Learn How Subaru Remote Start Works

What Is Subaru Remote Start and How Does the Technology Work

Remote start is a feature that lets you turn on your Subaru's engine from a distance, typically using a key fob or smartphone app. Instead of walking up to your vehicle and inserting a key into the ignition, you can fire up the engine while standing in your driveway, at your office, or even from inside a store. The technology operates through wireless communication between your key fob or phone and a receiver module installed in your vehicle.

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The basic mechanics work like this: when you press the remote start button, your key fob or app sends an encrypted signal to a receiver in your Subaru. This receiver confirms that the signal is legitimate (not a random transmission from someone else's device). Once verified, the receiver triggers a series of automated actions—unlocking the doors (on some models), disengaging the parking brake, and starting the engine. The whole process typically takes just a few seconds.

Subaru has offered remote start technology through various methods depending on the model year and trim level. Some vehicles come equipped with factory remote start built into the key fob itself, while other models require a dealer-installed or aftermarket system. The most modern approach involves Subaru's smartphone integration systems, which allow you to start your car through a dedicated mobile app over a cellular connection—meaning you don't even need to be in range of the vehicle's wireless transmitter.

One important distinction: factory remote start systems from Subaru operate differently than aftermarket systems, and compatibility varies significantly across model years. A 2015 Outback with factory remote start, for example, works through a different mechanism than a 2022 Crosstrek with the same feature. Understanding which system your specific vehicle uses matters because it affects how you interact with the feature and what troubleshooting steps might apply if something goes wrong.

Practical takeaway: Check your vehicle's documentation or contact a Subaru dealer to confirm whether your specific model year includes remote start and which type of system it uses—factory key fob, smartphone app, or requires aftermarket installation.

Which Subaru Models and Years Include Remote Start as a Standard or Optional Feature

Subaru has gradually expanded remote start availability over the years, but it's not standard on every model or trim level. The feature tends to appear more commonly on higher trim levels and in more recent model years. For example, certain Outback and Legacy trims have included factory remote start since around 2014, but availability has fluctuated. The Ascent (introduced in 2019) includes remote start on select trims with Subaru's StarLink technology package.

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The Crosstrek line offers remote start on specific trim configurations, typically those that include the StarLink connectivity package or higher equipment levels. The Forester has seen remote start become available in recent years, particularly on models from 2018 onward, though it remains limited to certain trims. The Impreza generally does not include factory remote start as standard or optional equipment, though some owners have added aftermarket systems.

One crucial detail: Subaru's remote start offerings are frequently tied to their connectivity packages and infotainment systems. If you're shopping for a used Subaru or considering a new one, the presence or absence of StarLink or other connected technology packages often determines whether remote start is available on that particular vehicle. A 2020 Outback Limited with StarLink will have smartphone-based remote start, while the same model year in a lower trim without StarLink will not.

Dealers sometimes list remote start as a separate option that can be added at purchase, but the actual availability varies by region and specific vehicle configuration. It's also worth noting that some older Subaru models had remote start available only through aftermarket installation—these factory-installed aftermarket systems are less common than true factory systems and may have different operational characteristics.

Another consideration: availability also depends on transmission type and whether you have an automatic or manual transmission. Most factory Subaru remote start systems work only with automatic transmissions, as a safety measure to prevent unexpected vehicle movement.

Practical takeaway: Before purchasing a used Subaru or shopping for a new model, verify with the dealer or check the vehicle's window sticker and owner's manual to confirm remote start is actually included—don't assume based on model name alone, as trim level and package selection matter significantly.

How to Use Remote Start in Your Subaru—Step-by-Step Instructions for Key Fob and App Methods

If your Subaru came with factory key fob remote start, the process is straightforward. Locate the dedicated remote start button on your key fob—it's typically marked with a curved arrow or similar symbol and is separate from your standard lock and unlock buttons. Press and hold this button for 1 to 3 seconds (exact duration varies by model) until you see your vehicle's lights flash or hear the horn sound. This confirms the command was received. Within moments, your engine should turn on.

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Most Subaru factory key fob remote start systems have a range limit—usually between 300 and 1,000 feet, depending on the model year and local radio frequency conditions. If you're too far away, the fob won't communicate with your vehicle. The system also includes safety shutoffs: if you haven't driven the vehicle and the engine hasn't reached a certain operating temperature within a set timeframe (often 10-15 minutes), the engine will automatically shut down to prevent overheating or fuel waste.

For newer Subaru models using the StarLink app, the process differs slightly. You'll need to download the Subaru StarLink mobile app (available on iOS and Android), create an account, and link it to your vehicle—your dealer can walk you through this setup. Once linked, open the app, navigate to the remote start option, and tap the start button. The app may require you to confirm your identity (fingerprint, PIN, or password) as a security measure. The advantage of app-based remote start is that it works over cellular networks, meaning you can start your vehicle from across town, not just within radio frequency range.

Both methods include important restrictions: your vehicle must not already be running, the fuel tank should have adequate fuel, and the battery must have sufficient charge. With key fob systems, you must be within range. With app-based systems, you need an active internet connection and valid StarLink subscription (some newer Subarus include a trial period). Cold weather affects both systems—some vehicles require the fob to be held for slightly longer, or the app may take a few extra seconds to respond.

If remote start doesn't work, first check whether the parking brake is engaged (a safety feature on many Subarus). Verify that doors are locked and the key isn't in the ignition. For fob-based systems, check if the battery in the fob needs replacing. For app-based systems, confirm your StarLink subscription is active and you have a cellular signal.

Practical takeaway: Locate your specific remote start button or app feature before you need it—practice using it in your driveway first to understand the expected response time and behavior, so you're not caught off guard when you use it in real-world situations.

Safety Features and Automatic Shutoffs Built Into Subaru Remote Start

Subaru engineers built multiple safety mechanisms into remote start systems because starting an unattended engine introduces potential risks. The most fundamental safety feature is the automatic engine shutoff timer. When you remote start your Subaru, the engine runs for a preset duration (typically 10 to 15 minutes depending on the model) before automatically shutting down if no one has started driving the vehicle. This prevents fuel waste and overheating if you forget about a remote-started engine running in your garage or driveway.

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Another critical safety feature involves transmission type. Factory Subaru remote start systems only function on vehicles with automatic transmissions. This is a deliberate design choice because starting a manual transmission vehicle remotely could result in unexpected vehicle movement if the clutch isn't properly disengaged—a serious hazard. If you own a manual Subaru and want remote start, aftermarket systems are available, but they still require certain mechanical conditions to be met.

Parking brake engagement is another integral safety requirement. Most Subaru remote start systems check that the parking brake is engaged before allowing the engine to start. This prevents the vehicle from rolling or moving unexpectedly if remote start is triggered while on a slight incline. Some models also confirm that all doors are properly closed and locked before allowing remote start to function.

Environmental safety considerations are built in as well