My car's central locking system is acting up. At first, the doors would no longer auto-lock when I step on the brake pedal before the start of a journey. Then, the doors would not unlock when I activate the remote key. Is this going to be a costly problem to fix?
One common cause of car doors failing to respond to the remote key is a weak battery in the key. Simply replacing the battery will fix the issue.
But the problem you described is most likely to do with a faulty central lock/alarm control unit. This component is fairly inexpensive to replace and should cost you around $100 or less.