DCT is angry

Eh bien, je peux être effed!

J’ai une E90 DCT 2011 et je la conduis honnêtement comme une grand-mère. Je vieillis et j'ai des enfants, donc je ne vais plus travailler en faisant 110 dans la voie d'urgence.

L'autre jour, j'ai eu des cheveux sauvages pour brûler du caoutchouc. Je me suis arrêté dans une zone industrielle vacante, je l'ai mis en mode manuel et en 1ère vitesse et j'ai martelé le gaz.... pas de rotation des pneus, mais il a accéléré rapidement jusqu'à ce que j'arrive à 5k tr / min. J'ai alors expérimenté ce que j'avais l'impression de sortir du train et je me suis arrêté. La lumière trans est apparue sur le tableau de bord, alors je suis passé au neutre, puis je suis revenu au premier et j'ai doucement quitté. La lumière s'est éteinte et tout semblait normal.

environ un mile sur la route tout en faisant environ 30 mph je l'ai plancher et il semble normal pendant quelques secondes, mais puis il a coupé le pouvoir et la lumière trans temp est venu.

Je l'ai conduit une fois depuis et tout semble aller bien.

Une idée de wtf est en train de se passer ? sac d'embrayage glisser? Un toast trans ?

Ces trans sont presque indestructibles. Je ne m'inquiéterais pas qu'il soit mort.

Quel code la voiture lance-t-elle ? Peut-être que vous avez la fuite DCT typique qui a suffisamment fui là où il n'y a plus assez de liquide.

Oui, le liquide faible est le coupable habituel en raison d'une casserole qui pleure.

I was honestly hoping that wouldn't be the case. This tranny had a previous leak while it was under warranty. BMW preformed a trans pan, gasket replacement and I've had a gut feeling since then that they didn't put the correct amount of fluid back in. Ever since then trans service, it seemed slightly noisier during gear changes, especially from N-1.

Because of the specific process required to change the fluid, what does a change cost? mine was under warranty so I don't know what it was.

328inOR wrote

I was honestly hoping that wouldn't be the case. This tranny had a previous leak while it was under warranty. BMW preformed a trans pan, gasket replacement and I've had a gut feeling since then that they didn't put the correct amount of fluid back in. Ever since then trans service, it seemed slightly noisier during gear changes, especially from N-1.

Because of the specific process required to change the fluid, what does a change cost? mine was under warranty so I don't know what it was.

There is a DIY DCT Fluid Change HERE---> https://www.m3post.com/forums/showthread.php?t=746269 that shows how to change your fluid. You could use the end of the procedure to add fluid. The gist is that you want to run the engine at 2000RPM for a minute, then get under the car (with it running) and add more fluid until fluid seeps out the fill hole. This should be done fairly quickly so that your DCT fluid temp does not exceed 104 degrees. It's not as scary as you may think, and given your experience and the suggestion that you may have low fluid, you may get greater peace of mind from knowing that you did it the right way, yourself.

i suggest you just refill it yourself. It isn't very hard. It'll make the car happy again and you don't have to worry. I'd use the GTS fill process and feed it an extra quart

SYT_Shadow wrote

i suggest you just refill it yourself. It isn't very hard. It'll make the car happy again and you don't have to worry. I'd use the GTS fill process and feed it an extra quart

Agreed, I did a DCT flush/fill with new fluid and it was much easier than expected. I also replaced the filters while I was in there.

Not a difficult job.

WhiteM3EMC wrote

328inOR wrote

I was honestly hoping that wouldn't be the case. This tranny had a previous leak while it was under warranty. BMW preformed a trans pan, gasket replacement and I've had a gut feeling since then that they didn't put the correct amount of fluid back in. Ever since then trans service, it seemed slightly noisier during gear changes, especially from N-1.

Because of the specific process required to change the fluid, what does a change cost? mine was under warranty so I don't know what it was.

There is a DIY DCT Fluid Change HERE---> https://www.m3post.com/forums/showthread.php?t=746269 that shows how to change your fluid. You could use the end of the procedure to add fluid. The gist is that you want to run the engine at 2000RPM for a minute, then get under the car (with it running) and add more fluid until fluid seeps out the fill hole. This should be done fairly quickly so that your DCT fluid temp does not exceed 104 degrees. It's not as scary as you may think, and given your experience and the suggestion that you may have low fluid, you may get greater peace of mind from knowing that you did it the right way, yourself.

I was not able to add enough fluid following this procedure.
I drained almost 6 quarts and was only able to add 5 back.
I ended up following GTS filling process and added almost 7 quarts in the end.