Audi Q7 TDI Fuel Filter Change and Prime with VCDS
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- Опубликовано: 25 ноя 2021
- ***Here is the link if you want to read up on my past mods that have been done on the car (2004 Audi s4)
www.audizine.com/forum/showth...
***Instagram: @mark_b6s4
/ mark_b6s4
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Parts
Audi/VW Fuel Filter - Hengst 8K0127400A
www.fcpeuro.com/products/audi...
Lisle 22850 Hose Pincher
www.amazon.com/gp/product/B00...
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Авто/Мото
![[Diesel K]Audi Q7 maintenance](http://i.ytimg.com/vi/1iYN2HipTYI/mqdefault.jpg)
Thank you! Very clear instructions about the part installation and using VCDS.
Happy to hear this video has been helpful!
Thanks. was clueless before. Took notes and worked like a champ.
Your welcome, happy to hear this video helped out
Great video!
Only things I do differently below:
-Use the Caps that come with the new filter to block the old ones once the hose is removes. Frees up a hand.
-Take the input hose off first. Probably not needed but I don't want FOD caught in the filter to back into the input line in case my clamps are leaky.
-I also prime via the Key. Key on (NO IGNITION, Don't press brake in to avoid engine start) 30 seconds (hear the pump stop), repeat at least 5 times. I do 6x as I think the VCDS command pump is a higher Duty cycle compared to the accessory pump cycling. I own a VCDS, but doing it in one motion helps me from forgetting.
Someone else mentioned that they also prime it with just switching the key to on a few times. I just felt as ez doing it with vcds
@@markb6s4 def either way will work. It just keeps me from forgetting
I will be pulling out the lift pumps to get rid of contaminating fuel, could this same procedure be used to purge the air that was introduced?
Great video. I never used the scan that tool or program you have but I do cycle the key so it cycles the fuel through. I’m on my 5th fuel filter. Keep the videos coming Mark.
I am glad you have been successful with cycling the key. I was not that brave and bought the VCDS as I plan to keep this vehicle a long time and it is a great software tool to have.
Thanks. You are braver then me to do it that way 😅
@@jimw3799 vcds is a must have tool to have especially if you own any Audi/VW
@@markb6s4 I got 164k miles on my 2015 Q7 TDI.
I cycle it at least 5 times never had a problem
I refill the fuel filter as much as possible and let the fuel pump cycle several times, never had any air in the system
There are several good ways to do this and that's one of them
Great video as always Mark. I was wondering about the VCDS and the Malone tune you have. They are compatible? I assume they would be but was curious if there were any issues with using the scan software with the Malone tune on there.
I have had no issues at all using vcds with the Malone tune. All has been good
Hey again Mark, I'm wondering if you have replaced your fuel injectors on the Q7? That would make a great video if you are looking for subject matter.
I have not looked into it. As of the moment have a lot of stuff keeping me away from working on the cars. Also since i have not had any issues with the injectors it's not something i have looked into
Does anyone have an updated procedure for VCDS? The one shown no longer works.
Engine -> Output Tests -> Fuel pump electronics -> Start/Stop
New sub as we have just got one thanks for videos will check out the rest love from uk ❤❤
Thank you!!!
Hi i have a 2008 with the fuel filter in a black canister not this type. I fitted one but now car keeps saying low fuel pressure bank 1. Is there air in system maybe as i did the flush at the time??
Not familiar those those do fuel filter set ups. But know what you are talking about. That may be the issue. Not the same thing but this happened to me when bleeding the breaks once. Trapped air and made the break peddles really mushy. So in the same sense it can be trapped air somewhere
My 2008 tdi q7 has strange humming noise coming from this filter. Would this mean time to replace. Humming noise started when glow plug light come on and went into limp mode.
If it hasn't been changed since 2008, then it's long over due to change it. If you are sure the noise is coming from the filter. Something in the filter may be coming undone on the inside that when fuel is passing by is making it make a sound
@@markb6s4 Thanks for your reply. vechicle is due to go into Audi Thursday this week for service plus additional change of filters (air& fuel), brake fluid change extra of course. Only had car for 3 months. Hoping had nothing to do with fuel pump. Have driven 2.5k miles had no problems so far.
@@brett7220 let me know if that fixes the problem. I'm curious to find out too
@@markb6s4 Hi, my Audi went in for major service as its noted. I think for now the problem is solved on my Audi 58 plate 2008/2009 Q7 s-line with the humming noise coming from what I thought was an in-line filter.
It turns out on my one, its an in-line return fuel pump which is mounted just above and offset to the back on the passengers side of engine bay from fuel filter/ canister. Only 4-5 inches of rubber hose connecting the two.
Would post a picture but unsure how to.
Fingers crossed humming has stopped.
How did you get it out of limp mode
I've seen other people change theirs without VCDS...is this necessary?
There have been several people that have done this with out using VCDS. I believe all they do is turn off and on the ignition a few times to prime it that way. Since I have vcds I might as well use it and be on the safe side
When you use to test pump where the ear goes to from the filter?
I'm not sure where the air from the filter goes to be honest
ok i think it pushes back to the fuel tank
That actually makes sense if it does. I didn't even think of that
Can i download the VCDS online? Where can i get it?
Yes the software is free to download. But to use the software you need to have a vagcom cable. Google "Ross tech"
@@markb6s4 how's about the obd cable what do you recommend from?
@@francisq4446 store.ross-tech.com/shop/vchv2_ent/
This is pretty much what you will need. The price very if you get a 3 vin or 10 vin cable. And what that means if you get the 3 vin you can only use the cable only on 3 different cars for the life of the cable. So if you sell a car that the cable has been used on. Youll still have only 2 more cars tonus it on. So make sure that the car you plan on using it on that you plane in keeping it for a very long time
It’s so accessible on the q7, my Q5 it’s tucked underneath
Haven't seen what a q5 looks I figured it would have the same layout as the q7