This high-quality replacement switch is designed to restore reliable control of the rear window defogger on Citroën Berlingo II and Peugeot Partner II models. Ideal for professional mechanics and competent DIYers, the switch is commonly searched and identified by the reference numbers 9644851077 and 6554AF. The unit provides positive tactile feedback, integrated illumination for nighttime use and straightforward plug-and-play replacement in most installations. Replacing a faulty switch quickly brings back rear-window demisting functionality, improving visibility and safety in wet or frosty conditions.

Technical Information

• Manufacturer: Stellantis (Citroën / Peugeot)
• Model: Citroën Berlingo II; Peugeot Partner II
• Product Codes: 9644851077, 6554AF
• Other Numbers: 6554AF | 9644851077

Function And Application

The switch controls the rear window heating (defogger) circuit, typically energizing the rear heated-glass element via a dedicated relay and fuse. It also usually contains an indicator lamp or LED to show when the grid is active. This switch is intended for dashboards and control panels original to Citroën Berlingo II and Peugeot Partner II vehicles where the listed reference numbers match.

How To Replace

1. Disconnect The Battery Before Starting Work To Avoid Short Circuits And Protect Vehicle Electronics.
2. Remove The Trim Surrounding The Switch Using Appropriate Trim Tools To Prevent Damage.
3. Release The Switch From The Panel (Usually Retained By Clips) And Pull It Out Gently.
4. Disconnect The Wiring Harness Connector From The Rear Of The Switch.
5. Fit The Replacement Switch, Reconnect The Harness And Test Rear Heater Operation Before Reassembling Trim.

Installation Recommendations

• Always Disconnect The Battery Before Demounting Or Mounting The Switch.
• Inspect Connector Pins And Wiring For Corrosion Or Damage; Clean Contacts And Apply A Small Amount Of Dielectric Grease If Suitable.
• Check Related Fuses And The Rear-Window Heater Relay If The New Switch Does Not Activate The Grid—Failure Is Not Always The Switch.
• Ensure Proper Fitment And Orientation When Pressing The New Switch Into The Panel To Avoid Breaking Retaining Clips.

Most Common Failure Causes

Failures Usually Result From Worn Electrical Contacts Or Burnt Traces Caused By High Current Switching Over Time. Other Typical Causes Include Moisture Ingress Into The Connector Or Switch Housing, Mechanical Wear Of The Actuation Mechanism, And Failed Internal Illumination (Bulb Or LED). In Some Cases The Switch Appears Dead But The Real Issue Is A Blown Fuse Or A Faulty Relay In The Defogger Circuit.

Notes For Professionals And Enthusiasts

• Reference Numbers 9644851077 And 6554AF Are Frequently Used By Customers When Searching For This Part — Including These In Product Listings Improves Findability.
• Test The New Switch Immediately After Installation To Confirm Correct Operation Of The Rear Heater And Indicator Lamp.
• Keep The Vehicle Manual Or Wiring Diagram Handy When Diagnosing Related Electrical Issues.

Warranty And Quality

Supplied As A Direct-Fit Replacement Intended To Match Original Functionality. Suitable For Workshop Use And DIY Repairs Where Reference Numbers Match The Vehicle Requirement.

If you’re looking for an original rear window defroster switch for your Citroën C1 or Peugeot 107, this fully functional used unit is an excellent choice to replace a damaged or non-functional part. It offers precise compatibility and performance tailored specifically to these models, making it a trusted option for both professional mechanics and DIY car enthusiasts.

The switch plays a crucial role in controlling the defrosting system, especially during colder and damp seasons where clear rear visibility is essential for safe driving. Maintaining the proper function of this switch ensures your vehicle’s rear window remains free of condensation and frost, enhancing overall comfort and safety.

Technical Information

• Manufacturer: PSA Citroën Peugeot
• Models: Citroën C1, Peugeot 107, Toyota Aygo
• Product Codes: 84790-0H010, 654612
• Additional Numbers: Provided for full reference and easy identification.

Replacement parts like this defroster switch are essential for keeping your vehicle in optimal condition. The installation process is straightforward and can be performed with common tools, saving both time and money compared to professional service visits. Its durability and reliable operation make it a valuable investment for maintaining original equipment quality in your Citroën C1 or Peugeot 107.

Don’t wait for unexpected issues; keep your vehicle in perfect shape with our high-quality used parts designed for seamless fit and reliable performance.

Typically, this controller has a lifespan that may vary depending on usage and environmental conditions. However, like many electrical components, it can fail due to wear and tear, consistent exposure to moisture, or electrical issues within the vehicle. Therefore, regular checks are advisable, especially during seasonal changes, to ensure optimal functionality.

Replacing the Rear Window Heating Controller is straightforward and can typically be done with basic tools. Ensure that the vehicle’s electrical system is disconnected before performing any installation to prevent accidents.

Technical Information

• Manufacturer: PSA
• Model: Citroën Xsara and others
• Product Codes: 655497
• Other Numbers: NFP

This essential component operates the heating elements in the rear window, ensuring maximum visibility during cold weather conditions. It is crucial for maintaining safety while driving in adverse weather. Over time, the controller can wear out due to constant use, so it is advisable to replace it if you notice any dysfunction or delay in heating the rear window.

Regular maintenance of this part is recommended to ensure optimal performance during winter months or in colder climates.

Technical Information

• Manufacturer: PSA
• Model: Citroën Berlingo I, Peugeot Partner I
• Product Codes: 655492, 6552PJ
• Additional Numbers: 6552PJ, 655492