⚠️ Requires an already activated Kess3 Master Alientech device.
This product is a software extension, not a device.



Activation of TCU protocols for KESS3 Master, enabling reprogramming of automatic gearbox control units.
This activation gives access to transmission parameters: shift points, shift times, hydraulic pressure and maximum input torque. It covers several thousand vehicles.
Automatic gearbox optimisation is most often carried out alongside engine remapping. On a vehicle where torque has been increased, the factory input limit of the gearbox can cap the gains achieved.
In Master version, read files can be modified in-house or sent to a tuner of your choice.
VAG Group DSG mechatronics are handled in Bench mode and require the corresponding connector: DQ200 (ref. 144300K254), DQ250 (ref. 144300K267), DQ500 (ref. 144300K259) or DL501 (ref. 144300K265).
Pairs well with
Remote activation within 24/48 hours
Interest-free installment payments
Technical support in French

KESS3 Master - TCU Protocol Activation
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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⚠️ Requires an already activated Kess3 Master Alientech device.
This product is a software extension, not a device.
WHAT THIS PROTOCOL COVERS
KESS3 processes engine control units (ECUs) by default. This activation adds support for transmission control units (TCUs).

It is useful if you also work on automatic gearboxes, cloning or reprogramming, in addition to the engine control unit.
ECU
Already covered by your vehicle protocols by category (Cars/LCVs, Motorcycles/Quads/UTVs, Agriculture/Heavy Trucks/Buses, Boats/Jet Skis).
TCU: this product
Requires this dedicated activation, distinct from engine protocols.
Complete Service
Activate the ECU and TCU to offer engine and gearbox cloning and reprogramming on the same vehicle.
Activation is performed remotely on your KESS3 Master device, using your Alientech ID, within 24 to 48 hours after your order
No: activation is permanent for the chosen category and mode. Only vehicle compatibility updates are covered for 12 months, and are then renewable.
Yes, each category and mode can be ordered separately or in a pack. You can complete your KESS3 Slave as your activity progresses.
No, this is a software extension: it requires a KESS3 Master Alientech device that you already own and have activated.
No, it is complementary: you must already have an active vehicle protocol for the category concerned before adding TCU support.
It does not appear in the current Slave catalog, contact our support to check availability for your configuration.
The content of the protocol (vehicles and modes covered) is identical; only the product reference changes depending on your device version.


Votre panier contient un protocole. Renseignez le numéro de série de votre KESS3 pour finaliser la commande.
Veuillez saisir le numéro de série de votre KESS3 avant de continuer.