Citroën C4 Mk1, 2004–2010 C4 Remote Key Mk2 (B7), 2010–2018 PSA Smart Key Mk2 (B7), 2010–2018 Citroen Remote Key Mk3 (C41), 2020–2026 PSA Smart Key Mk3 (C41), 2020–2026 C3/C4 Remote Key