Hi all.

 

Just a quick update. 

 

I decided to go with ECU testing in the UK. I shipped the unit @ 3 o clock on Monday and it was returned @11 am the following Tuesday. 

I cant fault that. 5 working days including shipping from and back to Ireland

Shipping cost 95. (they will only collect for free in the UK)

Repair cost 505 including return shipping. (No VAT or duty charged)

Oil, filter and pressure filling tool cost approx 230.

All figures in EURO.

Total 830

I tried gravity filling with a tube but it was a nightmare so bought the pressure tool. 

 

One thing that I did notice. 

 

Be careful after you fill with oil  and screw in the drain to warm the oil up. The drain picked up on the stand pipe as I was running it in and initially stopped short of fully home. Luckily I noticed it wasn't home before tightening fully as I could have stripped the plastic threads.

I backed off and ran it up again slowly. This time it picked up on the stand pipe and it wound the pipe in ahead of it. I only discovered this when I went to wind the stand pipe in 2 turns only to find it nearly fully home. 

I had to back it down 2 turns to let it drain. 

I haven't heard anybody mention this before so found it a little strange.  DUNNO!!

 

It did throw up a lot of faults after, including gearbox / clutch faults which wouldn't initially clear so I had to carry out the basic settings . (Lots of strange noises and clunking when you do that).

That cleared it.

 

I have about 1500 miles on it since and no problems, so I happy out!!

 

May need to pick your brains for some advice on this. We have had almost the exact same issue occur. Driving along nicely on the way back from holiday and emergency gearbox warning came on. AA came out and could only see a clutch position sensor fault so cleared it and we went on our way slowly sticking to 50 with the automatic grabox not really needing to shift. Got another 100 miles and it came on again. If we do find out its this, we are UK based. Did you say you found some UK options for a similar repair rebuild? Any advice greatly appreciated. We are in a skoda karoq 2018 DSG automatic. Dan

I'd have to do a search again, but if I remember there was ECU Testing and VCUS and a few others. Do a search for DQ381 pressure switch repair.

But check with your garage first, make sure they are happy going this route. If it fails under warranty you'll be caught for the labour and oils.

As per defsix's first post

Transmission-online.shop 

ECU Doctor

ECU.de 

I used ecu testing

https://www.ecutesting.com

They are UK based And I found the service very good

I have approx 20K miles up since and all is good.

It will require you, or your mech to strip, ship and rebuild on return.

It threw up a lot for faults that had to be cleared using a reader and doing the basic settings.

Not a job for the faint hearted, but the videos ECU testing have on u tube are very good and will talk you through it.

I recommend a pump for filling as it takes 6 to 7 L to fill..

Fionn

Thankyou both for your responses. Its in the garage now to be plugged in and see if its thrown up the same fault code again. So frustrating if it is this isn't it as it's an awful lot of work and expense for 2 small sensors. Such is life with modern cars I guess. Fionn are you able to give a rough idea of your all in cost? Cheers, Dan

Roughly 800 euro.

500 euro to ecu testing for the repair an the remainder on shipping, oil, Filter an a pump.

I didn't use OEM oil though.

I was around the same. Definitely need a pump for the oil though 😁

Thamkyou again. Sorry last question. Can you drain just the mechatronics sump on its own? I was under the impression on some its separate to the gearbox sump and a different hydraulic oil?

No, it's all got to come out.

@danielwattsup Is it a 7 speed wet clutch DQ381 DSG that your 2018 Karoq DSG has?

One oil in box and MCU.

& Not a 7 speed twin dry clutch DQ200 DSG with 2 oils, in the box and the MCU.

It seems to suggest it is the wet clutch when I search it up as ours is the 7 speed DSG 4x4. Most areas seem to suggest the dry clutch was only on front wheel drive models with lower torque.

That is correct,

FWD , 250 Nm or under and max 192 PS with a Polo 1.8 TSI GTI DSG.

But you never posted that you had a AWD 4x4. So we / i were left to assume you had what the OP posted about. Or were asking about draining a DQ381,s MCU.

A 2018 Karoq could be a 1.0 or 1.5 TSI ACT or a 1.6 TDI without AWD. So a DQ200 DSG.

2 Oils, and you can just drain the MCU.

Edited 1 September, 20251 Sep by Ootohere

Sorry not gonna lie I'm really not too proficient in cars. Learning along the way. It was only when you had mentioned wet and dry clutches that I had looked further and saw it mentioned 4 x4 which jogged my memory. It wont be me doing it but were just assessing whether we need to get it into an automatic gearbox specialist or whether our local garage could do the drain down and removal. Having looked again our Karoq is a 2 litre 4 x 4 DSG. I had just seen a video where it said that some have separate sumps with 2 different types of oil. Thanks for your help and interaction so far.