My car was automatically locked whenever I start it and press the
brakes, but since yesterday this is not happening, although when I do
it manually by pressing the lock button and then turn of the car it is
automatically opening the locks.

Any idea what could be the problem?

Thanks

 

With my car's remote entry and auto starter there's a switch on the
driver's side near the hood release that turns off the remote entry
system and also prevents the doors from locking when I hit the brakes
after starting the car. If you have such a switch you may've hit it
accidentally, as I have before, with your leg or foot.

 

With my car's remote entry and auto starter there's a switch on the
driver's side near the hood release that turns off the remote entry
system and also prevents the doors from locking when I hit the brakes
after starting the car. If you have such a switch you may've hit it
accidentally, as I have before, with your leg or foot.