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D4 - Common Faults Quick links to all known common faults and their solutions

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  #21  
Old 21st May 2016, 05:14 PM
Joe2.0E Joe2.0E is offline
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Thanks for posting, I'll add it to my to do list.
Would it be possible to access by removing a wheel arch liner ?
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  #22  
Old 22nd May 2016, 09:34 PM
nath nath is offline
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yes for the front plug

however here is one which is sandwiched between the inter-cooler
and the pump itself
this is difficult with the **** guard off
i would say even more so with just the wheel arch removed
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  #23  
Old 22nd June 2016, 07:48 PM
damtom85 damtom85 is offline
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hi all

are you all talking about this issue because my a8 is having this error since i bought it

Code:
Address 08: Auto HVAC (J255)       Labels: Redir Fail!
   Part No SW: 4H0 820 043 G    HW: 4H0 820 043 G
   Component: Klima 2 Zonen H20 0110  
   Coding: 3621002830
   Shop #: WSC 02313 785 00200
   ASAM Dataset: EV_AirCondiFront 001050
   ROD: EV_AirCondiFront_AU64.rod
   VCID: 2447AAB92FD469012A7-8071

1 Fault Found:
0378 - Coolant Circulation Pump 
          B10D0 04 [009] - Internal System Fault
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 3
                    Fault Frequency: 1
                    Reset counter: 114
                    Mileage: 79318 km
                    Date: 2015.03.27
                    Time: 08:02:51
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Last edited by damtom85; 22nd June 2016 at 08:04 PM.
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  #24  
Old 22nd June 2016, 08:00 PM
paulrstaylor paulrstaylor is offline
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Mine has had a new pump fitted - under warranty so no idea of cost but don't think it was a huge job.
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  #25  
Old 22nd June 2016, 08:06 PM
damtom85 damtom85 is offline
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but photos that Nath added, are they regarding my fault with cooling pump ?
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  #26  
Old 23rd June 2016, 04:35 PM
damtom85 damtom85 is offline
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Quote:
Originally Posted by Joe2.0E View Post
V059121012A is the part no. for the coolant pump replaced on my D4.
Google indicates its a small cheap looking plastic pump, no surprise it didnt last long. Not sure it does much anyway as i hadnt noticed any issue prior to replacement or any difference afterwards.
Photo attached from Garage Paperwork. Prices are in € + vat.

i cant find this part as this is the pump is likely to throw fault
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  #27  
Old 23rd June 2016, 05:22 PM
damtom85 damtom85 is offline
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according to another thread on different vw/audi forum coolant pump V50 is located in firewall. so basically i need to remove plastic covers next to windscreen and i should see it
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  #28  
Old 3rd July 2016, 07:18 PM
damtom85 damtom85 is offline
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ok let me sum up,

my engine is 3.0 tdi. according to audi in my car is only one valve- n509 doesn't exist in 3.0tdi, only n488 and has number 4H0121671D and looks like that:
https://flic.kr/p/HPEtKN

and in my case this valve is located next to gearbox, between gearbox and geabox heat exchanger (small radiator)

also circulation pump v50 has number 059121012A and looks like that https://flic.kr/p/JKX8Va

and it is located in firewall on left side if you look from front of the car
https://flic.kr/p/JKWJdF

https://flic.kr/p/JKWJbr

https://flic.kr/p/Jkam8C

and this error / fault
Code:
Address 08: Auto HVAC (J255)       Labels: Redir Fail!
   Part No SW: 4H0 820 043 G    HW: 4H0 820 043 G
   Component: Klima 2 Zonen H20 0110  
   Coding: 3621002830
   Shop #: WSC 02313 785 00200
   ASAM Dataset: EV_AirCondiFront 001050
   ROD: EV_AirCondiFront_AU64.rod
   VCID: 2447AAB92FD469012A7-8071

1 Fault Found:
0378 - Coolant Circulation Pump 
          B10D0 04 [009] - Internal System Fault
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 3
                    Fault Frequency: 1
                    Reset counter: 114
                    Mileage: 79318 km
                    Date: 2015.03.27
                    Time: 08:02:51
it is caused by this pump, and needs to be replaced for error to be gone.

thanks
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Last edited by damtom85; 11th November 2016 at 11:03 PM.
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  #29  
Old 11th November 2016, 09:12 PM
Albert_Swafega Albert_Swafega is offline
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damtom85,

i see it was summer when you changed your pump, don't suppose you noticed if the blowers got warm?

mine are all but stone cold, only just noticed as the weather has turned, and the only error thrown is the same pump error as yours.

makes sence, i think, but don't want to waste 100 on a pump if it's not the fault

cheers

Albert
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  #30  
Old 11th November 2016, 10:45 PM
damtom85 damtom85 is offline
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Hi.

car gets warmer much much quicker than before, I bought used one for 40. audi fits them in A8, A7, A6, A5, A4 so it is easy to find them.

PS. I changed mine 2 weeks ago not in summer. I knew what was the issue but didn't have time to do it. however now weather turned cold I needed to change it. Done it in 20 minutes, difference is huge.
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Last edited by damtom85; 13th November 2016 at 01:25 PM.
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