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Model specific boards => Golf mk7 => Topic started by: Yusee on 02 November 2021, 19:53

Title: Can you use OBDeleven to tell how often the VAQ has engaged?
Post by: Yusee on 02 November 2021, 19:53
Mainly for interest, but also as I’m coming up to third year service, I’m wondering whether to request VAQ service

I’m only on 19k miles and I suspect the oil is perfectly good.

Anyone know if a scan tool can tell how much the diff has been used?
Title: Re: Can you use OBDeleven to tell how often the VAQ has engaged?
Post by: Rudedog on 02 November 2021, 21:26
From the many forum posts I've seen this seems to be a third year service although nothing is written down in the UK at least, good luck trying to find a UK dealer who will do it without a lot of discussion, unlike the DSG service which is purely based on mileage at 40K, again you will need to book that in yourself as there is no prompt from the car.

Interested to know how you get on...
Title: Re: Can you use OBDeleven to tell how often the VAQ has engaged?
Post by: clubsport on 02 November 2021, 23:08
The suggested service interval is 10k miles or 3 years on the diff.
I would be keen to change the fluid after your 19k miles.
I don't have it to hand, but Obd11 does show some data on the diff, such as time spent of diff overheating & wear.
I have had diff service on different Gti, other than peace of mind, I could not notice any difference in the drive.   
Title: Re: Can you use OBDeleven to tell how often the VAQ has engaged?
Post by: Yusee on 02 November 2021, 23:13
I’ve just booked my car for service, i was offered a brake fluid change but no mention of VAQ service.

I’m inclined to leave it for another year or so because
- mileage quite low
- mostly relatively sedate commuter miles
- debate as to whether it is or isn’t a serviceable item
- most people report the fluid they replace looks as clean as the stuff they put in
- I haven’t heard any reports of VAQ failure
Title: Re: Can you use OBDeleven to tell how often the VAQ has engaged?
Post by: Yusee on 02 November 2021, 23:17
The suggested service interval is 10k miles or 3 years on the diff.
I would be keen to change the fluid after your 19k miles.
I don't have it to hand, but Obd11 does show some data on the diff, such as time spent of diff overheating & wear.
I have had diff service on different Gti, other than peace of mind, I could not notice any difference in the drive.

Thanks. I’ll look through the OBD menus, if you can show me where to find the data when you get a chance, I’d be interested
Title: Re: Can you use OBDeleven to tell how often the VAQ has engaged?
Post by: clubsport on 03 November 2021, 09:11
The suggested service interval is 10k miles or 3 years on the diff.
I would be keen to change the fluid after your 19k miles.
I don't have it to hand, but Obd11 does show some data on the diff, such as time spent of diff overheating & wear.
I have had diff service on different Gti, other than peace of mind, I could not notice any difference in the drive.

Thanks. I’ll look through the OBD menus, if you can show me where to find the data when you get a chance, I’d be interested

This guide includes a part on OBD11 functions, once you enter- Control units> Lock electronics> Live data.... You can tick off the options you want to view in real time.

https://www.youtube.com/watch?v=YW6b5myTgvI&list=LL&index=103

I wouldn't hesitate in changing the fluid, it's a simple diy, covered elsewhere on this forum.
Title: Re: Can you use OBDeleven to tell how often the VAQ has engaged?
Post by: Rudedog on 03 November 2021, 09:42
Filter as well???

If I remember from YT video's it looks a PITA as there is a cross-bar blocking part of the process.

I still don't understand why VW main dealers don't have this on their service schedules for the PP?

You would think that they would want any way of getting a few £££ from us.

Title: Re: Can you use OBDeleven to tell how often the VAQ has engaged?
Post by: Yusee on 03 November 2021, 09:54
Yes I’ve read that the filter collects a lot a debris, but no one changes this.

I think all that happens is that good fluid gets swapped for good fluid.

I did look through the lock differential/ live data list- couldn’t find anything on time spent.
Title: Re: Can you use OBDeleven to tell how often the VAQ has engaged?
Post by: Yusee on 03 November 2021, 10:06

I still don't understand why VW main dealers don't have this on their service schedules for the PP?

You would think that they would want any way of getting a few £££ from us.

I read on one thread that the US market is very sensitive to service costs, so VW didn’t want to include this as part of the schedule.
Secondly there is genuine disagreement as to whether it’s necessary. Mk7 is now over 8 years from launch. These things still aren’t going wrong- and I’d bet most cars haven’t had the diff serviced.
Title: Re: Can you use OBDeleven to tell how often the VAQ has engaged?
Post by: Coolhandluke on 03 November 2021, 10:41
I've just had my 3rd engine oil change done at 26,000 and the dealer did mention an LSD oil change was due at 30,000. I also asked about the DSG and was told its not due till 80,000.
Looking online at VW service schedules it does mention that 7 speed DSG is 80,000 but had in brackets R model.
Is the PP DSG 7 speed different to the R DSG?
Title: Re: Can you use OBDeleven to tell how often the VAQ has engaged?
Post by: Rudedog on 03 November 2021, 12:44
As far as I know all wet-clutch DSG's are 40K, I wouldn't let it go longer as potentially you'll see issues and it's not that expensive compared to a new mechatronics unit!

Title: Re: Can you use OBDeleven to tell how often the VAQ has engaged?
Post by: willni on 03 November 2021, 13:19


Depends on the gearbox revision. Briskoda had this discussion with gearboxes.

https://www.briskoda.net/forums/topic/482244-dq381-service-intervals/

(https://i.postimg.cc/8kYfkgKh/Screenshot-2021-11-03-at-13-18-47.png) (https://postimg.cc/Lhz8vwMX)

and with regard to the VAQ Diff, AwesomeGTI recommend 20k if you're an aggressive driver or 30k miles if you're normal. Interesting they don't specify a time interval, but given most of us will be doing around 6-10k miles a year, you could probably say 3/4 years.

https://www.awesomegti.com/haldex-vaq-front-differential-service-kit/

(https://i.postimg.cc/N0NC50rs/Screenshot-2021-11-03-at-13-23-42.png) (https://postimg.cc/WDkwyTnC)
Title: Re: Can you use OBDeleven to tell how often the VAQ has engaged?
Post by: Rudedog on 03 November 2021, 15:38
This is all interesting....

So we have the DQ381 fitted to the PP's, by the looks of things it's 80K and 'fluid only' and this box uses a different part number fluid to all of the others.

Oddly you would have thought that it should be the other way around and the 'hard' driven cars would have the shorter service time.

Having had a DSG in my previous Mk5 for 14 years I was used to a service every 40K!

To me this just highlights the downside of not having a physical handbook anymore listing the schedules, I guess I'll ask at my year three service next March.



Title: Re: Can you use OBDeleven to tell how often the VAQ has engaged?
Post by: Coolhandluke on 03 November 2021, 16:35
Like you I was used to having the DSG serviced  every 40,000 in my MK5 so was surprised when the dealer mentioned it was 80,000 in my PP.
If that's what they are saying I'll probably go with that.
Title: Re: Can you use OBDeleven to tell how often the VAQ has engaged?
Post by: willni on 03 November 2021, 20:04
To me this just highlights the downside of not having a physical handbook anymore listing the schedules, I guess I'll ask at my year three service next March.

Even a digital handbook in the car through the radio would be handier like those in modern BMW/Minis that tell you oil, coolant, brake fluid and brake pad life expectancy.

Rather than one you have to go to a dealership and get printed off
Title: Re: Can you use OBDeleven to tell how often the VAQ has engaged?
Post by: Yusee on 03 November 2021, 20:48
and with regard to the VAQ Diff, AwesomeGTI recommend 20k if you're an aggressive driver or 30k miles if you're normal. Interesting they don't specify a time interval, but given most of us will be doing around 6-10k miles a year, you could probably say 3/4 years.

I would think usage/ mileage much more important than time. These oils don’t degrade over time.
Title: Re: Can you use OBDeleven to tell how often the VAQ has engaged?
Post by: fredgroves on 03 November 2021, 20:57
To me this just highlights the downside of not having a physical handbook anymore listing the schedules, I guess I'll ask at my year three service next March.

Even a digital handbook in the car through the radio would be handier like those in modern BMW/Minis that tell you oil, coolant, brake fluid and brake pad life expectancy.

Rather than one you have to go to a dealership and get printed off

It's on the mk8...
Title: Re: Can you use OBDeleven to tell how often the VAQ has engaged?
Post by: Yusee on 03 November 2021, 20:58
Like you I was used to having the DSG serviced  every 40,000 in my MK5 so was surprised when the dealer mentioned it was 80,000 in my PP.
If that's what they are saying I'll probably go with that.

I would. Essentially they’re either saying that

-It’s very unlikely to fail ( and experience has shown that, so let’s increase the service interval)

Or

-Changing the oil makes no difference to whether it does or not.

Interestingly, my 1988 205 GTi service handbook states , for gearbox oil - “ no oil change “

They probably didn’t expect the car to survive 30 years when they wrote that handbook, so I changed the oil last year!

Title: Re: Can you use OBDeleven to tell how often the VAQ has engaged?
Post by: willni on 03 November 2021, 21:36
I would think usage/ mileage much more important than time. These oils don’t degrade over time.

Saw a post earlier on that said "Volkswagen state a 30k/3 year service interval for the VAQ diff", if I find it again I'll post it.

 
To me this just highlights the downside of not having a physical handbook anymore listing the schedules, I guess I'll ask at my year three service next March.

Even a digital handbook in the car through the radio would be handier like those in modern BMW/Minis that tell you oil, coolant, brake fluid and brake pad life expectancy.

Rather than one you have to go to a dealership and get printed off

It's on the mk8...

Never mind if we have to forgo buttons for a car based service book, I'll buy a ring binder  :grin:
Title: Re: Can you use OBDeleven to tell how often the VAQ has engaged?
Post by: joe6 on 03 November 2021, 22:38
and with regard to the VAQ Diff, AwesomeGTI recommend 20k if you're an aggressive driver or 30k miles if you're normal. Interesting they don't specify a time interval, but given most of us will be doing around 6-10k miles a year, you could probably say 3/4 years.

I would think usage/ mileage much more important than time. These oils don’t degrade over time.
Vwvortex site has a quote from a vw maintenance manual from 2015 stating 3 years for gti pp but I agree with you that mileage is probably more important and type of usage.
Title: Re: Can you use OBDeleven to tell how often the VAQ has engaged?
Post by: JMS on 03 November 2021, 23:15

To the OP, I have seen a service schedule that states diff oil change every three years.

Get it done at an independent specialist though, and ask them to clean all the gunk from the filter. VW will only change the fluid, not the filter. (If they even know what you are asking about).

Take a look on some of the golf R forums at the amount of crud they get in their Haldex filters.
Title: Re: Can you use OBDeleven to tell how often the VAQ has engaged?
Post by: Yusee on 04 November 2021, 06:20

To the OP, I have seen a service schedule that states diff oil change every three years.

Get it done at an independent specialist though, and ask them to clean all the gunk from the filter. VW will only change the fluid, not the filter. (If they even know what you are asking about).

Take a look on some of the golf R forums at the amount of crud they get in their Haldex filters.

That’s a very good suggestion, and you’ve helped me make my mind up.
Swapping the oil out, either myself or through VW, is probably pointless.
I’ll wait until about 30k then do just that at a good independent.
Title: Re: Can you use OBDeleven to tell how often the VAQ has engaged?
Post by: Coolhandluke on 04 November 2021, 20:43
I would think usage/ mileage much more important than time. These oils don’t degrade over time.

Saw a post earlier on that said "Volkswagen state a 30k/3 year service interval for the VAQ diff", if I find it again I'll post it.

 
To me this just highlights the downside of not having a physical handbook anymore listing the schedules, I guess I'll ask at my year three service next March.

Even a digital handbook in the car through the radio would be handier like those in modern BMW/Minis that tell you oil, coolant, brake fluid and brake pad life expectancy.

Rather than one you have to go to a dealership and get printed off

It's on the mk8...

Never mind if we have to forgo buttons for a car based service book, I'll buy a ring binder  :grin:

I just bought a VW service record book of Ebay.
I'll use it to tick the various boxes for what's been done and store the receipts etc
Title: Re: Can you use OBDeleven to tell how often the VAQ has engaged?
Post by: JMS on 05 November 2021, 14:08
Here are the repair manuals, but I haven’t tracked down the e-diff section yet…

https://www.dropbox.com/sh/f99kqqmv66pryib/AAA5LM_C4H6x4l56StzU9YO9a?dl=0

I think VW have changed the guidance, and varied it around the world.

This pic clearly answers the frequency question. But some manuals don’t have this line at all.

The more important thing is to clean the gauze filter. VW only change the fluid.

https://www.golfmk7.com/forums/proxy.php?image=http%3A%2F%2Fi.imgur.com%2FT1AegNFl.jpg&hash=32d58c5fde0b6a9583ad74b933e60ede

Hope that helps those looking for the service manuals.
You can also pay vw for 1day or 3day online access, which will only show detail relevant to your variant.


Title: Re: Can you use OBDeleven to tell how often the VAQ has engaged?
Post by: joe6 on 05 November 2021, 14:52

[/quote]
I just bought a VW service record book of Ebay.
I'll use it to tick the various boxes for what's been done and store the receipts etc
[/quote]

Just done the same. £8. It will give me a bit more peace of mind having a physical  list to check rather than a bland statement ' serviced according to manufacturers requirements'.
Title: Re: Can you use OBDeleven to tell how often the VAQ has engaged?
Post by: madstaff on 05 November 2021, 16:27
One question nobody seems to able to answer for certain is whether its absolutely necessary to relearn the Haldex pump settings after changing the oil and cleaning the filter as described here.


https://www.haldexrepairs.co.uk/guide-to-front-e-diff-lock-lsd-on-golf-gti-autobahn-seat-leon-skoda-octavia/
Title: Re: Can you use OBDeleven to tell how often the VAQ has engaged?
Post by: clubsport on 05 November 2021, 16:34
Madstaff I thought you were going to enlighten us once you got hold of a Vagcom?
Did you get round to changing the fluid, servicing your diff yet?
Title: Re: Can you use OBDeleven to tell how often the VAQ has engaged?
Post by: madstaff on 05 November 2021, 16:41
Not got round to it yet as I need to buy a laptop as well as VCDS.
Title: Re: Can you use OBDeleven to tell how often the VAQ has engaged?
Post by: willni on 05 November 2021, 22:06
Not got round to it yet as I need to buy a laptop as well as VCDS.

What kind of info do you need? I've VCDs so I may be able to get the info you're after  :smiley:

Also who actually manufactures the VAQ diff? Borg Warner? If so it might be worth asking them what they would recommend as a service interval, as I distinctly remember one DSG gearbox being specified as non-serviceable by VW but the manufacturer stated 60/80k mile oil change when enquired. 
Title: Re: Can you use OBDeleven to tell how often the VAQ has engaged?
Post by: madstaff on 05 November 2021, 22:23
It's not really info I need, I am uncertain as to if a Haldex pump relearn is strictly necessary after an oil change and filter clean, which is why I've not done mine yet as I don't have VCDS.
Title: Re: Can you use OBDeleven to tell how often the VAQ has engaged?
Post by: Rudedog on 06 November 2021, 09:13
I know what you mean... when you watch a full Haldex FWD service they use VCDS to cycle the pump, and I guess as the VAQ effectively works as half a Haldex system then it might be needed... would be nice to find out (not that I'd ever be able to do mine DIY).
Title: Re: Can you use OBDeleven to tell how often the VAQ has engaged?
Post by: joe6 on 06 November 2021, 09:15
I have contacted borgwarner about the vaq (front cross drive fxd) servicing requirements. Just wait to see if I get a response.
Title: Re: Can you use OBDeleven to tell how often the VAQ has engaged?
Post by: Yusee on 07 November 2021, 08:29
On the issue of service schedule- though I’m sure many people already know- shopdap.com is a very good resource-

https://www.shopdap.com/blog/post/service-schedule-for-mk7-5-gti-2018-2019.html

Print a copy of this, keep it in a file with all receipts.

Better than any stamped service book.
Title: Re: Can you use OBDeleven to tell how often the VAQ has engaged?
Post by: joe6 on 07 November 2021, 10:29
Watched several videos but had not come across this list. Thanks. :smiley:
Title: Re: Can you use OBDeleven to tell how often the VAQ has engaged?
Post by: Yusee on 07 November 2021, 13:47
No problem. Yes, his videos are excellent. That rare combination of a technical expert who communicates well.