KESS3

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

KESS3HW000S
$ 1,820.00

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:

  • Seamless ECU Flashing – Read and write ECU files supplied by the Master version for effortless tuning.
  • Automatic Checksum Correction – Ensures file compatibility during flashing, preventing errors.
  • Integrated Step-by-Step Instructions – Embedded picture guides make the process easy and efficient.
  • Real-Time Software Updates – KESS3 automatically updates each time it’s connected.
  • Vehicle Identification System – Quickly find supported vehicles via the menu.
  • Battery Voltage Monitoring – Live voltage display ensures stability during reading and writing.
  • DTC Management – Automatically checks diagnostic trouble codes (DTCs) when writing files.
  • Recovery Mode – Protects against interruptions during flashing, preventing ECU issues.

Perfect for automotive tuners, workshops, and performance specialists, the KESS3 SLAVE is a must-have tool for professional ECU remapping.
We automatically attach your KESS3 slave tool to Xtremetuning’s ECU file service unless you tell us otherwise.

Weight4 kg
Dimensions57 × 15.5 × 44.5 cm
Must provide serial number of associated master tool to complete tool purchase

Thanks to thirty years of experience and nearly three years of development, KESS3 is the most advanced engineering achievement ever conceived in the Chiptuning industry.

It has made a significant breakthrough to create something exceptional and game-changing, which is unmatched in the market in terms of functions, convenience, and versatility.

KESS3 was designed for every person – from young people who love cars to highly specialized mechatronics technicians – to provide an easy way to access any engine or transmission control unit on the market.

Powerful performance, high operational flexibility, and ease make it possible for anyone with this one tool at their disposal to interface easily with engines and transmissions.

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 combines 3 operating modes in one tool. OBD, Bench and Boot Mode.

Configure it according to your needs and your work. Whatever your level and experience in remapping, KESS3 gives you the best.

Renewed Architecture

Every aspect of KESS3 is carefully designed to achieve performance, operational flexibility, and ease of use.

Its renewed architecture exploits the full potential of each component.

Innovative Design

KESS3 case design is completely new.

It has provided added value by researching and incorporating the best usable materials.

KESS3 Suite

Such advanced new hardware inspired us to design software that would take full advantage of its potential.

A completely redesigned and new suite, in design and architecture

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, has been designing and developing tools for ECU remapping.

Driven by the passion for excellence, incorporates all their design experience in this new tool.

Every aspect of KESS3 is carefully designed to achieve performance, operational flexibility, and ease of use.

Its renewed architecture fully exploits the full potential of each component – namely its newest microprocessor (alongside its latest generation I/O interface), high-speed flash memory storage unit, along with additional hardware sensors.

INNOVATIVE DESIGN

KESS3 case design is anything but ordinary. It has provided added value by researching and incorporating the best usable materials offering you versatile and rugged mobility.

KESS3 is built around a fiberglass shell which gives it lightness and flexibility. An ergonomic shell, resistant to shocks and vibrations means an extraordinarily strong tool that can go anywhere without being weighed down or broken easily.

Wherever you go, KESS3 can go too – this device was made for those who never stop working!

KESS3 CASE​

Ideal product arrangement, everything is exactly where it needs to be. High security, because your business must never stop.

The design derives from military studies and applications; housings on the upper part that facilitate storage, pressure valve in closing, for air transport; snap closure for maximum safety; stop on the suitcase to avoid taking up space on the counter. KESS3 does not travel alone, not only the instrument, but also all the basic accessories you need to work.

CASE CONTENTS

USB cable, needed to interface with the KESS3 instrument through the PC

The new generation OBD cable that integrates all the communication lines used by the various car manufacturers; this cable, therefore, replaces various wirings that were used by KESSv2; more specifically, it is also able to communicate with Honda, Volvo, Lotus and Toyota.

1400SWALIM power supply, capable of providing sufficient current and voltage to communicate with the electronic control units, in a stable and safe way.

144300TALI cable, to power the instrument using a bench power supply (the power supply, on the other hand, is sold separately)

144300TALI cable, to power the instrument using a bench power supply (the power supply, on the other hand, is sold separately)

144300KBNC cable to communicate with the control units directly on the bench

144300KTER pack which contains all the cables useful for connection in BENCH or BOOT mode. (extender).

144300T104 rainbow cable IDC 26-10 consisting of 10 wires, used to connect directly to the electronic board of the control unit.

144300T105 rainbow cable IDC 26-16 composed of 16 wires, used to connect directly to the electronic board of the control unit.

144300T106 rainbow cable IDC 26-26 consisting of 26 wires, used to connect directly to the electronic board of the control unit.

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

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.

As a Master user, you can read the files in clear. This allows you to operate independently in order to remap and reprogram the ECU with modified files. As a slave user, only your master will be able to decrypt your files. (Recommended choice for taking the first steps in chiptuning, supported by your Master).
Supports hundreds of thousands of vehicles. Not only engine control units, but also transmission control units equipped on cars, motorcycles, tractors, trucks and boats. To know all the vehicles that supports, you can easily consult our vehicle list.
Yes, even for you, during the trade-in phase there is an enhancement of the instrument regardless of the validity of your instrument.
YES. All KESSV2 or K-TAG accessories are and will be compatible with KESS3.
Yes. It will continue to release regular updates to the K-Suite software, but will not allow subscription renewals. Software updates, new protocols and support will be available until your subscription expires.
The K-suite software and the all related services and infrastructures will continue to be updated and totally functional. After your subscription will be expired, it will no longer be possible to download new protocols.