DCT clutch needs replacement at 98K miles

[ThePoonTang]

Not to thread jack or start a fluid argument, but what would the community suggest for DCT fluid.

Oem?

Motul DCTF?

[irokwrx]

Originally Posted by SLBMW

Had a similar issue however when I did the fluid change I noticed my fluid pump was cracked. Not sure how but it may be a possibility for you as well? The P/N is 28107842838

Was that a simple replacement? It looks like it's one bolt and it gets pushed in place. Am I correct?

[adit313]

Thanks for all the help, just wanted to post a message 3 years down the line in case anyone else has these same issues.

Turns out to be a giant nothing burger. BMW Dealership tech was completely off about it, I appreciate all the advice. Ended up taking it to an indy shop and had them change fluids and filters in the transmission and it's been running fine ever since. Haven't had any issues in the past 3 years since that was done.

It's still the same pain in slow speed traffic, but as all the DCT owners know, that's just how it comes from the factory.

[Helmsman]

Originally Posted by adit313

Thanks for all the help, just wanted to post a message 3 years down the line in case anyone else has these same issues.

Turns out to be a giant nothing burger. BMW Dealership tech was completely off about it, I appreciate all the advice. Ended up taking it to an indy shop and had them change fluids and filters in the transmission and it's been running fine ever since. Haven't had any issues in the past 3 years since that was done.

It's still the same pain in slow speed traffic, but as all the DCT owners know, that's just how it comes from the factory.

Sounds great. Regarding the slow speed issues, depending on how old your car is did you ever get the DCT SW module updated? Mine's 2011 so can't say the latter updates made a big difference but from what I've seen people with older car/DCT SW get a good improvement by the update.

[tdott]

Did they ever try a clutch relearn in ISTA?

Usually if there is an issue, it will fail and say there is a hardware related issue.

[Tibi_M2]

Originally Posted by irokwrx

Was that a simple replacement? It looks like it's one bolt and it gets pushed in place. Am I correct?

Hi, did you change this pump meanwhile? 28107842838
I did not see any wiring for it, how it gets electricity?

Probably mine one is cracked as well!

[Tibi_M2]

Originally Posted by SLBMW

Had a similar issue however when I did the fluid change I noticed my fluid pump was cracked. Not sure how but it may be a possibility for you as well? The P/N is 28107842838

hi, same question for you as i just made above, just want to be sure i will get reponse, this pump is electric? cause i don't see any wiring connection, there is some strange pump sound coming from my dct, 5-7 times in each minute only just in neutral! Thats the reason im investigating now! Bmw said normal as always

Thanks

[M3JayM]

Originally Posted by adit313

It's still the same pain in slow speed traffic, but as all the DCT owners know, that's just how it comes from the factory.

I would very highly recommend a DCT GTS tune from somewhere like Alpine. Tremendous improvement on this exact issue.

[Helmsman]

Originally Posted by Tibi_M2

hi, same question for you as i just made above, just want to be sure i will get reponse, this pump is electric? cause i don't see any wiring connection, there is some strange pump sound coming from my dct, 5-7 times in each minute only just in neutral! Thats the reason im investigating now! Bmw said normal as always

Thanks

Whats the noise like, care to post a video?

[Tibi_M2]

Originally Posted by Helmsman

Whats the noise like, care to post a video?

here is the DCT noise as you asked for!

[Helmsman]

Originally Posted by Tibi_M2

here is the DCT noise as you asked for!

Thanks, nope, don't recognise that noise.

[DrFerry]

Originally Posted by Tibi_M2

here is the DCT noise as you asked for!

Read this thread.
https://www.m3post.com/forums/showthread.php?t=1974649
.
Your DCT fluid is too low due to leaks, or incorrect fill method. The DCT sump system has two immediately serviceable parts- the low pressure filter and the sucking jet pump. Much is seen and heard about servicing the sump filter but rarely does anyone mention the sucking jet pump. An odd term for a part- it is a combination anti-return check valve and venturi pump.

[tdott]

Originally Posted by Tibi_M2

here is the DCT noise as you asked for!

sounds kinda like a power steering whine? Is your PS fluid level good?

Hard to say for sure.

[Redd]

PS whine like that usually happens when u turn the wheel.

If it's coming from DCT then I also suspect low fluid level. If you haven't done your DCT fluid in a while I'd flush and replace the fluid following the proper fill procedure.

[Tibi_M2]

Originally Posted by Redd

PS whine like that usually happens when u turn the wheel.

If it's coming from DCT then I also suspect low fluid level. If you haven't done your DCT fluid in a while I'd flush and replace the fluid following the proper fill procedure.

Dear Redd, its from the dtc for sure, cause its just coming from Neutral, each minute 6 times, after silence, but if i change the gear to 1 or R meanwhile the noises, that it stops immediatelly! So no connection with wheels!

[Tibi_M2]

Originally Posted by tdott

sounds kinda like a power steering whine? Is your PS fluid level good?

Hard to say for sure.

It's for sure from the DCT, as i wrote above, for the previous comment
The noise comes exactly 7 times in 1 minute after silence, that 7 times after silence and so oon, but the gearbox should be in N(eutral).

If i change the gear to 1 or R meanwhile after the 1st noise, then the rest 6 wont come, and it would be silent forever, so its only a neutral issue, i lifted up the car and its 100% coming from the dct as well!

[Tibi_M2]

Originally Posted by DrFerry

Read this thread.
https://www.m3post.com/forums/showthread.php?t=1974649
.
Your DCT fluid is too low due to leaks, or incorrect fill method. The DCT sump system has two immediately serviceable parts- the low pressure filter and the sucking jet pump. Much is seen and heard about servicing the sump filter but rarely does anyone mention the sucking jet pump. An odd term for a part- it is a combination anti-return check valve and venturi pump.

Dear DrFerry, i checked the sucking jet pump, but is it electrical, i don't see any wiring around, but based on the noise, some pump is switching on and of, so some electric staff should be in the background!

Thanks

[DrFerry]

Originally Posted by Tibi_M2

Dear DrFerry, i checked the sucking jet pump, but is it electrical, i don't see any wiring around, but based on the noise, some pump is switching on and of, so some electric staff should be in the background!

Thanks

Yes, as far as I know the pump is electrical. There’s a wiring loom on the top of the DCT housing that is difficult to see. The loom also connects to the DCT DME computer. Your DCT fluid level is low. Look up the BMW procedure for refilling it. Search the forums.

[M3SQRD]

Originally Posted by Tibi_M2

Dear DrFerry, i checked the sucking jet pump, but is it electrical, i don't see any wiring around, but based on the noise, some pump is switching on and of, so some electric staff should be in the background!

Thanks

I agree with Redd and DrFerry. Your DCT fluid level is low. In N, does it make the noise seven times per minute for the first minute only or does it continue to repeat the noise for the second minute, third minute…?

[Tibi_M2]

Originally Posted by M3SQRD

I agree with Redd and DrFerry. Your DCT fluid level is low. In N, does it make the noise seven times per minute for the first minute only or does it continue to repeat the noise for the second minute, third minute…?

Dear M3SQRD,

I spend infinite time to go around this problem, this is happening continuesly, just as the gearbox or the engine or the clutches warm and warm more, the sound become more silent and silent, in the beginning its possible to hear from the interior(without music of couse, but with running engine of course) later its possible to hear only when you go close to the dct for instance when you lift it up, but as long you hold it in gear one or R, it never comes, so so so strange!

[Tibi_M2]

Originally Posted by DrFerry

Yes, as far as I know the pump is electrical. There’s a wiring loom on the top of the DCT housing that is difficult to see. The loom also connects to the DCT DME computer. Your DCT fluid level is low. Look up the BMW procedure for refilling it. Search the forums.

Thank you i will order a new one then, and i will check the fluid level!

[DrFerry]

Originally Posted by Tibi_M2

Thank you i will order a new one then, and i will check the fluid level!

I doubt you need a new pump you just need to add enough fluid for the pump to grab instead of air.