Window and rearview mirror control for Citroën C4 cars. It is used to control the front electric windows and electric mirror adjustment, in selected versions also to control the electrically folding mirrors of the car. This is a used genuine PSA part, fully functional, may show normal cosmetic signs of use.

This driver is often searched for by product numbers, so we’ve listed them below for easy tracking and correct pairing with your car.

Technical information:
Manufacturer: PSA (Citroën / Peugeot)
Model: Citroën C4
Product codes: 9651464377, 6554HC
Other numbers: NFP

Installation recommendations:
– Disconnect the battery before assembly (due to the risk of short circuits and errors in the comfort unit).
– Carry out the disassembly carefully with a plastic crowbar, so as not to damage the door upholstery and the panel latch.
– Check the connector and wiring in the door (oxidation, loose pins) and clean the contacts if necessary.
– After connection, check the function of: front windows, mirror adjustment and possibly tilting mirrors (if equipped).

The reason why the part most often goes wrong:
The most common cause is wear of the internal contacts and microswitches during frequent use, or moisture seeping into the controller or oxidation of the contacts in the door connector.

This replacement power window and mirror control is an OEM-fit style switch commonly referenced under part numbers 9651464277 and 6554HE. Designed for mechanics and experienced DIYers, the unit provides direct replacement of the driver’s door master switch assembly to restore reliable operation of the front power windows and mirror adjustment. Frequently searched by its product codes, this switch is a practical solution when buttons stick, contacts fail, or mirror adjustment stops responding.

Technical Information

• Manufacturer: Stellantis (Citroën)
• Model: Citroën C4 (First Generation, 2004–2010)
• Product Codes: 9651464277, 6554HE
• Other Numbers: 6554.HE

Compatibility And Function

The switch controls the front left/right power windows and the electric mirror adjustment function on the driver’s door. It is intended as a direct replacement for the original master switch; wiring and connector layouts follow the OEM specification for compatible Citroën C4 first‑generation vehicles. Customers commonly find this part by searching the above product codes.

Installation Recommendations

1. Safety First: Disconnect the vehicle battery before beginning work to avoid short circuits and electrical damage.
2. Remove Door Trim: Use appropriate trim tools to carefully remove the inner door panel and access screws or clips securing the switch bezel.
3. Disconnect Wiring: Unclip the switch trim, remove mounting screws, and unplug the multi‑pin connector from the old switch.
4. Fit New Switch: Plug the connector into the replacement switch, secure it with the original fasteners and refit the door trim.
5. Function Test: Reconnect the battery and verify all window and mirror functions operate correctly before final reassembly.

Most Common Failure Reasons

Power window switches are subject to heavy daily use, which leads to wear of internal electrical contacts and plastic mechanisms. Typical failure modes include worn or pitted contacts causing intermittent operation, moisture ingress from a damaged door seal, broken mounting tabs from forced removal, and carbon build‑up on contacts. Mirror adjustment failures are often caused by the same internal contact degradation or connector corrosion.

Practical Advice For Repairers

When replacing the switch, inspect door wiring and connector pins for corrosion or damage—clean contacts if necessary and replace the connector if pins are deformed. Avoid prying on plastic clips and use proper trim tools to reduce the risk of breaking the panel. If mirror motors or window regulators are also intermittent, check them separately as the switch only controls the command side of the system.

Product Description

High-quality replacement window switch designed for the front passenger door of the Citroën C4 (first generation). This unit provides direct fitment and restores reliable control of the passenger window motor and one-touch functions when present. Ideal for mechanics and DIY enthusiasts who search by part numbers (9651465677, 6554HF) to find exact-fit components.

Features And Function

The switch controls the up/down movement of the front passenger window and integrates into the door switch cluster. It transfers driver or passenger input to the window motor via the vehicle wiring harness. Typical features include tactile rocker or push-button actuation, built-in detents for one-touch operation when supported by the vehicle, and a plug-and-play electrical connector for fast replacement in most cases.

Technical Information

• Manufacturer: Stellantis / Citroën
• Model: Citroën C4 (First Generation)
• Product Codes: 9651465677, 6554HF
• Additional Numbers: 6554HF

Installation Recommendations

Follow a methodical approach for safe and efficient replacement. Recommended steps:

• Disconnect The Battery: Always disconnect the negative terminal before working on electrical components to prevent short circuits and avoid damaging the switch or vehicle electronics.
• Remove Door Trim: Use appropriate trim tools to carefully remove the door panel and switch bezel to avoid breaking clips or plastic trim.
• Unplug Electrical Connector: Release the locking tab and disconnect the wiring harness from the switch.
• Remove Fasteners: Unscrew or unclip the switch from its mounting location and extract the unit.
• Install New Switch: Fit the replacement switch, secure fasteners, reconnect the wiring harness, and reassemble the door trim.
• Test Operation: Reconnect the battery and verify full window travel, one-touch functions (if applicable), and correct operation of all related switches before final reassembly.

Use plastic trim tools to avoid visible damage, and inspect connector pins for corrosion before installation. Applying a small amount of dielectric grease to the connector pins can improve long-term reliability in humid environments.

Why The Part Fails Most Often

• Wear And Contact Degradation: Frequent use causes the internal contacts to wear or pitting from electrical arcing, leading to intermittent or failed switching.
• Moisture Ingress: Water or humidity entering the door cavity can corrode contacts and connector terminals.
• Mechanical Damage: Broken plastic tabs, cracked housings or impact damage during door repairs are common causes.
• Wiring And Connector Issues: Loose pins, bent terminals or wiring fatigue at the connector can mimic switch failure.

Additional Notes

Searching By Part Number Improves Results: Use The Codes 9651465677 Or 6554HF When Looking For Matching Units Or Cross-References. This Unit Is Suited For Professional Workshops And Competent DIY Mechanics Comfortable With Door Trim Removal And Electrical Diagnostics.

Over time, window regulators may wear out due to regular usage, leading to malfunctioning windows or mirrors. Common issues include failure to respond when operating the controls, which can be attributed to a damaged button or internal mechanism. This replacement part is fully functional and ready to restore your vehicle’s window operation.

To replace the window regulator, follow these general steps: remove the door panel, disconnect the battery, detach the old regulator and wiring, and install the new unit in the reverse order. Regular inspection of your window regulator is recommended approximately every 50,000 miles to avoid unexpected failures.

Technical Information

• Manufacturer: PSA Citroën Peugeot
• Model: Citroën C4
• Product Codes: 9651464577
• Additional Numbers: 6554HA