Have spare hyundai key. Never used has lost sync with car. Called auto lock smith.Computer gave pin code car would not accept reprogramming not possible. Car to dealership or they give me the code?

and your question is

Call a mobile lock smith , they can reprogram the key

try again start over from 1st step.
here is overview https://www.infiniti-techinfo.com/lsdemo/Overview%20of%20the%20SDRM%20process.PDF

you or your lock smith can obtain your own code based off the bcm code on the lable anytime at key code/immobilizer:
https://www.infiniti-techinfo.com/Home.aspx

Select a Product. Available Products are:
Key codes for 1998 MY and later Nissan and Infiniti vehicles.
Immobilizer PIN codes for late model Nissan and Infiniti vehicles.
For a table of applicable models, refer to the "Overview of the Process" documents to the left of this page.
Nissan does not provide refunds on any "Security Professional" purchases.
1. Annual Security Professional Subscription $300.00 2. Immobilizer Reset Request $10.00 3. Immobilizer Reset Request (Transaction PIN) $0.00 4. Key Code and Immobilizer Reset Request $15.00 5. Key Code Request $10.00

Hi Russell, Im AL the owner of Big As Auto Repair.

Russell, you cannot start a security installed vehicle with a none security key. If you have lost your key to the vehicle then here's what you can do. Take the last 8 of your VIN Number and your vehicle to the Mitsubishi Dealer and they can cut and program a new key to the security module. NOTE: Another way to do this is to have the dealer cut a new key for the vehicle and then call around to find a lock smith that has the ability to program the key to the vehicle. NOTE: I would check to see which way is cheaper. To Tow the vehicle OR have a lock smith come to you. Hope this helps and please visit my auto-repair-website here: http://www.bigasautorepair.com/

The dealership is protecting you from car thieves. Good for them. Go to a lock smith not the key machine at Walmart to get a key made.

Some of these keys can be made at the dealer with just the vans id #, you can call the dealer service dept and see if they will cut a new key. then some of these need reprograming, the dealer or an auto lock smith can cut a key and program it.

You can call a lock smith and they can come out and fix it, if you have towing service then call tow company so they can take the car to a lock smith to save the charge of the lock smith, they now have the ability to make keys for the ping style locks that came out in 2000 or earlier and having the key that mates to the lock will make it cheaper but the will have to program the new key with your computer.

Does the Key have fob if so you need to take the fob out of the spare key and insert it into the original Key to get it to work. or take it to a lock smith and they can do it for you around $10.00.

the only way u can get a key made is @ a dealer ship , the key hase a computer chip in it and it cost about $ 50.00 to get one made.

the ignition keys are not coded. no "chip" in them you should be able to just have a spare key cut and it will work fine. These use an electronic device in key cylinder that senses the proper rotation of cylinder and tumblers. so if someone tries to pry on with a screwdriver it will disable starter. when this is replaced it has to be reprogrammed