Description
Interior rear-view mirror for Citroën C4 and Peugeot 307. Automatic dimming.
This auto-dimming interior mirror is a direct-fit replacement commonly used on Citroën C4 and Peugeot 307 models. Designed for professional garages and DIY mechanics, it reduces glare from following vehicles at night by automatically adjusting the mirror glass tint, improving driving comfort and safety. The part is frequently searched by its reference numbers, so check the product codes listed below when locating the correct unit.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Citroën C4; Peugeot 307
- Product Codes: 8149EZ, 8154JX, 8149XG
- Additional Numbers: 8149EZ, 8154JX, 8149XG
Compatibility
- Citroën C4 (selected years and equipment levels)
- Peugeot 307 (selected years and equipment levels)
Installation Recommendations
- Disconnect the vehicle battery before removing the old mirror to prevent short circuits when unplugging the electrical connector.
- Remove interior trim as required to access the mirror mounting point and wiring harness. On most models the mirror is fixed to a windshield bracket with a single screw or a clamp; slide the mirror off the mount after loosening fasteners.
- Connect the electrical plug of the new mirror, seat it onto the windshield bracket and tighten the fixing to the correct torque. Refit trim panels and restore battery connection.
- After installation, verify automatic dimming operation by simulating glare (cover the ambient/light sensor briefly) and check any integrated features such as compass or auto-folding if present.
- Use manufacturer-recommended adhesives or brackets when replacing a mirror glued to the glass; allow adhesive curing time before driving.
Why This Part Fails Most Often
Automatic rear-view mirrors usually fail due to electrical or sensor issues. Common causes include internal electronic component degradation from age or heat, water ingress after windshield seal damage, connector corrosion, or damage caused by impacts (e.g., accidents or improper removal). Adhesive or mounting bracket failure can also cause loose or detached mirrors. Addressing wiring corrosion and ensuring proper mounting during installation will reduce the chance of premature failure.
Practical Notes For Buyers
- Search by part numbers (8149EZ / 8154JX / 8149XG) to speed up finding the correct unit.
- Confirm that the replacement mirror matches any integrated functions your vehicle requires (auto-dimming sensor location, electric features, connectors).
- Professional installation is recommended if the mirror is bonded to the windshield or if airbag/trim disassembly is needed.
