Recently, I decided to upgrade my 2005 Chrysler 300 with a Viper 5900 remote start and alarm system, boasting a considerable range. Initial tests are promising, and I’m looking forward to putting the range to the mile-long test.
The installation process involved some interesting technology to integrate with the existing vehicle security. To bypass the factory key fob requirements for starting the car, the installers used an interface module. This module essentially duplicates the functionality of both of my original 2005 Chrysler 300 Key Fobs and stores that data. By mimicking the key fob’s signal, the car is tricked into thinking the key is present, enabling the remote start feature. This interface module added a bit to the installation cost, approximately $50, but it was essential for the system to function correctly.
However, this interface, lacking its own power source, seems to trigger the “battery message” on the Electronic Vehicle Information Center (EVIC). Additionally, when the ignition key is turned to ACC, the heater and navigation system temporarily shut off. These systems reactivate once the brake pedal is pressed. While these are minor quirks, they are not significant drawbacks to the overall functionality.
The real advantage of this setup is the ability to use a simple key copy with the remote start. I tested this by disassembling my 2005 Chrysler 300 key fob, removing the metal key, and using it in the ignition after remote starting the car. The vehicle continued to run without any issues! This is a significant convenience, as it potentially allows me to carry only one remote for daily use. I plan to get a key copied at Home Depot soon to take full advantage of this.
One unresolved issue is the trunk release function on the new Viper remote. It’s not currently working. A trip back to the installer will be necessary to address this and hopefully get it resolved.
