If you're looking to increase the range of your factory remote start, there are a few things you can do. First, make sure the antenna on your vehicle is in good shape and positioned correctly. If you have an aftermarket alarm system, check the settings to see if the range can be increased. You can also try using a signal booster, which will amplify the signal from your remote and extend its range. Finally, keep in mind that obstacles like metal objects or thick walls can impede the signal from your remote, so try to avoid starting your car in areas where there are lots of obstacles.