Description
Rear window wiper motor for Peugeot 406 Combi.
The Rear Wiper Motor for Peugeot 406 Combi is a direct-fit replacement unit designed to restore reliable wiping action on the tailgate glass. Ideal for professional workshops and experienced DIY enthusiasts, this motor delivers the torque and stroke control required to clear water, dirt and frost from the rear window. Commonly searched by OE and aftermarket numbers (e.g. 0390201556, 390201556, 6405G3), this part increases visibility and safety on wet or icy roads.
Technical Information
- Manufacturer: Stellantis / Peugeot
- Model: Peugeot 406 Combi (Estate)
- Product Codes: 0390201556, 390201556, 6405G3
- Other Numbers: 0390201556 | 390201556 | 6405G3
Function And Features
The unit converts electrical input into a controlled oscillating motion through an integrated reduction gearbox and linkage, moving the rear wiper arm across the glass. It provides low-speed, high-torque output required to overcome wind resistance and light icing, while the internal limit switches or mechanical park mechanism ensure the wiper stops in the correct resting position.
Compatibility And Application
Specifically intended for Peugeot 406 Combi (Estate) rear hatch applications. Often referenced by OE numbers listed above; confirm fit by matching part numbers and mounting style when ordering replacement units.
Replacement Procedure
- Tools: socket set, trim tools, screwdriver, pliers and a multimeter for electrical checks.
- Preparation: Park the vehicle with ignition off and apply the handbrake.
- Remove Wiper Arm: Pry off the plastic cover, remove the retaining nut, and pull the wiper arm from the splined shaft.
- Access Motor: Remove the inner tailgate trim panel (clips/screws) to reach the motor and linkage assembly.
- Disconnect: Unplug the electrical connector and detach any ground or securing clips.
- Unbolt Motor: Remove mounting bolts and separate the motor from the linkage; note orientation for reassembly.
- Install New Unit: Fit the replacement motor, secure mounting bolts, reconnect the linkage and electrical connector, and refit the trim.
- Final Steps: Refit the wiper arm on the correct spline position, tighten the retaining nut, and verify correct park position and sweep range with ignition on. Adjust arm angle if necessary.
Installation Recommendations
- Always disconnect the negative battery terminal before starting work to avoid short circuits and accidental activation.
- Clean electrical connectors and apply a small amount of dielectric grease to protect against corrosion.
- Inspect the wiper linkage, splines and mounting points for wear or play; replace worn components to prevent premature motor overload.
- When refitting, ensure the wiper arm is positioned correctly to avoid contact with bodywork or incomplete wiping.
- Use proper trim tools to avoid damaging interior panels; replace any broken clips.
Common Failure Modes
The most frequent causes of rear wiper motor failure are water ingress and corrosion of internal components, worn carbon brushes, stripped plastic gears in the gearbox, seized shafts due to lack of lubrication and connector corrosion. Heavy or frozen loads can also overload the motor and accelerate wear.
Why The Part Most Commonly Fails
Exposure to the elements on the tailgate makes the rear wiper motor particularly vulnerable to moisture and road salt. Over time, seals deteriorate and water penetrates the gearbox and motor housing, causing corrosion and electrical faults. Repeated starts under load (for example, when the wiper is frozen to the glass) place extra stress on brushes and gears, leading to failure.
Service Life And Practical Notes
Service life varies with usage, climate and maintenance. In regions with frequent rain, snow or use of road salt, motors typically show issues sooner. During replacement, check the whole wiper system (arm, blade, linkage and mountings) to ensure long-term reliability.
