Description
Interior rear-view mirror for PEUGEOT 308, PEUGEOT 508, CITROËN C4 II B7, DS4, C3 Picasso. Color FXT – Black Cornelie. Electric dimming. Without switch.
Overview
This interior auto-dimming rear-view mirror is a direct-fit replacement designed for a range of Peugeot and Citroën models. It restores the anti-glare function that improves night driving comfort by automatically reducing glare from headlights behind the vehicle. The part is frequently searched by its product numbers 96758889XT and 8154SA, making it easy to find for professional technicians and DIY enthusiasts.
Key Features
- Auto-dimming (electrochromatic) glass to reduce glare from trailing vehicles.
- Finish: FXT – Black Cornelie, matching factory interiors for listed models.
- Designed as a direct replacement for original equipment mirrors on compatible models.
- No built-in manual switch (Without switch) — operates automatically based on internal sensors.
Compatibility
Fits vehicles including, but not limited to: Peugeot 308, Peugeot 508, Citroën C4 II (B7), DS4 and Citroën C3 Picasso. Always verify fitment by comparing the mounting style and connector type on the vehicle with the replacement mirror.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Peugeot 308, Peugeot 508, Citroën C4 II B7, DS4, C3 Picasso
- Product Codes: 96758889XT, 8154SA
- Other Numbers: Color Code FXT, Finish Black Cornelie
- Function: Electric (Auto) Dimming, No Manual Switch
Replacement Procedure
Replacement is straightforward for experienced technicians and equipped DIYers. Typical steps:
- Disconnect the negative battery terminal before starting to avoid short circuits and to protect vehicle electronics.
- Remove any trim or plastic covers around the mirror base using gentle trim tools to avoid damaging headliner material.
- Support the mirror while releasing the mounting fastener(s) — many models use a clamp or a small Torx/hex bolt. Carefully slide the mirror off the windshield mount if applicable.
- Unplug the electrical connector for the dimming function and, if present, the ambient light sensor connection.
- Install the new mirror by reversing the procedure: connect the wiring, fit the mirror to the mount, tighten fasteners to manufacturer torque where specified, and refit trim.
- Reconnect the battery and verify the auto-dimming function in both daylight and low-light conditions. Check for secure mounting and absence of rattles.
Installation Recommendations
- Use appropriate trim tools to avoid damaging the headliner or mirror bezel.
- If fasteners are plastic or fragile due to age, replace them with OEM-equivalent clips to ensure safe fitment.
- After fitting, test the mirror operation with the engine running and simulate night conditions (cover ambient light sensor) to confirm proper dimming response.
- If any electrical faults appear (no dimming), inspect fuse, wiring harness, and connector contacts for corrosion or damage.
Why The Part Fails Most Often
Auto-dimming mirrors commonly stop working due to one or more of the following reasons:
- Electrical Issues: Blown fuse, damaged wiring, or corroded connector pins interrupt power to the mirror module.
- Sensor Failure: The light sensor used to detect glare can fail or become contaminated, preventing proper dimming.
- Moisture Ingress: Water or humidity can penetrate internal components, causing malfunction or glass delamination.
- Impact Damage: Physical knocks from cargo, sun visors, or accidents can break the glass or damage the mounting mechanism.
- Age-Related Degradation: Electrochromatic cells and internal electronics can degrade over many years, resulting in slower response or no dimming.
Who Should Install
Suitable for auto mechanics, body shop technicians and competent DIYers with basic electrical and trim removal skills. If you are unfamiliar with vehicle electrical systems or mounting procedures, consider having the mirror fitted by a professional to avoid damage to the windshield, headliner or vehicle electronics.
Notes
This mirror is a direct replacement option for the listed Peugeot and Citroën models. It restores the comfort function of the original auto-dimming mirror but does not include a manual on/off switch. Check the physical connector and mounting type on the vehicle to ensure fitment prior to installation.
