Description
Interior rear-view mirror for Citroën C4 and Peugeot 307. Automatic dimming.
Description
This interior auto-dimming rear-view mirror is designed as a direct replacement for selected Citroën C4 and Peugeot 307 models. It reduces glare from following vehicles at night by automatically darkening the reflective surface, improving driving comfort and safety. The unit is suitable for professional workshops and experienced DIY mechanics who look for a reliable OE-equivalent part. It is commonly searched and ordered using the product codes 8149EZ, 8154JX and 8149XG, so entering these numbers in search increases the chance of a quick match.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model(s): Citroën C4 (first generation) and Peugeot 307 (first generation)
- Product Codes: 8149EZ, 8154JX, 8149XG
- Additional Numbers: 8149EZ / 8154JX / 8149XG (common cross-references)
Installation Recommendations
Before starting work, disconnect the vehicle battery to avoid short circuits when unplugging electrical connectors. Typical replacement steps:
- Carefully remove any plastic trim around the mirror.
- Release the mirror from the windshield mount or unscrew the retaining clamp, depending on the original fitting.
- Unplug the electrical connector for the auto-dimming sensor and any integrated functions.
- Fit the new mirror onto the existing bracket and reconnect the electrical connector securely.
- Test the auto-dimming function and adjust mirror position before reassembling trim.
For mirrors that are bonded directly to the windscreen, specialized tools and adhesive are required; consider professional installation to ensure correct bonding and sensor alignment. Protect the windshield and mirror glass during the swap to avoid scratches or damage.
Why It Fails Most Often
Auto-dimming mirrors generally provide long service life, but common failure causes include:
- Moisture ingress or condensation affecting internal electronics or sensors.
- Electrical faults such as connector corrosion, broken wires, or blown fuses.
- Mechanical damage from impact or improper removal/installation.
- Age-related degradation of the dimming cell or adhesive mounting components.
Failures tend to appear more frequently on higher-mileage vehicles or cars exposed to harsh climates and temperature cycles. Replacing a faulty mirror restores night-time comfort and reduces glare-related fatigue for the driver.
