4008503070 | Genuine Wabco ABS / PABS ECU Module

Part Number: 4008503070 Condition: New Manufacture/Brand: Wabco Description: An ABS / PABS ECU is the electronic control unit (ECU) that manages the Anti-lock Braking System (ABS) — or in some cases, a Partially Automated Braking System (PABS) — in vehicles, especially trucks, trailers, and buses. ABS / PABS ECU Module E4F 4S4M, 12V Fits For heavy commercial / medium duty trucks, including Freightliner, Volvo, Mack and other OEMs that use WABCO ABS systems. Specifications: Calculated Volume (dm³): 4.893 Distance between holes: 6.81x5.28 in Mounting: 3x Ø 6.8 mm System: 4S/4M Technical specification: OE specification Temperature range: -40°C to +75°C Type: PABS ECU E4F Voltage: 12 V Purpose: Function Description Wheel speed monitoring Detects if a wheel is decelerating too quickly (locking up) Brake modulation Controls valves to adjust brake pressure to prevent lockup Diagnostics Stores fault codes (e.g., faulty sensors, wiring, solenoids) Safety override Prevents unsafe braking behavior on slippery or uneven surfaces Signs of a Faulty ABS / PABS ECU Module ABS warning light stays on Brakes feel locked or unstable during panic stops No ABS function on slippery surfaces Stored fault codes for sensors or modulators Loss of communication with the ECU via diagnostic tools About the Manufacturer – Wabco: WABCO (originally the Westinghouse Air Brake Company) is a global leader in vehicle control systems for commercial vehicles such as trucks, buses, and trailers. Founded in 1869 and later becoming a part of ZF Friedrichshafen AG in 2020, WABCO is best known for pioneering advanced braking, stability, and suspension technologies.