Realistic 4×4 Traction System

Take full control of your vehicle's traction! This script adds a fully switchable 4×4 traction system to compatible vehicles (tractors, trucks, harvesters, cars). Engage or disengage the front axle on demand and toggle a differential lock that trades turning radius for raw grip in mud, snow, or during heavy pulls.

Features:

• Real rear-wheel slip detection — the automatic modes react to actual wheel slip physics, not just speed.
• Four drive modes, assigned per vehicle out of the box:
• Manual — you're always in control.
• Semi-Auto — engages on real slip, manual override always available.
• Auto — same logic, tuned for vehicles with factory-automatic 4WD (CVT/IVT drivetrains).
• Smart — Fendt-style continuous, proportional engagement (no hard on/off).
• Native tire pressure simulation on engagement — no dependency on any other mod.
• On-screen HUD with live status, adjustable position from the in-game settings menu.
• Zero XML edits required — the system injects itself into every compatible vehicle automatically.

Version 1.0.1.0:

• Keybinds changed to Shift+Ctrl+J/K/N to avoid conflicts with other mods.
• Auto/Semi-Auto response is much faster (confirm delay cut from 2.5 s to 0.9 s).
• The 2WD/4WD switch in Manual/Semi-Auto/Auto is now a short smooth ramp instead of an instant on/off — no jolt or momentary speed loss when the front axle engages under load.
• Optional soft compatibility with Hyper Realistic Maintenance 2, if you also run it — fully standalone otherwise.