12/10/2026
Locked gearbox? Not anymore.
If your DSG has that dreaded "401" bootloader (most 2022+ VW, Audi, Cupra & Skoda models with the DQ381 G2 or ZF8), it's been locked out of tuning — factory security stopping any TCU modification through the usual channels.
RacingLine's new CommsLink Unlock changes that.
✅ No mechanical changes
✅ No mechatronics swaps
✅ No stripping the transmission down
✅ Done in minutes, plug and play
Once unlocked, your gearbox is ready for RacingLine's Dynamic TCU Software — sharper shifts, higher torque handling, and a transmission that finally keeps up with your tuned engine instead of holding it back.
Got a locked '401' box and want to unleash it? We're OEM+ certified and ready to help.
Not sure if yours is compatible? Send us your REGO or VIN and we'll confirm it for you.