Description
Start-Stop System Inverter Unit for Citroën and Peugeot Vehicles.
Product Overview
This Continental ECU controls the Start-Stop system on a range of Citroën and Peugeot models, designed for professional workshops and experienced DIY mechanics. Ideal when the vehicle no longer reliably stops and restarts the engine to save fuel, or when diagnostic trouble codes point to the Start-Stop control module. This part is frequently searched by part numbers, so check the product codes below when matching replacement units.
Technical Information
- Manufacturer: Continental
- Model: Citroën C4; Citroën C4 Picasso; Peugeot 308
- Product Codes: 9675015880-03; 9676308180-00; 5600VR
- Other Numbers: 9675015880; 9676308180; 9805721280
Function and Typical Symptoms
The unit manages Start-Stop operations by coordinating signals and power between the vehicle control systems, battery management and starter circuitry to enable automatic engine shutdown and restart. Common symptoms of a faulty unit include Start-Stop function unavailable, warning lights related to the Start-Stop system, intermittent failures to restart the engine, and stored fault codes on diagnostic readers.
Replacement Procedure
Replacement should be performed by a qualified technician or an experienced DIY mechanic comfortable with vehicle electronics. Typical steps:
- Disconnect the negative battery terminal and wait a few minutes to ensure capacitors are discharged.
- Locate the unit (location varies by model; consult vehicle repair manual).
- Remove securing fasteners and carefully unplug electrical connectors, taking care not to damage pins or seals.
- Install the new unit, secure fasteners to manufacturer recommended torque, and reconnect all connectors.
- Reconnect the battery. Clear any stored fault codes and verify Start-Stop function on road test.
Installation Recommendations
- Always disconnect the battery before working on electronic control units and follow the vehicle manufacturer procedures.
- Inspect connectors and wiring for corrosion or damage and repair as needed before installing the replacement unit.
- Use correct tools and avoid pulling on wiring; ensure connector seals are intact to prevent moisture ingress.
- After installation, perform a full diagnostic scan and confirm no related fault codes remain. Reinitialize or code the unit where required by the vehicle systems using appropriate diagnostic equipment.
Most Common Failure Reasons
- Moisture ingress and connector corrosion leading to electrical faults.
- Thermal stress from repeated heat cycles that degrades internal components over time.
- Voltage spikes, poor grounding or battery/charging system problems that damage electronics.
- Mechanical damage during previous repairs or from impact.
- Age and high mileage combined with harsh operating conditions.
Notes on Compatibility
This unit is commonly fitted to Citroën C4, Citroën C4 Picasso and Peugeot 308 models and is often referenced by the part numbers listed above. Always match the exact product code on your existing unit when selecting a replacement to ensure correct fitment.
