How do you unlock your new car?

[Xocai]

/carhelp won't work.

[Kiyomi]

You unlock/lock it with, /lock

Make sure you own it and you must be close to it to lock/unlock,
also, if you want to know the commands for the car, use /vehiclehelp instead of /carhelp

[Bella]

/vehiclehelp /lock

[DeLiveR]

If you got the key or own it then /lock

[Fox]

/lock and /vehiclehelp, also you can use /n to ask and /helpme too

[Emily Grey]

http://www.gta-sarp.com/forums/showthread.php?108228-How-do-you-unlock-your-new-car&p=836330&viewfull=1#post836330
This post sums it all up pretty much. Since this thread hasn't been posted on in nearly a week I'm assuming this is answered, pm a section moderator if you want the thread reopened for whatever reason.