Description
Central Locking Switch for Citroën C3 A51 2009–2016
This central locking switch is suitable for Citroën C3 II (A51) models from 2009 to 2016 and is commonly searched by part numbers 96656596KR and 6490ET. The unit provides reliable door lock/unlock control for mechanics and DIY enthusiasts replacing faulty switches or restoring interior convenience functions. Designed to match factory ergonomics and electrical connections, it integrates with the vehicle’s central locking system and is a direct-fit replacement on compatible trims.
Technical Information
- Manufacturer: Stellantis (Citroën/Peugeot)
- Model: Citroën C3 II (A51) 2009–2016
- Product Codes: 96656596KR, 6490ET
- Other Numbers: Commonly Listed Under Tags 6490ET | 96656596KR
Fitment And Compatibility
Fits Citroën C3 II (A51) produced between 2009 and 2016. Compatibility depends on vehicle trim and original equipment version — many customers search using the OEM part numbers 96656596KR or 6490ET to find the exact match.
Function And Typical Faults
The central locking switch controls the electrical signal to lock and unlock all doors and, on some trims, additionally triggers the alarm or interior central locking indicator. Common failure modes include worn contacts causing intermittent operation, moisture ingress leading to corrosion, and broken actuator housings or mounting clips. Electrical faults in the switch can produce no response from the locking system or erratic locking behavior.
Replacement Procedure
- Prepare: Park vehicle on a level surface, set ignition off and remove key.
- Safety: Always disconnect the vehicle battery before starting to avoid short circuits or accidental airbag deployment.
- Access: Depending on trim, the switch is accessed either from the door trim panel or the centre console. Carefully remove the trim using plastic trim tools to avoid damaging clips.
- Disconnect: Unplug the electrical connector from the switch. Note the connector orientation and any retaining clips.
- Remove: Unscrew or unclip the switch from its mounting point and replace with the new unit. Ensure the new switch sits flush and retaining clips engage properly.
- Reconnect: Plug the connector back in, reassemble the trim, reconnect the battery and test all lock/unlock functions and related indicators.
Installation Recommendations
Use appropriate trim tools to avoid breaking plastic clips. Verify connector pins are clean and free of corrosion before reassembly. After installation, test the switch several times to confirm reliable operation of all doors and any linked systems (e.g., alarm, interior locking indicator). If the vehicle exhibits central locking faults after swap, inspect fuses and wiring for damage before replacing additional components.
Why The Part Fails Most Often
Failures are usually caused by mechanical wear of internal contacts from repeated use, moisture ingress that corrodes electrical contacts, and physical damage from forceful operation or damaged trim during previous repairs. Poor electrical connections or intermittent wiring faults can also mimic switch failure.
Notes For Professionals And DIYers
Part numbers 96656596KR and 6490ET are frequently used to find exact replacements — include them in searches for faster identification. The switch is suited to professional workshops and skilled DIYers familiar with interior disassembly. If you encounter wiring issues or intermittent faults after swap, check for water leaks around the door seals and test the central locking actuators and wiring harness.
