This mod adds a fully switchable 4×4 traction system to compatible vehicles, including tractors, trucks, harvesters and cars. It can engage or disengage the front axle and toggle a differential lock that trades turning radius for maximum grip in mud, snow or during heavy work.
Features
- Real rear-wheel slip detection, with automatic modes reacting to actual wheel-slip physics, not just speed.
- Four driving modes, assigned to each vehicle by default:
- Manual, always in control.
- Semi-automatic, engages with actual wheel slip, while manual control is always available.
- Automatic, using the same logic adjusted for vehicles with factory-fitted automatic 4WD, including CVT/IVT transmissions.
- Intelligent, with continuous, proportional engagement in the Fendt style, without abrupt switching on/off.
- Native tyre-pressure simulation during engagement, with no dependency on any other mod.
- On-screen HUD with real-time status and adjustable position in the game Settings menu.
- Zero XML changes to any vehicle, with the system integrating automatically into all compatible vehicles.
Changelog
- V1.5.0.0
NEW / FIXED
Differentials now really work, rebuilt on the drivetrain node exactly like the game creates them. In FS25, the locks previously had no effect.
Separate FRONT / CENTER / REAR diff locks, Ctrl+Alt+K / Ctrl+Alt+J / Ctrl+Alt+L, plus quick cycle, Ctrl+K. All are rebindable.
Locked center respects the real front-axle lead, tyre size ratio + 2.5%, with no more rear wheels spinning while the front axle brakes the tractor.
2WD leaves the front axle free.
CTIS tyre pressure per axle from the real axle load and tyre load tables, with Soil Draft Physics. Realistic -3.5% rolling radius instead of -15%, with no more “flat” tyres.
CTIS automatically disabled on tracked tractors.
New translations: DE, FR, ES, IT, PL, RU, plus EN, PT, BR, with google, errors are expected!!!
TESTED TOGETHER, no conflicts:NOT RECOMMENDED TOGETHER, as they also change wheels/differentials:EnhancedVehicle: turn off its differential/drive-mode functions if you use both.- Precision Farming 1.5.1.0
- Soil Draft Physics (beta), optional; when installed, CTIS tyre pressure is calculated from the real axle load
- Realistic Mechanical Systems (RMS) 0.10.0.0
- Realistic Weather 1.2.0.0
- Fendt 1000 Vario Series
- John Deere 8R Pack / 6R Large / Ripper 2100
- Case IH Magnum CVX
- Kubota M7
- JCB Fastrac 4000
- CLAAS Lexion 8000
- Real Three Point Attacher
- Remove Frontloader Axle Locking
- Vehicle Speed Sync
- DashboardLive
- Real Vehicle Cams
- Universal Autoload
- Maps: Riverbend Springs, Redstone County
- Mud System Physics
- REA Plus
- Tractor Terrain Dynamics
- Variable Tire Pressure
- V1.4.0.0
NewFixed- Physical traction prediction for tractors with GPS: compares the required force, including slope, rolling resistance and effort from LOWERED implements, with rear axle grip according to the soil type and ground moisture.
- Front axle engagement by clutch on a ramp, approximately 0.4 s, without jolts.
- Differential lock in 3 positions, Ctrl+K: open / rear / rear + front, with progressive engagement.
- Auto/smart engages with the implement lowered in the field, when wheels are slipping, downhill with a load and at low speed under load. It disengages during tight headland turns and at road speed, and remains engaged for at least 6 s, with no “flashing on and off”.
- Automatic locks while working. They release when turning, braking or above 15 km/h, in all modes, for safety.
- Maximum speed with 4×4 engaged: 25 km/h for tractors/harvesters, 40 km/h for trucks/cars.
- No mode engages 4×4 above 20 km/h, not even with Ctrl+J.
- Tyre pressure, Fendt, follows field/road conditions, like the real VarioGrip.
- New HUD: live wheel slip, padlocks on locked axles and the REASON for each decision.
- The terrain prediction remained high, e.g. 27%, simply because a heavy implement was attached, even when lifted.
- Braking activated 4×4 and the locks. Wheel slip while braking no longer counted as a lack of traction.
- Multiplayer: Ctrl+J in automatic modes was undone by the dedicated server.
- Semi-automatic mode never disengages on its own. Only the player can do so.
- V1.3.0.0
Multiplayer in development, playable but may contain bugs.
Compatibility tested with the MudSystemPhysics and Tractor Terrain Dynamics mods.
Behaviour fixes:New features:Features from previous versions, already included in this version:- Continuous-track tractors, only 2 tracks, e.g. John Deere 8RT, Fendt Vario MT, are no longer affected by the 2WD/4WD system. It makes no mechanical sense for them.
- Fixed the actual difference between “semiauto” and “auto” modes: semiauto now only engages automatically and never disengages automatically. This is always left to the player.
- Terrain anticipation GPS now always reads, even above road speed. Previously it always stayed at 0% in this situation.
- Fixed implement mass reading. It was reading tonnes as if they were kg, underestimating the actual weight by 1000x.
- Fixed false triggering of “smart” mode when braking and shifting into reverse.
- Fixed being “stuck to the ground” when lowering a heavy implement. The differential lock reacted too quickly to the initial spike.
- Automatic system, semiauto/auto, now reacts much faster to real and sustained wheel slip. Previously it could take dozens of seconds.
- Fixed rapidly switching between 2WD/4WD when stopped in the field.
- Fixed false triggering of semiauto when starting from a standstill, a normal and brief wheel-slip spike at the moment of take-off.
- The “smart” mode, Fendt, has been isolated from the binary engagement logic, preventing interference between the smart mode’s own hysteresis and the new detections.
- Detection of “fieldwork in progress” via the game’s native GPS and automatic “arming”: when stationary/almost stationary in a field with the implement lowered for more than 2 seconds, 4WD engages directly.
- Experimental support for engine load as an additional signal, disabled by default and available in
DriveModeConfig.lua.
- Proprietary GPS/terrain-elevation anticipation system, without depending on another mod, only on each brand’s top-of-the-range tractors: Fendt VarioGuide, John Deere JDLink, Case AFS Connect, New Holland IntelliSteer, Deutz-Fahr Agrosky, CLAAS EASY.
- Proper 4WD terminal, Ctrl+Shift+G, with Status/Telemetry/Settings tabs, wheel-slip thresholds and anticipation strength adjustable live, per vehicle.
- Per-tractor telemetry, including total hours, hours in 4WD, hours with differential locked, number of engagements, distance in 4WD and GPS anticipations, saved in the savegame with a reset button.
- Savegame persistence of the 4WD state, engaged/differential locked, and adjusted Settings.
- Renewed HUD, capsule-style bars with glow and pulsing halo on active elements, without text overlap.
- Fix for the tyre-pressure conflict with FS25_MudSystemPhysics.
- Extended support for brands/models: John Deere 6R/8R/9RX, New Holland T8/T8000, Deutz-Fahr Series 7/8, CLAAS Xerion, McCormick X8 VT-Drive.
