Wabco 4331500140 Electric Power Steering Control Unit

Description

The Wabco 4331500140 is an Electric Power Steering Control Unit. This unit is an essential component within the drivetrain, specifically used in Mercedes Benz vehicles to provide advanced steering assistance. It enhances vehicle control and responsiveness by modulating steering effort based on vehicle speed and driver input. The unit measures 160 x 160 x 120 mm and features a 18-Pole electrical connection and mounting via 2x M8 bolts, and is designed to meet OE specifications for reliable performance within a -40°C to +75°C temperature range.

Key Features & Benefits

This thing is basically the brain behind your power steering system. It takes information from sensors – like how fast you’re going and how much you’re turning the wheel – and then tells the electric motor how much assistance to give you when you steer. It manages the voltage, current, and everything needed to make that motor work smoothly. It also handles things like variable assist – so the steering feels easier at low speeds for parking, and firmer at highway speeds. It’s a core part of your steering system. Without it, your power steering just won’t function – you’d be trying to turn the wheel with a whole lot more effort. It’s tied into a lot of other systems too, like your vehicle stability control, sometimes even your infotainment system, because it’s all electronic now. It essentially translates your steering inputs into action.

Symptoms, Risks & Replacements

It’s important because it keeps you safe and makes driving comfortable. If this unit fails, you’ll likely notice if the steering feels really heavy, or jerky, or even stops assisting you altogether. It acts like a shield between you and a lot of road feel, making the ride smoother and requiring less effort. It's also a safety item, as losing power steering while driving can obviously be dangerous. You can find replacements for this at places like Fixparts Online, but it’s something you really want to get sorted quickly if you suspect a problem. A failing unit can even throw error codes that light up your dashboard.

Warranty Information

Wabco Electric Power Steering Control Unit (MPN 4331500140) comes with a 1-year warranty.