright: Certain "words", "phrases" and "Images" used on this website by the Administration are "Copyright" of Volkswagen GB, Volkswagen AG (Germany), Audi GB, Audi AG (Germany), Volkswagen Motorsport GB, Volkswagen Motorsport AG (Germany), Audi Motorsport AG (Germany), Volkswagen Racing GB, Bentley, Bugatti, Porsche and Lamborghini. No image can be replicated by anyone WITHOUT the relevant Companies written permission.


All trademarks and copyrights remain property of their respective owners.

No part of the VW Audi Forum website or forum may be reproduced without written permission from the site administration


PLEASE NOTE - PERSONAL ABUSE, ABUSE AGAINST THIS OR ANY OTHER WEBSITE OR ANY COMPANY WILL NOT BE TOLERATED. OFFENDERS WILL BE MODERATED OR EVEN BANNED.


This website and forum are best viewed at a minimum resolution of 1024 by 768.



  



- VW AUDI Forum - The #1 Volkswagen (VW) Group Forum - Volkswagen (VW) - Audi - Seat - Skoda - Bentley - Bugatti - Lamborghini - Porsche - Scania - MAN - Ducatti - VW Audi Forum -


- www.vwaudiforum.co.uk - www.vwaudiforum.co.uk -