Open the back doors of the car, there should be a switch between the inside and outside of the door.
Automatic door locks engage on the 2003 Ford Explorer for safety.
When you open the doors there is a lever on the door itself that you can switch up or down depending on if you want to engage or disengage the child safety locks. There should be a sticker indicating which way to lock-unlock.
On your 1997 Mercury Mountaineer : Open the rear doors from the outside and on the end of the doors near the latch you will see a small lever that is used to select child locks on or off
2009 CTS V Cadillacs do have child safety locks as well as other safety features. Though the child locks are the standard issue, most of their other features are more recent.
you might have the child safety locks activated
Rear Door Child Safety Locks (Sedan and Wagon models only) Child safetly locks are located on the rear edge of each rear door. To activate the locks, you must insert your car key into the opening and turn to the locked "vertical" position. To disengage the child safety lock, insert your car key and turn to the center position.
Safety features on the Buick Rendevous include airbags, anti-lock breaks and child safety locks. The child seats also have air bags.
A little switch on the door
DID YOU CHECK CHILD SAFETY LOCKS ON DOOR
The child safety locks may be in the lock position.
Lots of techniques are available. Mostly magnetic locks are in use for cabinets. You can use child lock also if you want.
The BMW 745li comes with a host of standard features. Child safety door locks, vehicle anti-theft protection, power door locks, remote keyless entry, 4 wheel ABS, auto engage parking brake, engine oil cooler and many, many more.