Remote start systems let you start your engine from outside the vehicle using a key fob or smartphone app, but the method and cost depend on your car's age, make, and whether the factory already supports it

If your car came with remote start from the factory, you typically just need to program the fob or read the manufacturer's app. If it didn't, you have three main routes: buy an aftermarket remote start system and have a shop install it, use a dealer-installed upgrade if your manufacturer offers one, or check whether your car's existing security system can be reprogrammed to add the feature. The cost ranges from under $200 for a basic aftermarket unit to $500 or more for professional installation, or $300 to $800 if you go through a dealer.

The choice between these routes depends on your comfort level with installation, your budget, and what features matter to you. A professional installation protects your warranty and electrical system. A dealer upgrade ensures compatibility but costs more. An aftermarket system gives you options but requires finding a reputable installer.

Key Takeaways

  • Factory remote start requires only fob programming or app setup; aftermarket systems require professional installation to avoid electrical damage.
  • Aftermarket remote start typically costs $150 to $400 for the unit plus $100 to $300 for installation, depending on your vehicle's complexity.
  • Dealer-installed remote start costs more but preserves your warranty and guarantees compatibility with your specific car model.
  • Professional installation protects your car's electrical system and usually includes a warranty on both parts and labor.
  • Smartphone-based remote start requires your car to have cellular connectivity or a compatible aftermarket module; older vehicles may not support it.

Check whether your car already has remote start capability

Many newer vehicles come with remote start built in, but the feature may not be activated. Check your owner's manual or your car's infotainment system settings to see if remote start is listed as an available function. If it is, you may only need to program your key fob or read your manufacturer's mobile app—both are usually free.

For vehicles made in the last five to ten years, contact your car's manufacturer directly or visit the dealer's website to confirm what remote start options exist for your specific year, make, and model. Some manufacturers offer remote start only on certain trim levels or as part of a subscription service. Others allow you to add it through a dealer retrofit without replacing the entire security system.

Aftermarket remote start systems and installation costs

An aftermarket remote start system is a separate device you install in your car's electrical system, usually under the dashboard or behind the steering column. Common brands include Viper, Compustar, and Avital. These systems range from $150 to $400 depending on features—basic models offer straightforward push-button start, while advanced ones include smartphone control, GPS tracking, and integration with your car's climate system.

Professional installation typically costs $100 to $300, though some shops charge flat rates and others charge hourly labor. The total installed cost for a mid-range aftermarket system usually falls between $300 and $600. Installation complexity varies: cars with modern security systems or push-button ignition require more wiring work than older vehicles with traditional keys. Always get a written quote before work begins, and ask whether the shop warrants both the parts and the installation labor.

Choosing a reputable installer matters. Poor installation can damage your car's electrical system, drain your battery, or trigger warning lights. Look for shops certified by the installer brand, check reviews on Google or Yelp, and confirm they carry liability insurance. Many car audio shops and some dealerships offer remote start installation.

Dealer-installed remote start and subscription services

Many manufacturers offer remote start as a dealer-installed option, which costs more than aftermarket but integrates seamlessly with your car's factory systems. Dealer installation typically runs $300 to $800 depending on the brand and whether it includes smartphone connectivity. The advantage is that a dealer retrofit is covered under your vehicle warranty and uses parts designed specifically for your car.

Some manufacturers bundle remote start with subscription services. General Motors' OnStar, BMW's ConnectedDrive, and Ford's FordPass all offer remote start through their apps, though they may require a paid subscription after a trial period. Subscription costs vary—typically $10 to $25 per month—but they also include roadside information, vehicle diagnostics, and other features. If you own your car long-term, the subscription cost adds up, so factor that into your decision.

Smartphone-based remote start and connectivity requirements

Smartphone remote start requires your car to have cellular connectivity, either built-in or added through an aftermarket module. Factory systems on newer vehicles often include this connectivity as standard. Aftermarket systems that offer smartphone control require a separate cellular module, which adds $100 to $200 to the total cost and may require a separate monthly subscription to the installer's service.

Before choosing a smartphone-based system, confirm that your car's location and your phone's coverage will support reliable connectivity. Remote start over cellular is less responsive than a key fob—there can be a delay of several seconds—so some drivers prefer a physical fob as a backup. Check the aftermarket installer's app reviews to see whether users report reliability issues in your area.

What to expect during installation and after

A professional remote start installation typically takes two to four hours. The installer will run wiring through your dashboard and steering column, connect to your car's ignition and battery systems, and program the fob or app. During installation, your car's battery should remain connected to avoid losing stored settings in your infotainment system.

After installation, test the system in your driveway before leaving the shop. Confirm that the engine starts reliably, that the fob range meets expectations, and that your car's security system arms and disarms correctly. Ask the installer for a written warranty—most reputable shops offer at least one year on parts and labor. If warning lights appear on your dashboard after installation, return to the shop when ready; this usually indicates a wiring error that needs correction.

Keep your installation receipt and warranty documentation. If you sell the car, some buyers view aftermarket remote start as a selling point, while others prefer factory systems. A professional installation with documentation is easier to transfer than a DIY job.

DIY installation versus professional installation

Installing remote start yourself is possible if you have electrical knowledge and the right tools, but it carries real risks. Incorrect wiring can damage your car's electrical system, trigger airbag sensors, or void your warranty. If something goes wrong, you may face a costly repair bill at a dealership.

Most car manufacturers and insurance companies recommend professional installation for this reason. The labor cost is worth the protection: a professional installer carries liability insurance, warrants their work, and knows how to avoid common mistakes specific to your car model. If you are confident in your skills and have experience with car electrical systems, some aftermarket kits include detailed instructions and online support communities. But for most drivers, professional installation is the safer choice.

Frequently Asked Questions

Will remote start drain my car's battery?

A properly installed remote start system draws minimal power when the car is off. Most systems use less than 1 amp in standby mode, which is comparable to a car alarm or security system. If your battery is already weak, remote start may make the problem noticeable sooner, but it does not cause battery drain on its own. If your car sits unused for weeks, disconnect the negative battery terminal to prevent any standby drain.

Can I add remote start to a car with a manual transmission?

Most aftermarket remote start systems cannot be installed on manual transmission vehicles because the engine could start while the car is in gear, creating a safety hazard. Some high-end aftermarket systems include a safety bypass that prevents starting unless the clutch pedal is pressed, but these are expensive and not widely available. Check with your installer whether your specific car and system combination supports manual transmission safety features.

Does remote start work if my car is locked?

Yes. Remote start is designed to work on a locked vehicle—that is the whole point. The engine starts but the doors remain locked until you unlock them with your key fob or phone. This is a safety feature that prevents someone from entering your car while it is running unattended.

Will adding remote start void my car's warranty?

A dealer-installed remote start will not void your warranty because it is an official manufacturer product. An aftermarket system may void your warranty if the installation causes damage to a covered component, but the remote start itself is not automatically a warranty violation. Check your warranty documentation or ask your dealer whether aftermarket remote start is permitted. Some dealers are more lenient than others.

What is the difference between a key fob remote start and a smartphone app?

A key fob remote start works within a range of 500 feet to 1 mile depending on the system, requires no subscription, and works when ready. A smartphone app works from anywhere with cellular coverage but has a slight delay, may require a monthly subscription, and depends on your phone's battery and internet connection. Most drivers prefer a key fob for reliability, but smartphone apps are useful if you want to warm up your car from inside your house or office.