This genuine OEM electronic parking brake (EPB) switch is a direct fit for a range of Stellantis vehicles and is commonly searched by part number for fast identification. Designed for professional workshops and skilled DIYers, the unit provides reliable control of the electric parking brake mechanism and restores normal operation in cars where the original switch is damaged or worn. Ideal when the original button is cracked, unresponsive or shows intermittent function, this switch brings back tactile feedback and correct EPB command signals to the vehicle control system.

Technical Information

• Manufacturer: Stellantis (Citroën / Peugeot)
• Model: Citroën C4 Picasso (up to 2013), DS4, Peugeot 3008 I, Peugeot 5008 I
• Product Codes: 9666405677, 470706, 470703
• Other Numbers: 470706 (reference), 470703 (alternate reference)

Fitment And Function

The switch mounts in the center console and sends electrical pulses to the EPB control system to engage or release the parking brake. In normal operation the driver presses or releases the switch to command the EPB motor/actuator. Symptoms indicating a faulty switch include inability to engage/disengage the parking brake, illuminated EPB warning light, or intermittent operation requiring multiple presses.

Installation Recommendations

• Always disconnect the vehicle battery before starting work to avoid short circuits or damage to vehicle electronics.
• Remove the center console trim panels carefully to access the switch. Use trim tools to avoid damaging clips and surrounding plastic.
• Unplug the electrical connector and remove the retaining screws or clips holding the switch in place. Replace with the new unit and ensure the connector is fully seated and locked.
• Reassemble trim and reconnect the battery. Perform a function test: operate the parking brake several times and verify indicator behavior on the instrument cluster.
• If The Vehicle Displays EPB Faults After Replacement: Some vehicles require an EPB initialization or calibration using a diagnostic tool compatible with PSA/Stellantis systems (for example DiagBox). If initialization is required, perform it with proper diagnostic equipment or have it completed by a qualified workshop.
• Follow manufacturer service procedures and torque specifications where applicable to avoid damage during reassembly.

Why This Part Most Commonly Fails

Failure of the EPB switch is usually caused by mechanical wear of the switch mechanism, degraded internal contacts, or contamination from spilled liquids and dirt getting into the console. Repeated heavy use, brittle plastics from age, and connector corrosion can also lead to intermittent or permanent loss of function. In some cases, what appears to be a switch fault is actually an issue with wiring, connectors or the EPB actuator/control unit, so inspect related components during replacement.

This used unit has visible signs of prior use but is fully functional. If you rely on accurate part matching, use the product codes listed above when searching or ordering to ensure correct fitment.

Suitable For Mechanics And Experienced DIYers Looking For A Cost-Effective Replacement That Restores EPB Operation Quickly.

This electronic parking brake switch is a direct-fit aftermarket replacement designed for Citroën and Peugeot vehicles equipped with an electric handbrake system. Ideal for professional mechanics and DIY enthusiasts, the unit restores reliable control of the electronic parking brake and eliminates common faults such as warning lights, failed engagement or inability to release the brake.

Features

• Direct-fit replacement for affected Citroën and Peugeot models
• OE-style electrical connector for reliable signal transmission
• Compact design for simple installation behind center console trim
• Aftermarket new part, supplied ready for installation

Compatibility

Designed For Use On:

• Citroën C4 Picasso (models up to 2013)
• Citroën DS4
• Peugeot 3008 I (First Generation)
• Peugeot 5008 I (First Generation)

Function

The switch operates as the driver interface for the Electronic Parking Brake (EPB) system. When activated, it sends the command to the vehicle control module to engage or release the electric parking brake actuators at the rear wheels. A correctly working switch ensures safe parking, hill-hold performance and prevents parking brake warning faults.

Replacement Procedure

1. Park the vehicle on a flat surface and apply appropriate safety measures.
2. Disconnect the negative battery terminal before starting work.
3. Remove center console trim or surrounding bezel to access the EPB switch (trim tools recommended to avoid damage).
4. Unplug the electrical connector from the old switch and remove any retaining screws or clips.
5. Fit the new switch, secure fastenings and reconnect the electrical connector.
6. Reinstall trim pieces, reconnect the battery and perform a system check.
7. After installation, carry out EPB initialization or system check using a diagnostic tool or follow the vehicle service manual procedure to ensure proper calibration.

Why The Part Most Commonly Fails

• Electrical Contact Wear Or Oxidation: Frequent use and moisture ingress can degrade switch contacts, causing intermittent function or failure.
• Mechanical Wear: Repeated actuation and harsh handling of trim can damage the switch mechanism or mounting points.
• Connector Or Wiring Issues: Corroded pins or damaged wiring can interrupt the signal to the EPB control module, producing warning lights or fault codes.
• Symptoms Of Failure: Illuminated parking brake or ABS/ESP warning lights, Inability To Engage/Release The Parking Brake, Intermittent Operation.

Technical Information

• Manufacturer: Aftermarket (Compatible With Citroën/Peugeot)
• Model: Electronic Parking Brake Switch / EPB Switch
• Product Codes: 9666405677, 470706, 470703
• Other Numbers: No Additional Numbers Provided

Installation Recommendations

Always Disconnect The Battery Before Starting Work. Use Proper Trim Tools To Avoid Damaging Interior Panels. After Fitting The New Switch, Perform A Full System Check And, If Necessary, An EPB Initialization Using A Suitable Diagnostic Scanner Or Follow The Manufacturer’S Service Procedure To Avoid Fault Codes.