This document is the Valeo IBSG4W059 presents the detailed technical description and application area of a type of 48V starter-alternator (Integrated Starter Generator – ISG) unit. This high-voltage component is crucial for the operation of modern hybrid and mild-hybrid (MHEV) systems, especially in the efficient management of start-stop functions and energy recovery (regenerative braking).
Stremtec, as an expert in starting, charging, and cooling systems, exclusively offers high-quality, new Valeo parts that guarantee the reliability of the vehicle's electrical system.
This specific alternator was Citroën AMI Electric developed for models starting from 2020. The application of 48V technology enables more efficient fuel economy and reduced harmful emissions by supporting the vehicle's electrical systems and assistance functions.
Main Application Area:
Vehicle: Citroën AMI Electric
Production Year: 2020 to present
The IBSG4W059 unit has several original and aftermarket part numbers, ensuring compatibility and easy identification during servicing.
| Manufacturer | Part number | Note |
|---|---|---|
| VALEO | IBSG4W059 | Original Part Number (Main Identifier) |
| VALEO | UD102351 | Original Reference |
| VALEO | 615006 | Original Reference |
| VALEO | 740480 | Original Reference |
| VALEO | ALTJ596 | Original Reference |
| VALEO | ALTJ596V | Original Reference |
| AS-PL | 415006 | Aftermarket Code |
| CASCO | CAS15H06GS | Aftermarket Code |
| CITROEN | 9838348280 | Original OE Code |
| CITROEN | 21015H06O | Original OE Code |
| AB AUTOMOTIVE | ALV3949 | Aftermarket Code |
| KRAUF | 556397RIV | Aftermarket Code |
| KUHNER | 89216884 | Aftermarket Code |
| POWERMAX | 227.402.250.500 | Aftermarket Code |
| PSH | 2027960HOE | Aftermarket Code |
| REAL | 3015H06.1 | Aftermarket Code |
| SANDO | OVIT | Aftermarket Code |
This component can be classified into the following main categories:
Category: Alternators
Subcategory: Starters / Alternators
Brand: the wiper blade is removed and connected to the wiper blade holder. Various adapters are used to make a precise connection between the wiper blade mount and the angle measuring device. Adapters are available for all wiper arm types. (Bosch
The Valeo IBSG4W059 is an advanced technology unit that combines the functions of traditional alternators and starter motors into a compact, high-efficiency unit. 48V systems (often Mild Hybrid Electric Vehicle - MHEV - systems) play a prominent role in vehicle electrification.
Advanced Start-Stop Functionality: The ISG enables extremely fast and quiet restarts when the vehicle stops (e.g., at a traffic light), minimizing idling fuel consumption.
Regenerative Braking (Energy Recovery): During braking or deceleration, the unit acts as a generator, recharging the 48V battery. This increases system efficiency and reduces the load on the internal combustion engine.
Boost Function (Torque Assist): It is capable of providing supplementary torque to the crankshaft for short periods, especially during acceleration or uphill driving, thereby improving driving dynamics and reducing engine load.
High-Voltage System: The 48V architecture allows for the delivery of higher electrical power while avoiding the complexity and costs associated with full hybrid systems (e.g., 400V).
Stremtec is committed to providing comprehensive support for automotive electrical systems. In addition to the IBSG4W059, our offerings include:
EV/PHEV Components: Components related to electric vehicles and plug-in hybrids, including battery repair information and special repair kits.
Alternators and Starter Motors: A wide selection from the latest start-stop alternators to conventional units, including information related to the LIN protocol.
Workshop equipment: Professional diagnostic tools (Autodiagger), EV/PHEV diagnostic equipment, air conditioning testers, and industrial washing and cleaning equipment (Magido, Marwis).
Training: Professional training in the area of starter motors/alternators, Motoplat systems, as well as specialized training for repairing Audi integrated starter-generators.
This Valeo 48V Integrated Starter-Generator (IBSG4W059) is the ideal choice for the professional and reliable repair of Citroën AMI Electric models, ensuring optimal operation of the vehicle's electrical system.