What Viper Remote Start Does
A Viper remote start system lets you start your car's engine from a distance using a key fob or smartphone app, without being inside the vehicle. The system is wired into your car's ignition and electrical systems, so pressing a button on the remote sends a signal that cranks the engine and runs it until you arrive or press stop.
Viper systems are made by Directed Electronics, a company that specializes in car security and convenience products. The remote start feature comes as part of a larger alarm and security package, though you can use remote start independently from the alarm functions. Most Viper systems work from 1,000 to 1,500 feet away, depending on the model and local interference.
The engine will run for a set time — usually 10 to 15 minutes — then shut off automatically if you don't get in the car. This prevents fuel waste and keeps the battery from draining. You can extend the runtime by pressing the remote start button again before the timer expires.
Key Takeaways
- Viper remote start requires professional installation into your car's ignition and electrical systems, which typically costs $300 to $800 depending on your vehicle.
- The system needs a clear line of sight to work reliably; buildings, dense trees, and metal structures reduce range significantly.
- Your car's doors lock automatically when remote start activates, and the engine shuts off after 10 to 15 minutes if you don't arrive.
- Viper offers both traditional key fob remotes and smartphone app control through their Viper SmartStart platform, though app control requires a paid subscription.
- Remote start will not work if your car is already running, if the hood is open, or if the parking brake is not engaged.
How to Use the Remote Start Button
Using Viper remote start is straightforward once the system is installed. Hold down the remote start button on your key fob — usually labeled with a car icon or engine symbol — for about three seconds. You'll see the car's lights flash and hear the horn chirp once or twice, signaling that the remote start command was received.
The engine will crank and run. Your car's doors automatically lock when the engine starts, and the climate control system (heat or air conditioning) will run at whatever setting was last used. Walk to your car normally; you don't need to do anything else. When you reach the car, unlock it with your key fob or key, get in, and drive away. The remote start will shut off automatically once you shift into gear.
If you want to stop the engine before you arrive, press the remote start button again. The engine will turn off when ready. If you don't arrive within the runtime window — usually 10 to 15 minutes — the engine shuts off on its own to save fuel and battery power.
Installation Requirements and Costs
Viper remote start systems must be installed by a professional technician, not as a do-it-yourself project. The installer runs wires from the system module to your car's ignition switch, starter, parking brake, and other electrical components. This work requires access to your car's steering column and dashboard, which is why professional installation is necessary.
Installation costs typically range from $300 to $800, depending on your vehicle's make and model. Newer cars with more complex electrical systems and push-button ignitions cost more to install than older vehicles with traditional key ignitions. Some car alarm shops, Best Buy locations with car installation services, and independent auto shops offer Viper installation. Call ahead to confirm they work with Viper systems and ask for a quote specific to your car.
The Viper system itself — the module, remote, and wiring harness — costs between $200 and $500 depending on which model you choose. Viper offers several tiers: basic systems with just a key fob remote, mid-range systems with smartphone capability, and premium systems with additional security features. Factor the hardware cost plus installation into your total budget.
Using Viper SmartStart App for Smartphone Control
Viper's smartphone app, called Viper SmartStart, lets you start your car from your phone instead of using only a key fob. You read the app, create an account, and pair it with your Viper system during installation. Once set up, you can remote start your car, lock and unlock doors, and check your car's location from anywhere with a cellular signal.
SmartStart requires a paid subscription, typically around $10 to $15 per month or $100 to $150 per year. The subscription covers the cloud service that relays commands from your phone to your car. Without an active subscription, the app will not function, though your physical key fob remote will continue to work normally.
The app is useful if you frequently lose your key fob or want to start your car from inside your home or office. Keep in mind that smartphone control depends on your phone's cellular connection and your car's connection to Viper's servers, so it's slightly less reliable than a direct key fob signal. The key fob remains your backup method.
When Remote Start Won't Work
Viper remote start has built-in safety features that prevent it from starting in certain situations. The system will not start the engine if the car is already running, if the hood is open, or if the parking brake is not engaged. These safeguards prevent accidental double-starts and may support the car is in a safe state before the engine cranks.
Range and signal obstacles also affect whether remote start works. If you're too far away — beyond 1,000 to 1,500 feet depending on your model — the signal won't reach. Large buildings, parking garages, dense trees, and metal structures block or weaken the radio signal. In these situations, you may need to move closer to your car or use the smartphone app if you have SmartStart, since cellular signals often penetrate obstacles better than radio signals.
Some vehicles with advanced security systems or push-button ignitions may require additional modules or have compatibility issues. If your car has an immobilizer or keyless entry system, your installer will need to integrate the Viper system with those components. Always confirm with your installer that your specific car model is compatible before paying for the system.
Maintenance and Troubleshooting
Viper remote start systems require minimal maintenance. Replace the batteries in your key fob every 12 to 18 months, or when the remote stops responding from normal distances. Most Viper fobs use standard CR2032 or similar coin-cell batteries available at any pharmacy or electronics store.
If remote start stops working, first check that your car's parking brake is engaged and the hood is closed. Try the remote from a closer distance to rule out range issues. If the fob still doesn't respond, replace the battery. If a new battery doesn't fix it, the fob itself may be damaged, and you'll need to purchase a replacement remote from Viper or your installer.
If the system worked before but suddenly stopped, the issue may be with the installed module rather than the remote. Contact the shop that installed your system; they can diagnose whether the wiring has come loose, a fuse has blown, or the module itself has failed. Most shops offer warranty service on their installation work for the first year.
Viper Remote Start vs. Factory Remote Start
Some newer cars come with factory remote start built into the key fob or available through the manufacturer's app. Factory systems are integrated into the car's computer and often work more reliably than aftermarket systems. However, factory remote start is only available on certain trim levels or as an expensive add-on during purchase.
Viper remote start is an option if your car didn't come with factory remote start or if you bought a used car without it. Aftermarket systems like Viper are generally less expensive than buying a new car with the feature, but they require professional installation and may not integrate as seamlessly with your car's electronics.
If your car already has factory remote start, you don't need Viper. If you're considering both options, compare the cost of adding Viper ($500 to $1,300 total) against the cost of trading up to a car model that includes factory remote start as standard or bundled with other features you want.
Frequently Asked Questions
Can I install Viper remote start myself?
No. Viper remote start requires wiring into your car's ignition system, starter, and electrical components. This work must be done by a professional technician with the right tools and knowledge of your car's wiring diagram. Improper installation can damage your car's electrical system or create a fire hazard.
Will remote start drain my car battery?
Remote start uses some battery power, but the system is designed to minimize drain. The engine runs for only 10 to 15 minutes before shutting off automatically, which is similar to idling at a stoplight. If you use remote start multiple times daily, you may notice a slight reduction in battery life over months, but it's not significant enough to require a larger battery in most cases.
Does remote start work in cold weather?
Yes, remote start works in cold weather and is actually one of its main benefits — you can warm up your car before getting in. However, extremely cold temperatures (below -20°F) can reduce the range of your key fob remote slightly. The engine itself may take longer to turn over in extreme cold, but the Viper system will still crank it normally.
What happens if I remote start my car but never arrive to drive it?
The engine will run for 10 to 15 minutes, then shut off automatically. Your car's doors remain locked the entire time. The system is designed this way to prevent fuel waste and battery drain if you forget about the remote start command or change your plans.
Can I use Viper remote start if my car has a manual transmission?
Most Viper systems are designed for automatic transmissions. Manual transmission cars can be equipped with remote start, but the installation is more complex because the system must confirm the clutch is fully engaged and the car is in neutral before allowing a start. Ask your installer whether they have experience with manual transmission vehicles and what additional cost or complexity is involved.