Originally Posted by pattonsr
Can you relate more information on the Viper model you used. I remember last year the discussions over what alarm systems worked with the newest Sprinters.
Viper 5901 with lithium-ion backup battery. Doesn't shut off even if someone disconnects the main vehicle battery.
Vibration Sensor. A person putting his weight onto the running boards or bumpers will set it off, but a loud peal of thunder will not, so I don't have false alarms in a thunderstorm. Already tested in a thunderstorm.
Tilt Sensor. Alerts me to unauthorized towing, jacking up the vehicle to steal a tire, or even slashing a tire.
Glass Break Sensor. Sensitive enough to be set off if someone just taps on the glass with a piece of metal without actually breaking the glass.
Five-Tone Siren with Lithium-ion backup battery. LOUD! Also doesn't shut off even if you disconnect the main engine battery, but can be locked off with a key if you ever want to use valet parking and keep the remote with you. Even with the siren turned off with its key, the rmeote still alerts you to any alarm being tripped.
Two-way LCD remote, with a nominal 1-mile range. I've only tested it to 500 feet, but was indoors at the time, and it worked fine. Not only will tell me the alarm has gone off, but also which sensor was tripped.
Electroluminescent "Armed" display (with the Viper logo) on the windshield. Bright green, flashes on and off, visible from a LONG way off. This supplements, but does not replace, the standard blue flashing light inside the vehicle.
No remote start, though I can add that later if I want; don't trust an automotive remote start to handle a diesel engine that needs preheating in cold weather. NOTE: Without the remote start, the Viper 5901 is identical to a Viper 3303, except that the two-way remote has more than double the range, 1 mile vs. 2000 ft.
No door lock interface. At the present time, Viper does not have an interface module for 2010 or later Sprinter vans. When Mercedes took over the imprint from Dodge, they changed some of the electrical systems so a Dodge Sprinter interface module won't work. When the door lock module comes available (estimated 3-4 months from now), I will add it. Until then, I still have to use the Sprinter key remote to lock and unlock the doors, and the Viper alarm will not detect someone opening the doors if he manages to get a door open without breaking any glass. Once the Viper door interface module is (eventually) installed, I don't know if the Sprinter door remote will work anymore; stay tuned for that one.
No Proximity Sensor. I get irritated enough when I'm parked alongside a car with a proximity sensor, and while I'm getting into or out of my own vehicle the car next to me says, "Step away from the vehicle." I won't do that to others. Proximity sensor is overkill unless you have a convertible anyway, plus I don't know if it will work on a vehicle that large. I'll only see about adding one if the present system fails to act as a deterrent and I suffer another break-in, and then only to serve as additional advertisement that there IS an alarm system installed.
Total cost, parts and labor, tax included, $1155. About the same as a year's RV insurance for me.
There may be better alarm systems out there than Viper. I went on the recommendation of a coworker who has a Viper alarm on his sports car. No one else I knew was using a better competing system. And no, the dealer didn't influence my decision, even though the installer I chose turned out to be the same company the dealer chose to install the new Kenwood head unit. Either way, the alarm was installed at the same time the damage was repaired, which was convenient for me (and allowed the installer to put some alarm system components inside the dashboard that otherwise would have been under the dashboard).
And while it doesn't offset the cost of the alarm, just the fact that I installed it saves me an extra $80 per year on my RV insurance. Of course, all it has to do is stop one thief and it has paid for itself, but how will I ever know? You can't really prove that some event was prevented.
Down side to the Viper system, not including the present lack of a door lock interface, are that the electroluminescent display AND the antenna for communicating with the remote are both glued to the inside of the windshield. If the windshield is ever broken and needs replacement, I might need to replace those components as well.
The most important thing, since I had the alarm installed, no one has messed with the vehicle, and that's what it's all about.