Hi all, I'm now in France & the FOB isn't affecting the central locking of the car, W203 C200CDi SE (taxi spec). The metal key locks/unlocks the drivers door & the dashboard button operates the central locking, as does the speed actuated facility. The fob flashes its' light when you press the lock or unlock button but the car seems unimpressed. I've measured the CR2025 batteries in the fob & they're 3.05v each. any idea where I should look? Pretty please!