Description
Electronic parking brake switch for Citroën C4 Picasso up to 2013. Original.
High-quality replacement electronic parking brake (handbrake) switch designed for Citroën C4 Picasso models produced up to 2013. This compact control delivers reliable operation of the electric park brake system and is often searched for by its part numbers 96597938ZD and 470703. Ideal for professional workshops and DIY mechanics who need a direct-fit OEM-style switch to restore proper handbrake control, improve safety and eliminate warning lights related to the parking brake circuit.
Technical Information
- Manufacturer: Stellantis (Citroën/Peugeot OEM)
- Model: Citroën C4 Picasso (up to 2013)
- Product Codes: 96597938ZD, 470703
- Additional Numbers: None Specified
Function And Benefits
The switch operates the electric parking brake actuator by sending the driver’s command to the vehicle’s brake control system. A correctly functioning switch ensures smooth engagement and release of the park brake, prevents false dashboard warnings, and maintains proper interlock with other systems (e.g., hill-hold, automatic transmission interlocks).
Replacement Procedure (Overview)
- Disconnect Battery: Always disconnect the negative battery terminal before starting to avoid short circuits and to protect vehicle electronics.
- Remove Trim: Carefully remove the center console trim surrounding the switch using appropriate trim tools to avoid breaking clips.
- Unplug Connector: Release the electrical connector by depressing the locking tab and gently pulling it free.
- Detach Switch: Release any retaining clips or screws and remove the faulty switch from the console panel.
- Fit New Switch: Insert the replacement switch into the mounting opening until it locks securely, reconnect the electrical connector.
- Reassemble And Test: Refit trim, reconnect the battery, cycle ignition and test park brake operation. Check instrument cluster for warnings and perform a function test (engage/release) to confirm correct behavior.
Installation Recommendations
- Use Proper Tools: Plastic trim tools reduce the risk of damaging interior panels and retaining clips.
- Follow Manufacturer Procedure: Observe torque and removal sequence for trim and fasteners when applicable.
- Check Wiring And Connectors: Inspect the connector pins and wiring for corrosion or damage; clean contacts if necessary before installation.
- Diagnostic Check: If warnings remain after replacement, read fault codes with an OBD/diagnostic tool and clear codes after repair; some vehicles may require a basic system check or initialization.
- Safety First: Keep hands and tools clear of moving parts during functional tests.
Why This Part Fails
Electronic parking brake switches commonly fail due to frequent mechanical use, contamination (dirt, moisture, spilled liquids), worn electrical contacts or internal switch mechanism fatigue. Physical damage from impacts or improper removal of trim can also render the switch inoperative. In some cases, connector corrosion or wiring faults cause intermittent operation or dashboard warnings.
Replacing the switch with the correct OEM-coded unit (96597938ZD / 470703) restores reliable park brake control and reduces the likelihood of related electrical faults when installed and tested correctly.
