Can you add remote start to existing car?

Yes. In most cases you can add remote start to an existing car, through factory-like options offered by some manufacturers, dealer-installed upgrades, or aftermarket remote start systems. The installation complexity and price vary depending on your vehicle and chosen approach.

As winter approaches or for everyday convenience, many drivers weigh the options for adding remote start. This article explains how remote start works, the routes you can take to add it to a car you already own, and the practical considerations to keep in mind before you install.

Understanding remote start: how it works and what it costs

There are several routes to add remote start to an existing car, each with different levels of integration, cost, and potential impact on warranties.

• Factory-installed remote start (via dealer or as part of a newer model or official upgrade). This option is typically the most seamless, with built-in integration to the vehicle’s electronics and security system.


• OEM upgrade kits or dealer-installed options that integrate with your existing key fob or a newly provided remote. These are designed to be compatible with your car’s immobilizer and systems.


• Aftermarket remote start systems (standalone or vehicle-specific) installed by a professional shop. These kits can offer 1- or 2-way remotes and often include immobilizer bypass modules and safety features.


• Smartphone-based remote start apps that work with aftermarket modules. These systems provide remote control via a phone app and may require a subscription or cloud service.

Costs vary widely: aftermarket installations typically run from roughly $150 to $600 for parts and labor, depending on the vehicle, the system’s features, and whether a dealer or independent shop performs the work. More integrated or dealer-backed options can be pricier, but they may offer stronger compatibility and smoother operation with your car’s existing security features.

Practical considerations before you install

Before you commit to adding remote start, assess how it fits with your car, your budget, and local regulations.

• Vehicle compatibility and transmission type: Most remote start systems favor automatic transmissions. Manual-transmission cars can be harder to support due to safety concerns, and some systems require additional hardware to prevent starting while the car is in gear.


• Security and immobilizer compatibility: Ensure the system works with your car’s immobilizer and alarm without compromising security. Some vehicles require a bypass module, and improper installation can trigger false alarms or disable the engine.


• Warranty implications: Aftermarket installations can affect factory warranties. Check with your dealer or read the terms of your warranty before proceeding.


• Installation cost and complexity: Labor time can vary. A professional installation is recommended to properly integrate with the CAN bus, wiring harnesses, and safety systems.


• Safety, climate control, and carbon monoxide risk: Remote start can pose risks if used in enclosed spaces or without adequate ventilation. Many systems include safety features to prevent starting if doors are open or if the hood is raised; always follow manufacturer guidelines.


• Legal considerations: Some jurisdictions regulate or restrict remote starting, especially in shared or public spaces. Verify local laws and any homeowner association rules that may apply.

In most cases, adding remote start is feasible with careful planning. The best path depends on your car’s make/model, your priorities (ease of use, integration quality, cost), and whether you prefer a dealer-supported solution or a third-party system.

Questions to ask a installer

Before scheduling work, pose these questions to a shop to ensure you get a solution that matches your needs.

• Is the system compatible with my car’s immobilizer and factory alarm?


• Will installation affect my existing warranty or require inspections?


• What safety features are included (e.g., anti-start in gear, hood safety, door status checks)?


• What is the total cost, including parts, labor, and potential remote-control options?


• How long will installation take, and what testing will be performed before delivery?


• Is there a smartphone app option, and is there a subscription or cloud service involved?

After weighing options and talking to an installer, most drivers can pursue a solution that aligns with their vehicle and lifestyle.

Summary

Adding remote start to an existing car is generally possible through factory options, OEM upgrades, or aftermarket systems. The right choice depends on your vehicle, your budget, whether you prioritize seamless integration or flexibility, and your tolerance for potential warranty and legal considerations. A professional installation is typically recommended to ensure safety, reliability, and proper integration with your car’s security features. Always verify compatibility with your transmission type, immobilizer, and local regulations before proceeding.

Is it hard to add remote start to your car?

Installing a remote start can be challenging for those with little electrical or car wiring experience, as it often requires modifying the vehicle's electrical system. However, it can be manageable with vehicle-specific wiring harnesses and modules that simplify the process, or even be "plug-and-play" for some systems. For most people, professional installation is the recommended option to avoid potential damage to the car's electrical system. 
Factors that make installation difficult

• Complex wiring: Modern cars have intricate electrical systems, and incorrect wiring can lead to damage. 
• Vehicle-specific systems: The complexity varies by car. Models with keyless ignition or push-to-start systems require different components and procedures than those with traditional keys. 
• Immobilizer systems: Vehicles with chip keys require extra steps, like using an immobilizer bypass module or leaving a key in the starter module box. 

This video explains how to install a remote start in a car with a key fob: 56sAuto SensationYouTube · Feb 8, 2023
How to make installation easier

• Use plug-and-play kits: These systems are designed for specific vehicles and use harnesses that connect without splicing wires, often plugging into ports like the OBD2. 
• Use vehicle-specific parts: Kits that include a data integration module and a vehicle-specific wiring harness are easier to install because they act as a language translator for the car's computer and reduce the amount of rewiring needed. 
• Utilize online resources: Websites like Crutchfield have vehicle selectors that automatically recommend the correct parts and provide instructions. 

You can watch this video to learn how to install a remote starter system on a specific car model: 58sDakota Nation RacingYouTube · Sep 15, 2025
When to choose professional installation

• If you are not comfortable with electrical work: A professional installer has the experience to handle complex wiring and avoid damage. 
• To save time and avoid frustration: A professional can typically install a remote start in 2–5 hours, while an untrained person may take much longer. 
• To ensure proper functionality: Professional installers can add other features like keyless entry or trunk pops, and ensure all the components are working correctly. 

Can you add remote start to a car that doesn't have it?

Yes, you can add remote start to a car that doesn't have it, using either an aftermarket kit or a system from the dealer. Aftermarket options often offer more features like longer range or smartphone connectivity, while a dealer-installed OEM system may be another option, especially for newer cars. For DIY installation, choose a "plug-and-play" kit for simpler installation, or have a professional install it to ensure proper electrical connections and wiring.
 
Aftermarket installation

• DIY: You can purchase and install a "plug-and-play" kit for a simpler installation that doesn't require splicing wires. 
• Professional: A professional installer can handle a more complex setup, which may be necessary for certain vehicles or to ensure all electrical connections are made correctly. 
• Features: Aftermarket kits often come with features like longer range, 2-way communication (to confirm the car started), and smartphone integration. 

This video demonstrates how to install a remote car starter yourself: 1mDaniel EnglingYouTube · Dec 31, 2020
Dealer installation

• For newer cars: Many modern cars have a factory remote start system that can be activated or installed by a dealer. 
• OEM system: This will integrate with your car's existing systems, though the range may be limited compared to aftermarket options. 

Things to consider

• Vehicle compatibility: Remote start is available for most vehicles with automatic transmissions. Remote start for manual transmission vehicles is also available, but it may require a specialized kit. 
• Push-to-start: Adding remote start to a push-to-start vehicle is more complex than a key ignition system, so professional installation is recommended. 
• Cost: Prices vary depending on the type of system and installation complexity. Aftermarket kits can range from about $100$ 100$100 to $500$ 500$500 for the parts, with professional installation taking an additional few hours. 

How much does it cost to put a remote start in a vehicle?

The cost to have a remote start professionally installed in a vehicle typically ranges from $150 to over $500, but this can vary depending on the vehicle, the type of system, and additional parts like bypass modules. The kit itself can range from about $50 for basic systems to $200 or more for advanced ones, while installation labor is often $75 to $200 or more depending on complexity. Factors like luxury features, keyless entry, and manual transmissions can increase the price. 
Cost breakdown and factors

• Kit cost: Prices for the remote start kit alone can range from around $50 for a basic system to over $200 for an advanced system with features like smartphone control. 
• Installation labor: Labor costs typically range from $75 to $200 or more, depending on how complex the installation is for your specific vehicle. 
• Bypass modules: Many modern vehicles require an additional bypass module to integrate with the factory security system, which can add $50 to $200 or more to the total cost. 
• Vehicle complexity: Luxury and high-end vehicles, or those with push-button starts, often have more complex electrical systems that require more advanced and costly bypass modules and labor. 
• Additional features: Systems that offer extended range, keyless entry, or trunk-pop functionality will cost more than basic models. 

Installation options

• Professional Installation: This is the recommended option, especially for modern vehicles, to ensure proper installation, avoid damage to the electrical system, and maintain your vehicle's warranty. Professional installation costs vary but often fall within the $150-$500 range, as mentioned above. 
• DIY Installation: While it is possible to install a system yourself to save on labor costs, it is not recommended unless you are very experienced. The process can be complex and may require additional parts like bypass modules. If done incorrectly, it can damage your vehicle's electrical system. 

Is it safe to add remote start to car?

When installed properly and used responsibly, remote start systems are generally safe for cars. This article will examine common remote starter myths versus the facts, outline key benefits, provide guidance on proper installation and use, and overview what Compustar remote start systems have to offer.