Description
Rear Wiper Motor For CITROËN C5 I And II Estate
High-quality Valeo rear window wiper motor compatible with Citroën C5 I and C5 II estate models. Supplied under multiple reference numbers commonly used in parts catalogues, this electric motor drives the rear wiper arm and mechanism to ensure clear rear visibility in wet conditions. Ideal for mechanics and DIY enthusiasts who search by part number (9638335780, 54904512, 6405K1).
Key Features
Reliable electric motor with integrated reduction gearing designed for the rear tailgate wiper linkage. Robust design to withstand regular use and the environmental exposure typical for tailgate-mounted components. Direct-fit replacement for OE-mounted units on compatible Citroën C5 estate models, matching original mounting points and electrical connector.
Technical Information
- Manufacturer: Valeo
- Model: Citroën C5 I Estate, Citroën C5 II Estate
- Product Codes: 9638335780, 6405K1, 54904512, 03
- Other Numbers: NFP (as listed in supplier data)
Function
The unit provides the rotational drive for the rear wiper arm via an electric motor and gearbox. It converts electrical energy (12 V system) into controlled mechanical movement transmitted through the wiper linkage to clear the rear window.
Common Symptoms Of Failure
- Rear wiper does not move at all despite ignition on.
- Intermittent operation or loss of torque—wiper moves slowly or stalls under load.
- Unusual grinding or clicking noises from the tailgate area.
- Wiper stops in wrong position or does not park correctly.
Why The Part Usually Fails
Failures are most often caused by water ingress and corrosion of the gearbox or motor brushes, wear of internal gears, or mechanical overload when the wiper arm is frozen to the glass. Electrical issues such as worn brushes, poor connector contacts, or short circuits can also lead to malfunction. Exposure to road salt and repeated cycling accelerates wear.
Replacement Guide
Basic steps for replacement (for experienced mechanics or competent DIYers):
- Disconnect the vehicle battery before starting work to prevent short circuits.
- Remove the rear wiper arm: lift the cap, undo the retaining nut, and slide the arm off the splined shaft.
- Remove interior tailgate trim to access the motor and wiring harness (careful with plastic clips and trim fasteners).
- Unplug the electrical connector from the motor and remove the motor mounting bolts.
- Fit the replacement motor, secure mounting bolts to manufacturer recommendations, reconnect the electrical plug and reassemble trim.
- Refit the wiper arm, set correct park position, tighten the retaining nut and test operation through its full sweep at different ignition positions.
Installation Recommendations
- Always disconnect the battery before removal and follow the vehicle manufacturer’s instructions to avoid damage to electrical systems.
- Inspect the wiper arm, linkage and mounting splines for wear or play; replace worn components to prevent early failure of the new motor.
- Apply a light anti-seize to the spline if assembly conditions require, and ensure the wiper arm is correctly indexed during reassembly.
- After installation, verify smooth operation and correct park position; check for abnormal noises or binding across the full sweep.
Suitability And Notes
This motor is intended as a direct replacement for rear wiper applications on Citroën C5 I and II estate variants carrying the listed part numbers. Always match the part number listed on the old unit with the codes above to ensure correct fitment. Searching by OE number such as 9638335780 or 54904512 will typically locate this exact item in parts databases.
Why Choose This Part
Designed to the fit, form and function expected for OE-style replacements, this Valeo rear wiper motor offers a straightforward solution to restore rear visibility and eliminate symptoms such as non-operation, poor torque, or noisy movement. Clear part-number referencing makes ordering and inventory control easier for workshops and independent mechanics.
