Original ECO OFF control / Stop & Start switch for Citroën and Peugeot cars. This is a used, fully functional part from the PSA concern, designed to temporarily turn off the Stop & Start system by pressing a button on the center console. An ideal replacement when the original button fails or when replacing the control panel.

Key benefits
– PSA OE quality: assurance of compatibility and correct function
– Accurate button response, reliable backlight
– Quick installation in the original opening without modifications
– Suitable for professional services and home repairs

Technical information
– OE (OEM) part number: 9809297277
– Function: deactivation of the Stop & Start system (ECO OFF)
– Location: center console / switch panel (according to the specific equipment of the car)
– Design: momentary button with electrical connector and backlight
– Condition: used original part, visually inspected and tested
– Delivery: exactly in the configuration according to the photos (compare the shape and pictogram)

Compatibility
– Citroën C-Elysée
– Peugeot 301
Note: May be applicable to other PSA models with matching part number 9809297277. Always compare part number and shape/connector to your original driver or verify by VIN.

When to change the controller
– The button does not respond or only responds occasionally
– The Stop & Start function cannot be turned off
– The backlight of the button does not work or the front of the button/panel is mechanically damaged

Assembly tips
– Disconnect the battery before working (for airbags and center console electrical circuits)
– Gently pry the panel out with a plastic pry, disconnect the connector and replace piece by piece
– After assembly, check the function of the button and the backlight

Frequently searched terms
– Citroën/Peugeot ECO OFF controller
– PSA Stop & Start switch
– ECO OFF button 9809297277
– Controls and switches – PSA electrical components

Important
– Before purchasing, check the match of part number 9809297277 and compare the connector/location with your car.
– This is an original used part; minor cosmetic signs of use are possible, functionality is verified.
– Guarantee of functionality and the possibility of return according to the terms and conditions of the e‑shop.

The ECO OFF Start-Stop control switch (part number 96671871XT) is a direct-fit replacement switch originating from the Peugeot 308 (T7) series. Designed for mechanics and experienced DIYers, this switch lets drivers disable the vehicle’s automatic start-stop system when required. Supplied as an OE-style unit for Citroën and Peugeot vehicles, it is frequently searched by its product code 96671871XT, making it easy to find in parts catalogs and online listings.

Technical Information

• Manufacturer: Stellantis
• Model: Peugeot 308 (T7)
• Product Codes: 96671871XT
• Other Numbers: No Additional OEM Numbers Available

Function And Fitment

This switch controls the Start-Stop system enable/disable function (ECO OFF). When activated, it prevents the engine from automatically stopping at idle under the start-stop logic, giving the driver manual control over the system. The unit fits Peugeot and Citroën vehicles that use the same switch assembly as the Peugeot 308 T7; always verify the product code 96671871XT when searching for compatibility.

Replacement Procedure

Replacement is straightforward for an experienced technician or an equipped DIYer. Typical steps:

1. Ensure The Vehicle Is Secure: Park on a level surface, engage the parking brake and remove the key from ignition where applicable.
2. Disconnect The Battery: For safety and to avoid electrical damage, disconnect the negative battery terminal before starting work.
3. Remove Trim Panels: Carefully pry away the surrounding trim or bezel using appropriate plastic trim tools to avoid marks or broken clips.
4. Release The Switch: Unclip or unscrew the retaining mechanism holding the switch in place (method depends on trim design).
5. Disconnect Electrical Connector: Unplug the switch connector by releasing its locking tab and gently pulling straight out.
6. Install New Switch: Plug in the new switch, secure it in the trim opening, refit panels, reconnect the battery and test the function of the Start-Stop/ECO OFF system.

Installation Recommendations

• Use Trim Removal Tools To Prevent Damage To Panels And Clips.
• Handle Electrical Connectors By The Housing, Not The Wires, To Avoid Breakage.
• After Installation, Verify Switch Illumination And That The Start-Stop System Responds Correctly To The Switch Position.
• If You Encounter Fault Codes Or Unexpected Behavior, Diagnose The Vehicle With Proper Diagnostic Equipment.

Why This Part Most Commonly Fails

Common failure modes for Start-Stop/ECO OFF switches include:

• Mechanical Wear: Repeated pressing causes internal contacts or plastic actuator parts to degrade or break over time.
• Electrical Contact Degradation: Oxidation or carbon buildup on contacts can lead to intermittent operation or complete failure.
• Moisture And Contaminants: Spills, humidity, or dirt ingress can corrode contacts or damage internal LEDs and electronics.
• Connector Or Wiring Issues: Broken wires, poor terminal engagement, or corroded connector pins can interrupt the circuit.

There Is No Fixed Service Interval For This Switch; Its Lifespan Depends On Usage Frequency, Environmental Exposure And Handling During Interior Work.

Search And Identification Tips

This part is commonly searched by its OE code 96671871XT. When ordering or searching online, use the product code and model reference (Peugeot 308 T7) to increase the chance of finding the correct match.

Replacing the ECO OFF Switch is straightforward and can typically be done in under an hour with basic tools. It is recommended to check all connections and ensure proper functionality after installation. This part is essential for those who prefer to disable the Start-Stop feature, which may not be suitable for all driving conditions.

Symptoms of a failing switch may include intermittent functioning, failure to disable the Start-Stop system, or dashboard warning lights. It is advisable to replace the switch if issues arise to maintain optimal driving performance.

Technical Information

• Manufacturer: PSA Group
• Model: Citroën C4 Picasso, Peugeot vehicles
• Product Codes: 96670791XT
• Other Numbers: Not Applicable