The tool
Your success is our success – therefore it is important for us to give you market leading tools to be able to do the job right first time. We, the Xtremetuning team, bring the Kess3 tool to the members of our New Zealand wide dealer network. This tool is perfect for young engine enthusiasts to the most specialized mechatronic technicians with a quick and simple interface to any engine control unit and automatic gearbox on the market.
KESS3 Slave tool
Kess3 slave tool codename: KESS3HW000S
END-OF-YEAR PROMO!
Save 40% on all Kess3 protocols when purchasing a new tool!
$ 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.