Hello guys, just searched the forum but couldn't find an answer.

sometimes I need to lock my '02 X5 while keeping engine running, key is in switch, no one inside the car (to push the central locking button).

What are my choices to do so?

The reason why I want this: Here in Saudi Arabia, the weather is extremely hot & sun is very bright (and gas is cheap ).

If you want to park for a minute (e.g. to buy something from market) and you switch it off, you'll find your leather seat burning when you come back!

Now, if my wife is with me she can lock/unlock using center lock button.

But if I'm alone I'll need to keep it running and locked.