Description
Negative Battery Cable For E-HDi Engines With Start-Stop For Citroën And Peugeot Vehicles
Heavy-duty negative battery cable designed for 1.6 e-HDi Start-Stop systems in Citroën and Peugeot cars. This cable ensures reliable grounding between the battery negative pole and vehicle chassis/engine block, maintaining stable return current for starting, charging and Start-Stop cycling. Ideal for professional workshops and experienced DIYers who need a direct replacement part referenced by product codes 9676811480 and 5638NK.
Technical Information
- Manufacturer: Stellantis
- Model: Citroën C4; Citroën C4 Picasso; Peugeot 308
- Product Codes: 9676811480
- Additional Numbers: 5638NK
Compatibility
Fits Citroën and Peugeot vehicles equipped with 1.6 e-HDi engines featuring Start-Stop function. Common applications include Citroën C4, Citroën C4 Picasso and Peugeot 308 series. Use the product codes above to verify exact fitment for your model and production year.
Function
The negative battery cable provides the essential ground path for the vehicle electrical system. It completes the circuit for starter motor, alternator and all chassis-grounded components. Reliable low-resistance contact is critical for proper starting, charging regulation and the frequent engine stop-start cycles in Start-Stop equipped vehicles.
Replacement Procedure
- Safety First: Disconnect the battery following manufacturer procedures — start with negative terminal where applicable, isolate the vehicle from accidental shorts.
- Locate Cable Routing: Note the original routing, clamps and earth point(s) on the engine block or chassis before removal.
- Remove Terminals: Loosen and remove terminal clamps and any bracket fasteners securing the cable.
- Inspect Contact Points: Clean mating surfaces at the battery terminal and chassis/engine earth point to bare metal; remove corrosion.
- Fit New Cable: Place the new cable following original routing, secure all clamps and brackets to prevent chafing, and tighten connections to the manufacturer’s specification.
- Final Check: Ensure good mechanical fixation, no contact with hot or moving parts, and that insulation is intact. Reconnect battery and verify charging and Start-Stop operation.
Installation Recommendations
- Use correct tools and avoid over-tightening terminal clamps; follow torque values from the vehicle service manual.
- Clean and de-oxidize contact surfaces; apply approved anti-corrosion compound on terminals if recommended by the vehicle manufacturer.
- Replace any damaged clamps, brackets or grommets to prevent vibration wear and insulation chafing.
- After installation, check charging voltage and starter function to confirm low-resistance ground path.
- For Start-Stop vehicles, ensure all grounding points and related connectors are in optimal condition to avoid intermittent faults.
Most Common Failure Causes
- Corrosion At Terminals: Battery acid and moisture lead to increased resistance and poor contact.
- Mechanical Damage: Chafing, cuts or crushed insulation from poor routing or worn clips.
- Vibration And Fatigue: Repeated stress, especially on Start-Stop vehicles, can break conductor strands.
- Loose Connections: Under-torqued clamps cause heating and progressive deterioration.
- Electrical Overload: High-resistance joints produce heat under heavy cranking currents, accelerating failure.
Using the correct replacement part number (9676811480 / 5638NK) and following proper installation steps ensures reliable grounding and prolongs the life of the vehicle electrical system, particularly on Start-Stop equipped 1.6 e-HDi engines.
