Description
Start-Stop System Converter Unit For Citroën And Peugeot Vehicles
This Continental Start-Stop converter unit is designed for Citroën and Peugeot vehicles equipped with a start‑stop system. It manages the electrical conversion and control required to safely stop and restart the engine during short halts, improving fuel economy and reducing emissions. The unit is referenced under part numbers 9802096780, 9802096780-04 and 9679123280 and is commonly fitted in vehicle groups that use Continental start‑stop power electronics.
Why Choose This Unit
For professional workshops and experienced DIY enthusiasts, this converter unit offers a direct replacement option that restores proper Start‑Stop functionality. Installing the correct part number ensures compatibility with the vehicle’s charging and battery management systems and helps avoid warning lights, failed start‑stop cycles and related drivability issues.
Technical Information
- Manufacturer: Continental
- Model: Various Citroën And Peugeot Models With Start-Stop System
- Product Codes: 9802096780, 9802096780-04, 9679123280
- Other Numbers: 9679123280 | 9802096780 | 9802096780-04
Function And Typical Faults
The converter unit conditions and controls the electrical flow between the battery, starter/generator and vehicle electronics during engine stop and restart events. Typical failure modes include internal electronic component degradation caused by heat, vibration, moisture ingress, transient voltage spikes or poor battery condition. Symptoms of a failing unit are intermittent or permanent loss of Start‑Stop function, dashboard warning lights related to charging or battery systems, and unexpected engine restarts or failures to restart after idle stops.
Replacement Frequency And When To Replace
There is no fixed interval for replacement; service life depends on vehicle use, operating environment and battery health. Replace the unit when Start‑Stop operation is unreliable, when related warning messages appear, or following diagnostic confirmation of internal unit faults. In vehicles with repeated battery issues, addressing the battery first can prevent premature failure of the converter unit.
Installation Recommendations
- Disconnect the negative battery terminal before beginning work and observe standard electrostatic discharge (ESD) precautions.
- Locate the unit (commonly near the battery or in the engine bay) and remove any protective covers to access electrical connectors and mounting bolts.
- Document connector positions and unplug all harnesses, then unbolt the unit and remove it carefully to avoid damage to adjacent components.
- Fit the replacement unit, secure mounting bolts to the manufacturer’s torque specifications, reconnect all connectors and refit covers.
- After installation, reconnect the battery and perform a system check. Depending on the vehicle, initialization or adaptation may be required using the appropriate diagnostic tool to ensure full Start‑Stop functionality.
- For vehicles with advanced charging management, have a qualified technician verify battery state, charging system operation and perform any necessary calibrations.
Reason Why The Part Most Often Fails
Failures most commonly result from long‑term exposure to heat and vibration, moisture penetration into connectors or housing, electrical surges or sustained operation with a weak or failing battery. Addressing root causes such as poor battery condition or corroded connections will help prevent repeat failures.
Notes For Professionals And Enthusiasts
This component is an electronic control device; careful handling and correct installation are essential. If in doubt about diagnostic or initialization procedures, use professional diagnostic equipment and follow the vehicle manufacturer’s service guidelines to restore proper system operation.
