1. A very slight but noticeable whine from the DCT is normal but it should not have come only after your 1200 mi service
2. The 1200 mi service is not a "DCT service", it is an engine fluid and other fluids replacement.
3. I expect there is nearly a zero chance that they mistakenly changed your DCT fluid but it did happen to quite a few cars and most got the wrong fluid and had serious tranny problems that resulting in them being replaced. Double check with your dealer on this.
E92 M3 | Space Gray on Fox Red | M-DCT | CF Roof | RAC RG63 Wheels | Brembo 380mm BBK |
| Vorsteiner Ti Exhaust | Matte Black Grilles/Side Gills/Rear Emblem/Mirrors |
| Alekshop Back up Camera | GP Thunders | BMW Aluminum Pedals | Elite Angels |
| XPEL Full Front Wrap | Hardwired V1 | Interior Xenon Light Kit |