In the summer it's nice to keep the engine running while you step outside for a few minutes in order to keep the AC running at full speed. However most cars I've seen don't have this feature and you have to choose between keeping the doors locked and keeping the engine running, even with keyless models.

Why isn't there a feature to lock the doors while keeping the car on?

closed as primarily opinion-based by cory, Pᴀᴜʟsᴛᴇʀ2 Mar 29 '17 at 20:04

Many good questions generate some degree of opinion based on expert experience, but answers to this question will tend to be almost entirely based on opinions, rather than facts, references, or specific expertise. If this question can be reworded to fit the rules in the help center, please edit the question.

  • If you have two keys you can normally leave one key in and lock the door with the other using the actual physical lock (not the remote buttons) – George Mar 29 '17 at 19:31
  • My jaguar won't let you lock the car with one key when the other is in the ignition : not an opinion as I have tried it !!! – Solar Mike Mar 29 '17 at 20:14

I would think it would be because so many owners would be capable of locking their keys in the car...

Also, in some countries, it is an offence to leave a car running if no-one is in it.

  • But in order to lock the doors from the outside you need to have your keys? – JonathanReez Mar 29 '17 at 15:48
  • No, some cars you can operate the lock with the door open and shut the door - ex-girlfriend did that to me - after being told "don't lock the door and shut it" ... – Solar Mike Mar 29 '17 at 15:54

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