The tool
Your success drives our success, which is why we’re committed to equipping you with industry‑leading tools that help you get the job done right the first time. Whether you are a busy workshop, a fleet owner, or a service contractor, you can rely on the Kess3 platform – a versatile solution trusted by everyone from emerging engine enthusiasts to highly specialised mechatronic technicians. Its streamlined interface provides fast, reliable access to virtually any engine control unit or automatic transmission on the market.
KESS3 Slave tool
In stock
$ 1,600.00
The KESS3 Slave is a high-performance ECU flashing tool tailored for chiptuning professionals. Engineered to read and write ECU files prepared by a KESS3 Master, it streamlines the remapping process with a fast, secure, and intuitive interface—making precision tuning more efficient than ever.
KESS3’s Key Features:
- Effortless ECU Flashing – Enables reading and writing of ECU files provided by the Master tool for streamlined tuning.
- Automatic Checksum Correction – Validates file integrity during flashing to prevent compatibility issues.
- Guided Workflow – Built-in visual instructions simplify each step for a smooth and efficient process.
- Live Software Updates – KESS3 updates automatically whenever connected, ensuring optimal performance.
- Smart Vehicle Lookup – Instantly locate supported vehicles using the intuitive menu system.
- Real-Time Voltage Monitoring – Displays live battery voltage to maintain stability during read/write operations.
- DTC Auto-Check – Automatically scans for diagnostic trouble codes (DTCs) when writing files.
- Flashing Recovery Mode – Safeguards the ECU against disruptions during flashing, minimizing risk of damage.
Designed for automotive tuners, workshops, and performance experts, the KESS3 SLAVE is an essential tool for precision ECU remapping.
| Weight | 4 kg |
|---|---|
| Dimensions | 57 × 15.5 × 44.5 cm |
We automatically assign your new KESS3 slave tool to Xtremetuning’s Master tool and sign you up for a File Service so you can start uploading jobs immediately.
To operate the Kess3 slave tool, you’ll need to configure it by selecting and adding your preferred protocol bundles from the options below. Please note that the Kess3 slave tool operates on an annual subscription basis, currently priced at NZ$1240 per year. First year’s subscription is included in tool’s price.
Backed by three decades of expertise and nearly three years of dedicated development, KESS3 represents a landmark achievement in the Chiptuning industry. It delivers a revolutionary blend of functionality, convenience, and versatility that sets a new benchmark in the market.
Engineered for everyone—from passionate car enthusiasts to advanced mechatronics professionals—KESS3 offers seamless access to virtually any engine or transmission control unit. Its powerful performance, flexible operation, and intuitive design empower users to interface effortlessly with vehicle systems using a single, all-in-one tool.
KESS3 is unique, extraordinary with no equal in the market, in terms of functions, convenience, and versatility.
All in One. OBD, Bench and Boot mode.
KESS3 integrates three powerful operating modes - OBD, Bench, and Boot- into a single versatile tool.
Configure it to suit your workflow and expertise. Whether you're just starting out or a seasoned remapping professional, KESS3 delivers top-tier performance tailored to your needs.
Renewed Architecture
Every element of KESS3 has been meticulously engineered to deliver exceptional performance, adaptability, and user-friendly operation.
Its redesigned architecture maximizes the capabilities of each component, ensuring optimal efficiency and reliability.
Innovative Design
The KESS3 features an all-new case design.
Developed through extensive research to incorporate premium, high-performance materials - adding both functional value and durability."
Alientech Suite
This cutting-edge hardware inspired the development of a completely reimagined software suite.
Redesigned from the ground up in both architecture and interface - to fully harness its capabilities.
THREE OPERATING MODES
OBD Mode
With the OBD mode, you can easily access all the ECU data through the diagnostic socket.
BENCH Mode
A simple interface to the connector and you have complete access to the data of your ECU.
BOOT Mode
This mode allows you to access all system data areas. Read, Write and Clone.
RENEWED ARCHITECTURE
Since 1991, the team has been at the forefront of ECU remapping tool development.
Fueled by a commitment to excellence, they’ve infused decades of engineering expertise into the creation of KESS3.
Every detail of the tool is purposefully crafted to deliver outstanding performance, operational versatility, and intuitive usability.
Its advanced architecture leverages the full power of cutting-edge components—including a next-generation microprocessor, high-speed flash memory, enhanced I/O interface, and integrated hardware sensors—to set a new standard in tuning technology.
INNOVATIVE DESIGN
The KESS3’s case design stands out for its innovation and durability. Developed through extensive material research, it combines rugged mobility with versatile functionality.
Its fiberglass shell offers both lightweight flexibility and ergonomic strength, built to withstand shocks and vibrations without compromising performance.
Whether you’re in the workshop or out in the field, KESS3 is engineered to keep up—built for professionals who never stop moving.
KESS3 CASE
KESS3 is built with precision and practicality in mind—every component is thoughtfully arranged for optimal workflow. Security is paramount, because your business can’t afford interruptions.
Inspired by military-grade design, the case features upper housings for organized storage, a pressure valve for safe air transport, and a snap-lock closure for maximum protection.
A built-in counter stop prevents clutter, making it ideal for tight workspaces. And when KESS3 travels, it brings everything you need—complete with essential accessories to keep you fully equipped wherever you go.
CASE CONTENTS
USB Cable – Enables direct communication between the KESS3 unit and your PC for seamless operation.
Next-Generation OBD Cable – Consolidates all communication lines used by major automotive manufacturers into a single, versatile cable. It replaces multiple legacy connections from KESSv2 and ensures compatibility with brands such as Honda, Volvo, Lotus, and Toyota.
1400SWALIM Power Supply – Delivers stable and reliable current and voltage, ensuring safe and consistent communication with electronic control units (ECUs).
144300TALI Cable – Used to power the KESS3 unit via a bench power supply (note: power supply sold separately).
144300KBNC Cable – Enables direct communication with control units during bench operations.
144300KTER Cable Pack – A complete extender kit equipped with all the essential cables required for BENCH and BOOT mode operations.
144300T104 – IDC 26-10 Cable: Features 10 wires for direct connection to the ECU’s electronic board.
144300T105 – IDC 26-16 Cable: Equipped with 16 wires, designed for direct interfacing with the ECU board.
144300T106 – IDC 26-26 Cable: Contains 26 wires, enabling full direct access to the ECU’s electronic circuitry.
KESS3 SUITE
A completely redesigned and new suite, in design and architecture
NEW DESIGN
New look, clean design, everything you need at your fingertips. Updated regularly to be functional, usable and easy.
VEHICLE DATABASE & CONTROL UNITS
List of protocols and vehicles updated daily and always available online. Technical instruction available in multi- language to support users during the most complex operations.
USER EXPERIENCE
A completely renewed UX. An intuitive dashboard with improved access to the vehicle list with the ability to create a list of favorite vehicles and a view of the history of vehicles already interfaced.
PERFORMANCE
The new interactive “search” function will allow you to access the vehicle list or search for the microprocessor of your ECU in a few seconds. Downloading and updating the list are now instant.
SUPPORT
Direct access to the this help desk and all development news
FAQ’S
How can I interface and program the control units?
With KESS3 you can program the engine control units (ECU) or transmission control unit (TCU) in three different ways:
OBD – With the OBD mode, you can easily access all the ECU data through the diagnostic socket.
BENCH – With the Bench mode you can access the ECU data directly from the connector
BOOT – With Boot mode, with the engine control unit opened, you could connect directly to all the memories of ECU/TCU.
What is a Slave tool?
The KESS3 Slave tool serves as the primary interface for dealers during the tuning process. Each Slave is paired with a Master tool, which functions as the backend system responsible for file decryption and modification. This Master tool is managed by your tuning file provider, Xtremetuning Limited.
What types of vehicles are supported?
KESS3 supports hundreds of thousands of vehicles—including not just engine control units (ECUs), but also transmission control units (TCUs) found in cars, motorcycles, tractors, trucks, and boats. For a complete overview of supported models, simply refer to our comprehensive vehicle list.
What will happen to the file that I read with Kess3?
Once you saved the ECU file onto your computer, you log into the File Service and upload it for modification. In that upload process you basically create a new job, specifying what vehicle you work on and what services you need. The tuner at the back-end will then tailor the file to your specific tuning requirements, ensuring optimal performance and compatibility.
Where can I sign up for a File Service?
To get started with our tuning File Service, simply complete the contact form above. Once we receive your information, we’ll perform a quick verification and activate your access – so you can begin working on your first tuning project right away.
KESS3 introduces the Bench protocol for Continental SID212.
One of the most requested ECUs on the market can now be worked on directly in the workshop with KESS3.
Alientech further expands the operational possibilities offered by the KESS3 platform with the release of the new protocol dedicated to Continental SID212 ECUs.
Present for years on numerous diesel applications, including Ford 2.0 EcoBlue, SID212 ECUs represent one of the most requested solutions among workshops specialised in calibration and electronic programming.
With this update, Continental SID212 ECUs can be managed in Bench mode directly with KESS3, allowing professionals to work on the ECU directly in their own workshop, without sending it to external services for unlocking or preparation procedures.
This translates into concrete advantages for everyday work:
greater operational autonomy
faster handling times
no additional cost per ECU
Once the ECU is connected in Bench mode, the operator can proceed directly with Virtual Reading and writing operations using Alientech Suite.
The protocol is already available for both Master and Slave, for KESS3 users with CAR-LCV Boot & Bench activation and an active subscription.
A further step in Alientech’s chosen direction
With this release, Alientech confirms a clear vision: providing workshops with tools that allow them to work more independently, more efficiently and with greater operational control, without unnecessary complications and without hidden costs related to each individual job.
Support for Continental SID212 fits perfectly within this approach, offering professionals a practical, immediate solution aligned with the real needs of the market.
The protocol is already available inside Alientech Suite, together with the dedicated technical documentation.
Technical focus:
Connection: BENCH
ECU: Continental SID212
Production years: from 2017
Brands involved: Ford
Supported vehicles:
Ford Focus, Galaxy, Mondeo, Ranger, Transit, S-Max, Kuga, Edge, Focus ST, Ranger T6, Transit Custom, Tourneo Custom, Ranger Raptor. ... See MoreSee Less
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New BOOT protocol for Marelli CFC306 – Aston Martin.
Development continues on automatic transmissions installed on high-end sports platforms.
With BOOT mode support for the Marelli CFC306 TCU, coverage now extends to Aston Martin applications equipped with the 4.3 V8 engine from 2006 onwards.
This development allows you to intervene directly and in a controlled way on transmission management: truly complete access directly to the electronics. Work with the ECU open for tuning or software recovery with maximum precision on one of the most iconic configurations of the British brand.
Technical focus:
Connection: BOOT
TCU: Marelli CFC306
Production years: from 2006
Brands involved: Aston Martin
Supported vehicles:
Aston Martin Vantage, Vantage Roadster ... See MoreSee Less
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New OBD protocol for Bosch ZF8HP50 TCU – BMW 2.0d, 2.0i and 3.0i.
The expansion of the ZF8HP family continues on newer-generation BMW applications.
The designation ZF8HP50 identifies the evolution of the automatic transmission installed on models from 2015 onwards, where KESS3 enables OBD programming of the Bosch ZF8HP50 TCU. This allows direct, safe, and non-invasive intervention on transmission management.
In the workshop, this means being able to work on shift strategies and software restores with a streamlined operational workflow, on a vehicle fleet that remains central to the market.
Technical focus:
Connection: OBD
TCU: Bosch ZF8HP50
Production years: from 2015
Brands involved: BMW
Supported vehicles:
BMW 1 Series, 2 Series, 3 Series, 3 Series GT, 4 Series, 4 Series Gran Coupé, 5 Series, 5 Series GT, 6 Series, 7 Series, X3, X4, X5. ... See MoreSee Less
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New BOOT protocol for Keihin 6001-2934-000 ECU – Ducati.
First development dedicated to the MX world on Ducati’s new-generation platform.
The Desmo 450 introduces a completely new configuration for off-road racing, with a 450cc Desmodromic engine designed to deliver immediate response, high performance and maximum control in the most extreme conditions.
Thanks to BOOT mode, it is possible to directly access the Keihin 6001-2934-000 ECU and operate completely on engine management. The operation is carried out on the bench, with direct access to the control unit for structured and safe procedures.
In racing applications, this means being able to work on engine parameters and strategies with the highest level of control, optimizing power delivery according to track conditions, grip and riding style.
This represents the first step in a series of developments dedicated to the latest-generation motocross and enduro segment.
Technical focus:
Connection: BOOT
ECU: Keihin 6001-2934-000
Production years: from 2025
Brands involved: Ducati
Supported vehicles:
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New OBD protocol for Bosch MD1CS069 in the agricultural sector.
KESS3 expands support on mid-power tractors equipped with Stage V engines.
One of the most widespread platforms in the sector is now manageable directly via the diagnostic port.
With the release of the dedicated protocol for Bosch MD1CS069 ECUs, installed on 2.9, 3.4 and 3.6 Stage V engines from 2017 onwards, it is now possible to operate in OBD mode without invasive procedures on the control unit.
A practical solution for professionals working daily on these vehicles, where time and downtime directly impact productivity.
This translates into real advantages for workshops and field operations:
- direct access via diagnostic port with cable 144300K226
- fast operations without disassembly
- continuous vehicle operability
Once connected in OBD, you can perform reading and writing in a simple and linear way, optimizing repair operations and improving performance to handle even the most demanding tasks.
Technical focus:
Connection: OBD
ECU: Bosch MD1CS069
Production years: from 2017
Brands involved: Case IH, Claas, Komatsu, Landini, Massey Ferguson, McCormick, New Holland, Steyr
Supported vehicles:
Case IH A Series
Claas Elios, Nexos
Komatsu Backhoe Loaders
Landini 5 Series
Massey Ferguson MF 3
McCormick X5, X6
New Holland T4 Series, T5 Series
Steyr Kompakt
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New OBD protocol for Bosch ZF8HP50 TCU – Alfa Romeo.
The extension of the ZF8HP family continues on latest-generation Alfa Romeo applications.
The ZF8HP50 designation identifies the automatic transmission installed on Alfa Romeo models from 2016 onwards. With KESS3 it is now possible to work on the Bosch ZF8HP50 TCU through an OBD connection, enabling direct, safe, and non-invasive programming of the transmission management.
For workshops, this means the ability to operate on gear-shift strategies and transmission software recovery while maintaining a fast and streamlined workflow on vehicles that are widely present in the current vehicle fleet.
Technical focus:
------------------
Connection: OBD
TCU: Bosch ZF8HP50
Production years: from 2016
Brands involved: Alfa Romeo
Supported vehicles:
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Alfa Romeo Giulia, Stelvio
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New OBD protocol for Bosch ZF8HP75 TCU – Alfa Romeo Quadrifoglio Verde.
Development continues on ZF8HP automatic transmissions installed on high-performance vehicles.
Thanks to this update, KESS3 now allows intervention via OBD on the Bosch ZF8HP75 TCU, the transmission used on the most sporty and performance-oriented Alfa Romeo models from 2016 onwards.
On these configurations paired with the 2.9 V6 biturbo engine, designed to handle high torque levels, TCU programming allows workshops to work on gear-shift logic, transmission-side torque management, and software recovery, maintaining consistency between engine power delivery and transmission behaviour.
Work precisely on the highest-performance applications of the Alfa Romeo platform as well as on Aston Martin V12 vehicles (2021), aligning transmission calibration with the modifications applied to the engine ECU.
Technical focus:
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Connection: OBD
TCU: Bosch ZF8HP75
Production years: from 2016
Brands involved: Alfa Romeo, Aston Martin
Supported vehicles:
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Alfa Romeo Giulia Quadrifoglio Verde, Stelvio Quadrifoglio Verde
Aston Martin V12 Speedster, V12 Vantage
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KESS3 introduces DataLogger: analyse ECU parameters during real use.
Understand vehicle behaviour for maximum workshop efficiency.
Kess3 further expands the operational capabilities of the tool with the introduction of the new DataLogger function: the integrated feature dedicated to real-time ECU parameter monitoring and recording.
During a road test or dyno session, you can analyse what is actually happening inside the engine: pressures, temperatures, RPM, air-fuel ratios and many other signals.
In daily workshop operations, this translates into a concrete shift in the way you work: you can accurately understand real engine behaviour, validate calibrations based on objective data instead of assumptions, detect anomalies directly during road tests, and always have a complete history of tests available for comparison and long-term analysis.
How it works in the workshop:
---------------------------------
Connect KESS3 via OBD
Select parameters from the ECU
Start recording and analyse data
You can view up to 5 parameters simultaneously, selecting the most relevant ones for your test.
Before starting, check signals to ensure correct data acquisition.
During the test, monitor parameters in real time (numeric or graphical view), immediately verifying data consistency. You can also set thresholds to detect anomalies and add markers at key moments.
At the end of the session, all data is automatically saved in the Dashboard, ready for analysis and comparison.
You can:
- analyse test history compare different sessions
- share data with collaborators or technical support
- export everything in CSV
Repetable Tests:
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Thanks to integrated GPS, each recording includes:
Position
Altitude
Vehicle movement
This allows you to replicate the same test under identical conditions, making results comparable over time.
DataLogger is already included in your KESS3: no additional hardware, no installation, immediately available at no extra cost (with active subscription).
If you already use KESS3, you can start right away.
Technical focus:
-----------------
Connection: OBD
Real-time parameters: up to 5
Display: numeric + graphs
Functions:
pre-test signal check
min/max thresholds
markers during test
integrated GPS
Data management:
cloud Dashboard
link sharing
CSV export
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KESS3 introduces the BENCH protocol for Bosch MD1CS069 on Iveco Daily.
One of the most widespread applications in the light commercial vehicle segment can now be managed directly from the ECU connector with KESS3.
A new expansion of operational capabilities is now available with KESS3: thanks to the release of the dedicated protocol for Bosch MD1CS069 ECUs installed on Iveco LCVs, it is now possible to operate in BENCH mode, without the need for invasive operations on the control unit.
Widely used on 2.3 and 3.0 FPT engines since 2019, these ECUs represent a standard in the segment and are increasingly required by workshops working on fleets and commercial vehicles.
This translates into concrete advantages for daily work:
safe and efficient access in Bench mode
reduced intervention time
simplified management even on operational vehicles
Once the ECU is connected in BENCH mode, you can proceed directly with read and write operations, integrating the workflow in a streamlined and linear way.
The protocol is already available for KESS3 users with CAR-LCV and TRUCK-AGRI (for vehicles over 3.5 tons) BENCH/BOOT activation and active subscription.
Technical focus:
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Connection: BENCH
ECU: Bosch MD1CS069
Production years: from 2019
Brands involved: Iveco
Supported vehicles:
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Iveco Daily
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