Can remote start be added later?

Yes. In most cases you can add remote start after you buy a car, either through a dealer-installed factory option or with an aftermarket kit installed by a professional. The feasibility, cost, and impact on warranties vary by vehicle and market.

Remote start lets you start the engine remotely to warm up or cool down the cabin before you get in. Whether you can add it later depends on your car’s electrical architecture, security system, and whether the automaker offers a factory option or if an aftermarket installer can integrate with the vehicle without compromising safety features. This guide explains how to determine compatibility, your available pathways, and practical considerations.

Paths to add remote start

There are two general routes to adding remote start: a dealership-assisted, factory-backed option, or an aftermarket kit installed by a shop. Each path has trade-offs in terms of compatibility, warranty protection, and cost.

• Factory-installed remote start (OEM option) added by a dealer: This route uses the car maker’s system and is designed to integrate with the vehicle’s immobilizer and safety features. Availability may depend on trim level or model and often involves dealer installation and potential subscription costs for connected services.


• Aftermarket remote start kits: These are third-party systems sold to consumers or by installers. They range from universal kits to vehicle-specific CAN-bus modules. Installation quality varies, and professional installation is strongly recommended to avoid conflicts with airbags, alarms, or other electronics.

Choosing between OEM and aftermarket comes down to vehicle compatibility, the features you want (such as app control), budget, and how important warranty protection is to you.

Factory-installed remote start: What to know

Pros include smoother integration with the car’s security system, potential warranty alignment for the installation, and generally reliable performance. Cons often involve higher upfront costs and limited availability on some models or trims, plus possibly required subscriptions for connected features.

Cons include less flexibility in feature sets and longer waits for dealer scheduling. If you value a seamless experience and dealer support, OEM options are typically the safer bet.

Aftermarket remote start: What to know

Pros include lower upfront cost and broader model compatibility, including older vehicles. Many kits are widely available and can be tailored to specific needs, such as compatibility with smartphone apps or remote fobs.

Cons include potential warranty implications if the installation affects other systems, the need for precise installation to avoid safety or reliability issues, and the possibility that some features may not function exactly as with factory-installed options.

How to verify compatibility and plan installation

To determine whether you can add remote start and how best to proceed, follow these steps and document your findings before committing to work.

• Identify your vehicle’s year, make, model, engine, and current ignition system (is it push-button start, does it have an immobilizer, etc.).


• Check with the dealership or manufacturer portal to see if a factory remote-start option is available for your exact configuration.


• If considering aftermarket, confirm compatibility with your vehicle’s security features, airbags, and on-board computer systems; ask for a written compatibility note from the installer.


• Request detailed quotes that include the part, labor, potential programming of keys/fobs, and any ongoing service or app-subscription fees.


• Schedule installation with a qualified technician and arrange a post-installation test to verify operation, safety systems, and user-app integration.

Because improper installation can affect safety systems, always use a trained technician and obtain a written warranty for the work and parts.

Costs, timelines, and typical wait times

Costs vary widely based on the chosen path and vehicle complexity. Here is a rough budgeting guide.

• Factory OEM remote start: Parts and dealer installation often range from several hundred to around $1,000+ in many markets, with potential monthly fees for connected services.


• Aftermarket remote start: Basic kits can be $50–$300, with professional installation typically $100–$500 depending on the vehicle and the installer’s rates; app compatibility may require a subscription.


• Installation timelines: Aftermarket installs commonly take 1–4 hours; dealer/OEM installs may require scheduling and could take longer, especially if a car must be brought in for a day.

Expect variability by region and dealer or shop policy. Always confirm the schedule and any downtime you should anticipate when planning around a new feature.

Warranty and consumer protection considerations

Warranty impact

Most manufacturers state that aftermarket parts won’t void your entire vehicle warranty unless the aftermarket component or its installation causes a problem. However, if the remote-start system interferes with other safety or electrical systems, warranty coverage for those systems could be affected. It’s essential to confirm the installer’s warranties and to get documentation from the dealer about any impact on your vehicle’s warranty.

Insurance and liability

Some insurers may require disclosure of added remote-start hardware and could adjust premiums or coverage terms. Improper installation that affects safety features could also raise liability concerns in the event of an incident. Check with your insurer before proceeding.

Legal and safety considerations

Local regulations regarding engine idling and remote operation may apply in some jurisdictions. Ensure the system is installed and used in a way that complies with regional rules and safety standards, particularly in areas with strict anti-idling or emissions rules.

Bottom line and next steps

In most cases, adding remote start later is feasible, but the best path depends on your vehicle, budget, and priorities. OEM dealer-installed options tend to deliver the most seamless integration and warranty clarity, while aftermarket kits offer flexibility and cost savings—for a price in potential warranty or safety trade-offs. Approach the decision with a clear plan, verified compatibility, and professional installation.

Summary

Remote start can usually be added after purchase through either factory-installed options or aftermarket solutions. Start by verifying your vehicle’s compatibility with an OEM option through the dealer, or consult a qualified installer for an aftermarket kit. Compare costs, potential subscription fees for connected services, warranty implications, and installation timelines. With careful planning and professional installation, you can enjoy the convenience of remote start without compromising safety or reliability.

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

If your car doesn't have this feature already, an aftermarket remote start system can usually be installed. In some cases, a dealer can install or activate an OEM system too. Aftermarket options often offer more features, such as longer range and smartphone connectivity – although many OEM systems have apps also.

Can you add remote start to an existing key fob?

Yes, you can start your car with a key fob, either using a factory-installed remote start or by pushing the start button if it's a push-to-start model. For a remote start feature, you'll typically need to press the lock button on the fob and then the start button, while the push-to-start systems require the fob to be inside the vehicle to be present for the start button to work. 
This video demonstrates how to start a car remotely using the key fob: 49sHondaYouTube · Jul 29, 2022
Using a remote start feature

• Check your fob: Look for a circular arrow icon, often with an "x2" or "⟳" symbol, on your key fob. 
• Press the sequence: To activate the engine, press the lock button on your fob, and then press and hold the remote start button (the one with the circular arrow icon). 
• Note the limits: Remote start systems typically have a limited range and will cause the engine to shut off after a set amount of time, often 10 minutes, unless you repeat the process. 

This video demonstrates how to use a key fob to start a car in different scenarios: 27sTECH GeniusYouTube · Jan 25, 2023
Using a push-to-start ignition

• Keep the fob inside: The key fob must be inside the vehicle to start the engine. 
• Press the start button: With the fob inside, simply press the brake pedal and then push the engine start/stop button. 

This video shows how to start a push-to-start car, even with a dead fob battery: 59sAlex PrestigiacomoYouTube · Nov 13, 2025
What if the key fob battery is dead?

• For push-to-start vehicles: Many push-to-start systems have a backup method for when the fob battery is low or dead. 
• Follow your manual: Check your owner's manual for the specific procedure, but it often involves placing the fob directly against the start button or in a designated "transmitter pocket" area inside the car, and then pushing the start button while the brake is pressed. 

This video explains what to do if your key fob battery is dead: 50sStan CravensYouTube · Feb 19, 2025

Can I get remote start added to my car?

Yes, you can get remote start added to your car by either a factory-installed option if your model supports it, or more commonly, through an aftermarket system. For the best results and to avoid potential issues, professional installation from a dealer or a reputable automotive electronics shop is recommended. 
Options for adding remote start

• Factory-installed system: Some newer cars have a remote start system that can be activated or installed by a dealer. 
• Aftermarket system: These are available for most vehicles, often with more features like longer range or smartphone control. 
• DIY kits: Some "plug-and-play" kits are available that claim to be easy to install with no wire splicing, but these still require computer programming and should be done with caution and only if you have significant electrical experience. 

Things to consider

• Vehicle compatibility: Not all vehicles are compatible with remote start. It's best to check with a professional installer to confirm compatibility for your specific car model and year. 
• Installation: Professional installation is generally recommended, especially for newer vehicles with complex electronics, to ensure the system is installed correctly and safely. 
• Manual transmission: Adding remote start to a manual transmission vehicle is possible but is generally not recommended due to safety concerns. These systems need to be installed with specific safety features to prevent the car from starting while in gear. 
• Smartphone control: Many aftermarket systems can be controlled via a smartphone app, but this feature is not universal and is not available on all factory systems. 
• Warranty: Installing a remote start system will not void your new car's warranty, as long as it's installed by a professional or dealer. 

Where to get it done

• Car dealerships: Can often install or activate factory-recommended systems. 
• National chains: Stores like Best Buy often offer installation services. 
• Local specialty shops: Reputable local shops that specialize in car electronics or alarms can also perform the installation. 

Can factory remote start be installed later?

Remote start is a whole system that needs to be installed properly to work well. That's why we don't advise adding remote start to your car yourself. The job is best left to the professionals who know how to add remote start to a car properly.