Variant 1
ECU- Catalog engine
- 13500 473HP
- Engine code
- 6135HH003
- Controller brand
- PHOENIX
- ECU
- L21
- Stock power
- 473 HP
- ECU SW
- SW61893G
- ECU HW
- RE552148
JOHN DEERE · L21 ECU
JOHN DEERE S680 L21 tuning files
Here is what the catalog holds for the JOHN DEERE S680 on the L21. Stock output across the matched variants spans 473–473 HP. We start conservative here — Stage 1 and Stage 2 are the dependable baseline. Your file is built against the exact ECU software on the car, then operator-verified.
Available solutions
Applicable work for the L21 on this vehicle. The available set firms up once the exact engine and software are known.
Engine variants & ECU software
5 distinct variants for the JOHN DEERE S680 on the L21 ECU. Reference the engine and controller software when you upload.
Variant 2
ECU- Catalog engine
- 13500 473HP
- Controller brand
- PHOENIX
- ECU
- L21
- Stock power
- 473 HP
Variant 3
ECU- Catalog engine
- 13500 473HP
- Engine code
- 6135HH003
- Controller brand
- PHOENIX
- ECU
- L21
- Stock power
- 473 HP
- ECU SW
- SW61892D
- ECU HW
- RE552148
Variant 4
ECU- Catalog engine
- 13500 473HP
- Engine code
- 6135HH003
- Controller brand
- PHOENIX
- ECU
- L21
- Stock power
- 473 HP
- ECU SW
- SW61892H
- ECU HW
- RE553085
Variant 5
ECU- Catalog engine
- 13500 473HP
- Engine code
- 6135HH003
- Controller brand
- PHOENIX
- ECU
- L21
- Stock power
- 473 HP
- ECU SW
- SW61892E
- ECU HW
- RE553085
Related vehicles
Other vehicles built on the L21 controller or the same engine — handy when a platform spans several models and makes.
Questions, answered.
Which tuning solutions are available for the JOHN DEERE S680 on the L21?
Stage 1, Stage 2. The exact set depends on the specific engine and software version.
Do you cover the L21 ECU software on this model?
Yes — the JOHN DEERE S680 on the L21 ECU is part of the catalog. Upload your original file and it is matched to the right calibration before any work is done.
How is the file delivered?
Through the TuningBay workflow with operator validation and one safe, sensible result per job. Files we deliver, we stand behind.