Just bought a 2002 echo 2-door and the power door locks are misbehaving.
They lock OK. For example, locking the driver's side locks the passenger door too.
However, after several minutes both doors automatically unlock themselves! In other words, the doors *will *not *stay *locked.
The key has no chip in it, and I am not using any kind of remote (none came with the car).
Has anybody seen this before? Any suggestions? Thanks!