Description
Electric motor for sunroof and sliding roof regulator for Citroën and Peugeot vehicles.
Overview
This direct-fit electric motor drives the sunroof/sliding roof regulator on compatible Citroën and Peugeot models. Designed for professional workshops and DIY mechanics, this unit restores smooth opening and closing of the glass panel and the sliding mechanism. The part is often searched for by its product codes, so you will find it listed under several reference numbers.
Key Benefits
- Direct replacement for worn or failed sunroof motors on compatible Citroën and Peugeot vehicles.
- Restores reliable movement and eliminates jerky or stalled operation.
- Suitable for professional fitment or competent DIY installation with basic hand tools.
Technical Information
- Manufacturer: Valeo / Webasto
- Model: Sunroof / Sliding Roof Electric Motor
- Product Codes: 404.424, 8401T2
- Additional Numbers: 1700468A, 17004680
Compatibility
Commonly fitted to various Citroën and Peugeot vehicles. Example model where this part is frequently used: Peugeot 307. Always match product codes listed above with the reference on the existing unit to confirm fitment.
Function
The motor converts electrical energy into rotational force to drive the sunroof regulator (gear or cable mechanism), enabling the glass panel to open, tilt and close. It works together with limit switches and the roof control mechanism to ensure correct end positions and safe operation.
Common Failure Causes
Sunroof motors typically fail due to mechanical wear and environmental factors rather than electronic circuit faults. The most frequent causes are:
- Worn carbon brushes or commutator wear inside the motor, causing intermittent operation or total failure.
- Gear or spline wear in the drive assembly that leads to slipping or loss of drive.
- Water ingress and corrosion from leaking sunroof seals, causing electrical shorting or seized bearings/gears.
- Accumulation of dirt and lack of lubrication in the regulator mechanism, increasing load on the motor.
Recommended Replacement Interval
There is no fixed mileage for sunroof motor replacement. Lifespan depends on usage, maintenance and exposure to moisture. Failures are more likely on older vehicles or where sunroof drainage and seals are compromised.
Installation Recommendations
- Disconnect the vehicle battery before starting work to avoid short circuits and accidental actuation.
- Remove interior trim or headliner panels carefully to access the sunroof motor and regulator. Support the glass panel to prevent damage while components are removed.
- Unplug the electrical connector and unbolt the motor from the regulator. Note the position of any shims or alignment marks.
- Inspect the regulator, gears, cables and drainage channels. Clean and lubricate sliding parts with an appropriate high-temperature grease before fitting the new motor.
- Fit the replacement motor, reconnect the wiring and reassemble trim. Cycle the sunroof several times to confirm smooth operation and correct end stops; adjust as required.
- Replace any damaged seals or clogged drains to prevent future water ingress and motor damage.
Why Professionals Prefer Correct Diagnosis
Symptoms such as slow movement, grinding noises or intermittent operation can come from the motor, the regulator gears/cables, or from drainage and seal issues. A quick visual inspection and comparison of product codes helps ensure the correct spare part is fitted and prevents repeated interventions.
Ordering Tip
Search using the product codes 404.424, 8401T2 or additional numbers 1700468A / 17004680 to locate the exact unit for Citroën and Peugeot applications—for example Peugeot 307 listings often reference these numbers.
