it is not an issue nor is any device faulty :)
heated seats and mirrors is not a supported feature through CAN-BUS on that vehicle.
If you want those to activate upon remote start, it would require physical connections using your remote starter AUX outputs. The viper installation should have information on their AUX outputs.
For parking lights to work, they need to be connected from your viper remote start to the car. If they are, and it still doesnt work, go over the wiring and test your viper parking light output to ensure it is working. The may have setting of sort as well that chooses wether the output is a (+) or (-). Verify with them and their installation guide.