Notices
 
 

  

User Tag List

Thread: Audi A4 B8 2009 2.0 TDI 170hp - Second thermostat problem ( coolant under 90° )

Results 1 to 7 of 7
  1. Lightbulb Audi A4 B8 2009 2.0 TDI 170hp - Second thermostat problem ( coolant under 90° ) 
    #1
    Join Date
    Jan 2021
    Location
    Romania
    Posts
    4
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)
    Hello! I've recently bought my A4 and it has a problem, coolant temp hardly reaches 700​C when I drive around for some time, and then when I stop for a few minutes, it goes down close to 500​. As I've read a lot around forums and Facebook groups, I've come to the conclusion that the problem might be in a second thermostat on a hose ( See nr. 23 in the photo below ). For my model, do you know what the code for that thermostat is? I need to order it because the service I went in can't seem to find it and basically said that they're gonna change it if and when I will manage to get one. I found this: 03L 122 157 M ( this is the hose from nr. 23 ), and I wanted to know if it work on my model, also, if it's possible to only change the thermostat and not the entire hose? I found this thermostat: 1K0 121 113A but I don't know if it's the right one. Sorry if I didn't explain it in the best way, english is not my first language, I just hope that people who had this problem on my model could help me!

    Inked636121410_LI.jpg
    Attached Images
     
    0 0 0
     

  2. Re: Audi A4 B8 2009 2.0 TDI 170hp - Second thermostat problem ( coolant under 90° ) 
    #2
    Join Date
    Nov 2006
    Location
    Crewe, Cheshire
    Posts
    441
    Post Thanks / Like
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    67 Post(s)
    Yes, 1K0 121 113A is the correct part.
    Available through Amazon or eBay & many parts distributors.

    It's easy enough to change yourself.
    You won't loose much coolant, but need to have a bottle to top up the reservoir afterwards.
     
    0 0 0
     

  3. Re: Audi A4 B8 2009 2.0 TDI 170hp - Second thermostat problem ( coolant under 90° ) 
    #3
    Join Date
    Jan 2021
    Location
    Romania
    Posts
    4
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)
    Quote Originally Posted by philipharmes View Post
    Yes, 1K0 121 113A is the correct part.
    Available through Amazon or eBay & many parts distributors.

    It's easy enough to change yourself.
    You won't loose much coolant, but need to have a bottle to top up the reservoir afterwards.

    Hello! Thank you for the reply!

    Is this the right one?: https://www.autopieseonline24.ro/mahle-original/7815022

    If yes, I will order it right away!
     
    0 0 0
     

  4. Re: Audi A4 B8 2009 2.0 TDI 170hp - Second thermostat problem ( coolant under 90° ) 
    #4
    Join Date
    Nov 2006
    Location
    Crewe, Cheshire
    Posts
    441
    Post Thanks / Like
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    67 Post(s)
    Yes, correct one.

    Make sure you fit the same way as the one removed.
     
    0 0 0
     

  5. Re: Audi A4 B8 2009 2.0 TDI 170hp - Second thermostat problem ( coolant under 90° ) 
    #5
    Join Date
    Jan 2021
    Location
    Romania
    Posts
    4
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)
    Quote Originally Posted by philipharmes View Post
    Yes, correct one.

    Make sure you fit the same way as the one removed.
    Sorry for the late reply! I have ordered it, do you have any tutorial you could link me to?
     
    0 0 0
     

  6. Re: Audi A4 B8 2009 2.0 TDI 170hp - Second thermostat problem ( coolant under 90° ) 
    #6
    Join Date
    Nov 2006
    Location
    Crewe, Cheshire
    Posts
    441
    Post Thanks / Like
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    67 Post(s)
    Here is one from youtube, but in German I think.
    VW Passat - Motor wird nicht richtig warm 7B 3C Thermostat DSG defekt 2.0l TDI - YouTube

    Pictures speak a thousand words as they say.

    Don't know if it is the same engine layout as yours, but should be roughly in the same area.
     
    0 0 0
     

  7. Re: Audi A4 B8 2009 2.0 TDI 170hp - Second thermostat problem ( coolant under 90° ) 
    #7
    Join Date
    Jan 2021
    Location
    Romania
    Posts
    4
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)
    Quote Originally Posted by philipharmes View Post
    Here is one from youtube, but in German I think.
    VW Passat - Motor wird nicht richtig warm 7B 3C Thermostat DSG defekt 2.0l TDI - YouTube

    Pictures speak a thousand words as they say.

    Don't know if it is the same engine layout as yours, but should be roughly in the same area.
    Okay, thank you!
     
    0 0 0
     

Similar Threads

  1. Audi A6 Coolant thermostat change
    By sapstar in forum Audi A6 - C6 Forum - 2005 - 2010
    Replies: 18
    Last Post: 30-09-2016, 01:05 AM
  2. audi a3 2009 1.9tdi service light reset problem
    By chris96a4 in forum VCDS - Help Requests
    Replies: 7
    Last Post: 06-05-2014, 04:13 PM
  3. Thermostat & coolant change
    By stevepd in forum Audi A6 - C5 Forum - 1998 - 2004
    Replies: 1
    Last Post: 29-09-2013, 06:47 PM
  4. Please Help 2009 Audi A4 xenon headlight problem
    By dbonyad in forum Audi A4 - B8 Forum - 2008 - 2015
    Replies: 3
    Last Post: 19-02-2013, 09:43 PM
  5. engine management light on - A3 2009 TDI 170HP
    By pform in forum 2.0TDi - Engine
    Replies: 2
    Last Post: 18-07-2010, 09:19 PM
Tags for this Thread

View Tag Cloud

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 -