1. Battery Check: Ensure the new battery is properly installed and making good contact with the terminals. Double-check the battery type to ensure it's compatible with your key fob.
2. Key Fob Reset: Try resetting the key fob again. Refer to your vehicle's specific user manual for the correct reset procedure.
3. Spare Key Fob: If available, try programming a spare key fob to see if it works. This can help determine if the issue is with the key fob itself or the car's receiver.
4. Receiver Issue: There might be a problem with the car's key receiver. Some Citroens have a dedicated receiver unit. Check the receiver's location (often near the steering column) and ensure it's properly connected.
5. Electrical Fault: If the new key fob and the spare (if tested) both fail to work, it's possible there's an electrical fault in the car's keyless entry system. This may require professional diagnosis and repair at a Citroen dealership or a trusted mechanic.
