07 sonata remote start with oem remotes

Has anyone installed an auto start using the factory remotes on a 2007 Hyundai Sonata? I was told by another installer that as soon as you lock the door with the remote,the remotes stop working and the add on auto start which can be programmed for 2 or 3 pulses would not work at all. Any info will be helpful.Thanks

Start the vehicle by key. Try hitting lock or unlock on the remote. Does it work? Probably not. Get a system with new remotes and have everything on one remote. You will also have better range.

The issue is not once you lock the doors, it is once the car is remote started the remote does not work.  If you follow JWorms instructions, you will know if it is possible. 

Factory remotes on that car definitely don't work with the car running. You could easily add a remote start to the factory remotes, and it would work fine too. But as soon as you come out of your house, you're forced to unlock the door with the key to get into the car. Although the factory remotes look nice and are well-made, they don't have very much range. The car's wiring for lock, unlock, alarm arm, alarm disarm, horn, and trunk are all in the driver's kick panel, and very easy to connect to. A remote starter with keyless, trunk, panic, and its own remotes only costs a little more than a standalone remote starter, and it's only those six extra wires you have to hook up, so it's not a whole lot more work or money to do it that way. Note that if you're having this professionally done, most shops do charge a good bit extra for hooking up these features, but it still shouldn't add more than $50-75 to the price. Also, if driver's-priority unlocking is important to you, mention that to the shop before the install. They can make the aftermarket remote unlock only the driver's door, and then press a second time to unlock the other doors, but they often won't do it unless you ask, and it usually costs a little extra.

Some vehicles do allow you to use the factory fob when the vehicle is running, but others wont. JWorm's test will confirm that. If your vehicle's keyless entry system doesn't work when the vehicle is on, it doesn't mean you're SOL just yet. Some vehicles (select Hondas have an ignition input into the keyless entry module (if not all controlled through the BCM) that disables keyless entry when the car is on. A simple relay to interrupt that wire while remote started would solve that issue.MECP Master Certified Technician

ASE A6 Certified Technician