Kess V3 Slave

Alientech KESS3 Slave tool. This is the “starter-friendly” version of the KESS3 system, ideal if you don’t want to edit maps yourself but still want to offer professional ECU/TCU remapping.

🔧 What is KESS3 Slave?

• The Slave version of the Alientech KESS3 ECU & TCU programmer.

• Same hardware as the Master tool, works via OBD, Bench, or Boot.

• Reads and writes ECU/TCU files, but they are encrypted.

• Files must be sent to your linked Master tuner/file service, who modifies them and returns them to you for writing.

• Designed for tuners who want to focus on reading/writing only, without doing the map editing.

🛠 KESS3 Slave vs KESS3 Master

• Slave Tool

  • Reads encrypted files only.

  • Requires a linked Master/file provider.

  • Lower startup cost.

  • Ideal for beginners or mobile tuners.

• Master Tool

  • Reads open/unlocked files.

  • Lets you edit maps yourself (WinOLS, Swiftec, ECM Titanium).

  • Can use any file service.

  • More expensive, but gives total freedom.

⚡ Why Choose KESS3 Slave?

• Cheaper startup than Master.

• Same vehicle coverage (cars, vans, bikes, trucks, marine, agri).

• Easy workflow: read, send file, receive modified file, write back.

• Fast turnaround (depending on your Master/file service, often 15–60 minutes).

• Perfect for mobile remapping businesses who don’t want to edit files themselves.

• Can be upgraded to Master later if your business grows.

✅ Typical Workflow with KESS3 Slave

1. Connect to vehicle (OBD/Bench/Boot).

2. Read encrypted ECU/TCU file.

3. Send file to your Master tuner/file service.

4. Receive tuned file (still encrypted).

5. Write back to ECU/TCU.

6. Test drive & deliver to customer.