My central locking has progressively been getting worse over the past few months. Sometimes it works, sometimes it doesn't. Now it's gotten to the point where it never works. My headlights still flash as it arms and disarms the alarm, and my boot still opens consistently.
I thought it was the battery in the key fob, but I changed it, and apparently not. Some guy at Battery World tested my car battery, and said it needed recharging, that my short trips to work and back were draining the battery. This sounds plausible, except that I have no issue starting my car. Surely starting the car uses more battery power than unlocking and locking the doors? Or are our cars so smart that it diverts power that even when the battery is so low that the central locking doesn't work, that you can still start the car? I bought a low power battery charger, and after 12 hours of charging, still no luck. But then again it might take a few days of charging to be full.
Did I get ripped off? Does the central locking go before the ability to start the car does?