Kodiaq 1.5 TSI Problems After Transmission Oil Change

[MrAli]

Hello, my vehicle is 2019 Kodiaq 1.5 Tsi with 103,000 km. Last week, I had my vehicle's transmission oil and transmission oil filter changed. The transmission of my vehicle is a DSG transmission type called 7-speed oil clutch with code Dq381. I added febi brand 49700 transmission oil, which I found to be compatible with this transmission. Transmission took about 5 liters of oil. I bought 7 liters of oil just in case. However, after pumping the oil, the Master drained the excess oil back through the level plug, and when bubbles started to appear, he closed the plug, saying that the level was OK. Additionally, I bought the original transmission oil filter from Skoda authorized service and had it installed. Let's talk about the problems I experienced after this oil change.
   I went on a long journey 4-5 days after changing the transmission oil. There were no problems. In fact, gear shifts have become much smoother. However, at a red light, my foot was pressing the brake fully and when the gear was in D position, a vibration came from the transmission. This is a vibration I feel in the steering wheel. Transmission oil and filter change. This vibration was definitely not there before. I can say this clearly.
The codes of the transmission oil, which is an Authorized Service product, and the febi brand transmission oil that I bought and put into the transmission are exactly the same (G055 529 A2). If there was a deficiency in the oil level or if it was the wrong oil, there would definitely be a problem in gear shifting. Like a bumpy, jerky transition. But as I said, gear shifts are like delight. There is no problem. This vibration only occurs when I'm idling and the gear is in D position with my foot on the brake. I also want to add this. This vibration at idle does not always happen. Sometimes, while waiting at a red light, the shaking starts and does not stop. When I shift the gear to N, the shaking disappears, but sometimes, under the same road conditions, when I'm waiting at a red light and my foot is on the brake with the gear in D position, there is no shaking. I couldn't understand the reason. Has anyone experienced a similar problem? If so, how did he solve it? Is there anyone who can help?

[Ootohere]

Welcome.

This might help if you have done something differently.

http://briskoda.net/forums/topic/511232-dsg-dq381

 

 

 

 

[Kenny R]

According to watching YouTube video, you’ve got to pump in 6.5 litres of oil then run engine and operate gearbox through gears and then get gearbox to 35°C and then allow the excess oil to drain out of the gearbox. There is a plastic tube in the filler/ drain that allows the correct level, and when the oil stops coming out, drain plug is replaced.

Edited 8 October, 2023 by Kenny R
Toot beat me to it and posted video :)

[MrAli]

I think when changing the transmission oil, she did not wait for the temperature to reach 35 degrees Celsius after putting the new oil into the transmission, and when bubbles appeared from the level plug, she closed the transmission oil plug. Could my problem be caused by this? I am not sure

[MrAli]

52 minutes ago, toot said:

Welcome.

This might help if you have done something differently.

http://briskoda.net/forums/topic/511232-dsg-dq381

 

 

 

54 minutes ago, toot said:

Welcome.

This might help if you have done something differently.

http://briskoda.net/forums/topic/511232-dsg-dq381

 

 

 

 

Thank you toot for the video. The procedures for changing the transmission and filter of my vehicle are almost the same. I think the only difference is that the master did not wait for it to reach 35 degrees after adding the new oil.

 

[MrAli]

I have been using my vehicle regularly for about 4 years and I am sensitive about this issue. I do not allow anyone to drive my vehicle unless absolutely necessary. While there was no vibration or vibration at idle before changing the transmission oil and filter, I think the fact that the vibration at idle occurs after changing the transmission oil and filter is actually an indication that this situation is due to the transmission. I would say that maybe the oil I use (febi 49700) is not compatible with the transmission, but its specifications match exactly with the original oil. In fact, I did not observe any problems such as knocking or jerky shifts when shifting gears. By the way, I have been driving the vehicle for approximately 1,500 km after the oil change.

[MrAli]

The vibration at idle disappears completely when I shift into N. But after a while, when I stop again, the vibration at idle starts again. And when I switch it to N again, the flickering disappears again. I can say that I experience this idling 3-5 times a day after changing the transmission oil and filter with the gear in D. By the way, I also noticed this today. After changing the transmission oil and filter, I experienced this idle vibration problem, which I experience at least 3-5 times a day, only once today. Could it be that the transmission is getting used to the new oil as the days go by? How else can I verify the transmission on my own? For example, we cannot control the level. I know that. I wonder what other way of control is there? If there is anyone who can guide me on this matter, I look forward to your help.

[MrAli]

Finally, I would like to add this. The transmission took about 5 liters of oil. In other words, 6 liters of oil was actually added, but some oil flowed back from the level plug. Is this because it did not wait for the transmission oil temperature to reach 35 degrees?

[J.R.]

It is probably nothing to do with the oil change and a coincidence, more likely to be a resonant vibration from the engine cover, exhaust heat shields or maybe something disturbed during the oil change, engine RPMs idling in D will be lower than idling in N, the slight increase in RPM is enough to stop the resonant vibration.

 

You could well be overthinking this and searching for demons that are not there.

[MrAli]

 

11 minutes ago, J.R. said:

It is probably nothing to do with the oil change and a coincidence, more likely to be a resonant vibration from the engine cover, exhaust heat shields or maybe something disturbed during the oil change, engine RPMs idling in D will be lower than idling in N, the slight increase in RPM is enough to stop the resonant vibration.

 

You could well be overthinking this and searching for demons that are not there.

Yes, maybe I'm overthinking this and this also comes to mind. Is this vibration occurring because the fluidity and viscosity of the new oil is better than the old oil? I hope that over time, as I use my vehicle, the transmission will adapt to the new oil and this problem will disappear on its own. hopefully 🙏

Edited 8 October, 2023 by MrAli

[Ootohere]

I suggest, 

 

get the bonnet open, see that all pipes and connections are OK after the filter change at the DSG service.

get it on a ramp, DSG oil up to temp and see if there is the correct amount of oil in.

 

Inspect under the car, the prop shaft / coupling.  it has done 104,000 + km. 

?

When were the spark plugs replaced?

[MrAli]

9 minutes ago, toot said:

I suggest, 

 

get the bonnet open, see that all pipes and connections are OK after the filter change at the DSG service.

get it on a ramp, DSG oil up to temp and see if there is the correct amount of oil in.

 

Inspect under the car, the prop shaft / coupling.  it has done 104,000 + km. 

?

When were the spark plugs replaced?

First of all, thank you for your suggestion. Spark plugs changed at 59,000 km. 
 

   How can I check if there is the correct amount of oil in the transmission? The only method I know is to open the transmission crankcase plug and then drain the oil until air bubbles come out of the level plug. But the oil change was already done this way. I guess the oil level cannot be monitored with OBD.

 

 

[Ootohere]

Now you know.  DSG oil up to 35*oC and that will be the correct level and then that can be discounted as causing the problem. 

[MrAli]

6 minutes ago, toot said:

Now you know.  DSG oil up to 35*oC and that will be the correct level and then that can be discounted as causing the problem. 

Yes. I should try this method

[MrAli]

Is there anyone who can tell me another possibility regarding this vibration problem at idle and when the gear is in D position?

[MrAli]

Can you recommend a device that shows the transmission oil level and where I can provide many other information about the vehicle and make minor changes? I once heard of a device called Obd Eleven Pro. Is it a useful device? Does anyone have any other suggestions?

[Paws4Thot]

59 minutes ago, MrAli said:

Is there anyone who can tell me another possibility regarding this vibration problem at idle and when the gear is in D position?

Almost certainly. I think that the most likely cause is that the incorrect fill method documented has left you with an over-filled transmission.

[MrAli]

31 minutes ago, Paws4Thot said:

Almost certainly. I think that the most likely cause is that the incorrect fill method documented has left you with an over-filled transmission.

Thank you for your comment. I think it is necessary to drain the overfilled oil.

[kodiaqsportline]

Hi.

 

You've written lots of information about how the process of how oil was changed on your car.  Who was it that changed oil?   Was this done at a garage?  Were you present when the gearbox oil was being changed?

 

My advice would be to take the car to a proper VW dealer or VW specialist and have them change the gearbox oil again a.s.a.p.   The longer you run the car the more long-term damage you could be causing if this wasn't done correctly. Even if it were just for piece of mind, I'd have the transmission oil changed again.

 

The other thing that bothers me is you say that after changing the oil, the gearshifts became much smoother. They are not supposed to become much smoother - if they do then that suggests to me there were problems with your gearbox before the oil was changed.

 

 

 

Edited 8 October, 2023 by kodiaqsportline

[MrAli]

1 hour ago, kodiaqsportline said:

Hi.

 

You've written lots of information about how the process of how oil was changed on your car.  Who was it that changed oil?   Was this done at a garage?  

 

My advice would be to take the car to a proper VW dealer or VW specialist and have them change the gearbox oil again a.s.a.p.   The longer you run the car the more long-term damage you could be causing if this wasn't done correctly. Even if it were just for piece of mind, I'd have the transmission oil changed again.

 

The other thing that bothers me is you say that after changing the oil, the gearshifts became much smoother. There not supposed to become much smoother - if they do then that suggests to me there were problems with your gearbox before the oil was changed.

 

 

 

The transmission oil and filter change was done in a garage. However, the master who performed these operations was a person who had previously worked at a VW authorized service for many years. Therefore, I handed over my vehicle to him because I trusted his transactions. Gear shifts were not too bad before the transmission oil change, but there was a partial improvement in gear shifts after the oil change. I think this softening is a normal situation that should be expected after an oil change. But as you said, it would be the right decision to change the oil again. Thank you