How do I know if my key fob has remote start?

Yes—often your key fob will have a dedicated remote-start button or you can start it via an associated app; however, not every vehicle or trim includes this feature.

This article explains how to verify whether your key fob supports remote start, what variations you may encounter by car maker, and safe steps to test or confirm, including the differences between factory-installed systems and aftermarket options.

Quick indicators that your key fob has remote start

Here are the typical indicators that your key fob includes remote start and what to look for on the fob or in your vehicle’s documentation.

• A dedicated remote-start button on the key fob, often marked with a circular arrow around a car or the word START.


• The ability to start the engine via a smartphone app linked to the car (common with newer models).


• A specific button sequence on the fob or a setting in the car’s menu required to activate remote start (defined by the manufacturer).


• Sometimes the lock button is used in combination (for example, press and hold the lock button for several seconds) to initiate remote start; the exact method varies by make and model.


• Factory installed vs aftermarket: factory-equipped remotes are usually described in the owner’s manual; aftermarket systems may or may not integrate with the existing fob.

If none of these indicators are present, your vehicle may not support remote start from the fob or may require an aftermarket system installed by a dealer or installer.

How to test remote start safely

To confirm in a safe, controlled way, follow the built-in instructions in your vehicle’s manual and use a clear, outdoor space with ventilation. Do not test in a closed garage or an area with poor air circulation.

1. Ensure the car is stationary, parked in a safe, open area, and that you are following the vehicle’s safety precautions for remote start (such as doors locked and gear in park, if applicable).


2. Close and lock the doors (if your system requires it) and prepare to initiate remote start using the correct method for your car — this could be pressing and holding a button on the key fob for several seconds, or using a smartphone app.


3. Initiate the remote start as defined by your vehicle’s manufacturer. Listen for the engine and observe that climate controls may activate; some cars allow the engine to run for a limited time before needing the ignition to be engaged or the vehicle to be driven.


4. Wait for the engine to start, then confirm that the engine is running and the vehicle remains in a safe state (e.g., a valid safety interlock may prevent driving while the car is not yet ready).


5. To stop remote start, press the stop/ignition command on the fob or app, or press the brake pedal and press the start/stop button as instructed by the manual.

If you cannot get the remote start to work after following the manual’s steps, check that the system is enabled in the vehicle settings, and verify whether the feature is available on your trim. If in doubt, contact the dealership or an authorized installer to verify compatibility and safety settings.

Factory-installed vs aftermarket remote start

Remote start features can be factory-installed by the vehicle’s manufacturer or added post-purchase as an aftermarket system. The availability, compatibility with the key fob, and the method to activate remote start can differ between the two. App-based remote start, when offered, often depends on a connected services plan or subscription with the manufacturer.

Factory-installed remote start

Factory-installed remote start is typically integrated with the original key fob and may be included on higher trims; it often uses built-in sequences approved by the manufacturer and may be covered under the vehicle’s warranty. Check your owner’s manual or contact the dealer to confirm feature availability for your model and trim. If an app is involved, it may require a paid connected services plan.

Aftermarket remote start

Aftermarket systems can add remote start functionality to vehicles that did not come with it from the factory or enhance existing capability. These installations can affect warranty, programming with the existing key fob, and may require professional installation to ensure safety features (like doors and brake interlock) function correctly.

What to do if you’re unsure

If you’re unsure whether your key fob supports remote start, check the owner’s manual, contact the dealer, or visit an authorized service center. You can also bring your fob to a dealership to have it inspected for the remote-start capability and safety features.

Summary

Remote start capability on a key fob is common in many modern vehicles, but not universal. Look for a dedicated button or app option, consult the manual, and test only in safe, ventilated areas. Whether factory-installed or aftermarket, understanding how your system works and following the manufacturer’s safety guidelines is essential to keep you and your vehicle secure.

How do you know if your key fob has remote start?

Inspect key fob for a circular-arrow/start icon. Search your owner's manual for ``remote start.'' Try the lock + start-button sequence outside in Park. Look for dealer/installer stickers or a second aftermarket remote. Use VIN/build-sheet lookup or ask a dealer to confirm.

How do I activate remote start on my key fob?

Times. Once started remotely the engine will run for 10 minutes and then shut. Off. You can extend the running time for another 10 minutes by repeating the start procedure during the initial. Period.

Can my key fob remote start my car?

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

What is the lock button 3 times remote start?

3X Lock Remote Start
For many vehicles, just press lock 3 times on your existing factory key fob to start your vehicle, no extra remote needed. If your vehicle is not compatible with 3x Lock or you require extra long-range, you can purchase a long-range remote at highly discounted rates.