How To Remote Start A Subaru Outback: Key Fob And App Methods

To remote start a Subaru Outback, you must use either the MySubaru smartphone application powered by Starlink Telematics or a physical key fob sequence. The smartphone app relies on an active Starlink Safety and Security subscription to send cellular ignition signals, while the physical key fob requires a specific lock-button cadence to trigger the engine within a close radio-frequency range. Both systems run the engine for up to ten minutes per cycle to safely climatize the cabin.

Compatibility and System Verification Checklist

Before attempting to remote start your Subaru Outback, you must identify which remote start hardware or software system is active on your vehicle. Subaru utilizes two distinct infrastructures: the cloud-based MySubaru Telematics system (available on 2015 and newer models equipped with Keyless Access and Push-Button Start) and the local Radio Frequency (RF) hardware-based system, which uses either your standard key fob or a dedicated accessory long-range remote transmitter.

If your Outback is a Base trim level with a physical turn-key ignition, the MySubaru app-based remote start is unavailable. For these models, or for owners who prefer not to pay an annual telematics subscription, a dealer-installed or aftermarket physical remote start module is required.

• Essential Equipment & Requirements:
  
  
  • Compatible Vehicle: Subaru Outback (Generation 5 or Generation 6, typically 2015–Present).
  • MySubaru Account: Registered account linked to your vehicle's Vehicle Identification Number (VIN).
  • Active Subscription: Subaru Starlink Safety Plus & Security Plus package (required for app-based starting).
  • Smartphone: iOS or Android device running the latest version of the MySubaru application.
  • Physical Fob: Standard Subaru Smart Key Fob (FCC ID: HYQ14AHK or equivalent) or the optional OEM Long-Range Remote Start Fob (transmits at 915 MHz).
• Mandatory Prerequisite Safety Standards:
  
  
  • The vehicle's hood, rear liftgate, and all passenger doors must be completely closed and latched.
  • The transmission shift selector must be locked in Park (P).
  • The physical electronic parking brake (EPB) does not need to be engaged, but the vehicle's diagnostic system must register zero active engine fault codes (Check Engine Light must be off).
  • The vehicle must have adequate fuel (typically above 1/4 tank) to prevent system lockout.
• Estimated Budget & Duration Benchmarks:
  
  
  • MySubaru Starlink Subscription Cost: Approximately $99 to $150 annually (often discounted during new vehicle purchase or lease initiation).
  • Physical OEM Remote Start Kit Installation: $450 to $650 (includes parts and dealership labor to flash the Body Integrated Unit).
  • Execution Time: 5 seconds via key fob; 10 to 15 seconds via app connection latency.

Step-by-Step Subaru Remote Start Execution

Method 1: Using the MySubaru Mobile Application (Cellular Telematics)

The MySubaru application offers the most comprehensive remote-start functionality. It bypasses line-of-sight limitations by sending an encrypted cellular command through the Subaru Starlink Data Communication Module (DCM) installed in your vehicle's dashboard.

1. Launch and Authenticate: Open the MySubaru application on your smartphone. Authenticate using your biometric login (Face ID/Touch ID) or your established account password.
2. Access Climate Control Settings: Locate the "Remote Engine Start" button on the primary dashboard screen. Do not tap it quickly; instead, tap the settings gear icon adjacent to it if you wish to adjust the interior environment.
3. Configure Presets: Select your desired cabin temperature (ranging from 60°F to 85°F), set the fan speed, toggle on the front and rear defrosters, and activate heated seats or ventilated seats if your Outback is equipped with these options.
4. Send the Ignition Command: Tap the blue "Start Engine" button. The app will prompt you to enter your pre-configured 4-digit MySubaru Security PIN.
5. Monitor Confirmation: Once the PIN is verified, the application will display a loading wheel as it sends the request to the Starlink server, which then routes it to your vehicle's cellular receiver. Within 10 to 15 seconds, the app will display "Engine Started Successfully," and your Outback's parking lights will illuminate to confirm the engine is running.

Pro-Tip: If your vehicle is parked in an underground garage, concrete structure, or remote rural area with poor cellular coverage, the telematics system may fail to receive the signal. In these environments, rely on the physical key fob method.

Method 2: Using the Standard Smart Key Fob (Radio Frequency)

If your Outback is equipped with the factory remote engine start software accessory, you can initiate the start sequence using your factory-issued smart key fob. This method operates on a local radio frequency and requires you to be within approximately 30 to 75 feet of the vehicle.

1. Position Yourself Within Range: Stand within clear visual range of the vehicle. Avoid metal barriers or high-voltage lines that can interfere with the fob's 315 MHz or 433 MHz transmission signal.
2. Execute the Lock Cadence: Press the "Lock" button (the Subaru logo) on the key fob once. The hazard lights will flash once.
3. Repeat the Lock Press: Within 2 seconds of the first press, press the "Lock" button a second time. The hazard lights will flash a second time.
4. Initiate the Hold Phase: Within 2 seconds of the second press, press and hold the "Lock" button down. Keep the button depressed for a full 3 seconds.
5. Observe the Startup Indicators: Release the button when you hear the horn chirp once and see the hazard lights flash three times. The engine will crank and start immediately, and the side marker lights will remain illuminated while the engine runs.

Warning: Do not rush the button presses. If you press the lock button too quickly or wait longer than 2 seconds between presses, the vehicle's Body Integrated Unit (BIU) will interpret the command as a standard door-lock sequence and will reset the remote start counter.

Method 3: Using the Dedicated OEM Long-Range Key Fob Accessory

Subaru offers an optional, dealer-installed long-range remote engine start kit. This kit includes a separate, smaller single-button transmitter that extends your operational range up to approximately 400 feet.

1. Verify Transmitter Status: Ensure the small fob battery is active by checking the integrated LED indicator light on the transmitter casing.
2. Trigger the Command Sequence: Press the single start button on the transmitter twice within a 2-second window.
3. Confirm the Return Signal: The transmitter will beep once and the LED on the key fob will flash green, indicating that the signal has been received and executed by the vehicle's internal transceiver module.
4. Automatic Shut-off Monitoring: The dedicated key fob system will automatically shut down the engine after 15 minutes of run time if you do not enter the vehicle.

Subaru Remote Start System Specifications and Range Comparison

Resolving Subaru Remote Start Failures and Warning Signals

When your Subaru Outback fails to respond to a remote start command, the vehicle's onboard diagnostic computer is blocking the ignition sequence as a safety or mechanical protection measure. Understanding the root causes of these failures will save you unnecessary diagnostic fees.

Scenario 1: The engine cranks for a brief moment but shuts down within 5 seconds

• Root Cause: The vehicle's fuel level is critically low (typically when the low fuel warning light is illuminated on the instrument cluster), or the vehicle's diagnostic system detected a pending engine diagnostic trouble code (DTC) immediately after startup.
• Actionable Fix: Refuel the Outback so that it has at least one-quarter tank of fuel. Connect an OBD-II scanner to the diagnostic port beneath the steering column to read and clear any active check engine light codes. The vehicle will not allow remote start functions while a powertrain code is active.

Scenario 2: The key fob sequence causes the horn to honk twice, but the engine does not crank

• Root Cause: The vehicle's hood switch, rear liftgate latch, or one of the door lock sensors is open, damaged, or misaligned. The vehicle interprets this as an unsecured cabin or engine bay and blocks ignition to protect technicians or passengers.
• Actionable Fix: Walk around the vehicle and physically open and firmly re-close all four passenger doors, the rear trunk hatch, and the front hood. Check the rubber hood bumper switch located near the driver-side fender inside the engine bay; if it is worn or bent, adjust it to ensure the closed hood depresses the switch completely.

Scenario 3: The MySubaru app displays a "Command Failed: Vehicle is Asleep" or telematics communication timeout error

• Root Cause: The Outback has been parked and left undisturbed for more than 7 consecutive days. To prevent the 12-volt accessory battery from draining, the vehicle's Data Communication Module (DCM) enters a deep power-saving "sleep" mode and shuts off its cellular receiver.
• Actionable Fix: Manually start the vehicle using the push-button start inside the cabin. Let the engine run for at least 5 minutes to wake up the telematics module and allow the alternator to replenish the 12V battery. Once cycled, the cellular transceiver will remain active for another week.

Scenario 4: The system refuses to remote start after two consecutive successful starts

• Root Cause: Subaru's safety protocol limits remote starting to two consecutive cycles. Once you have run the engine remotely for two full cycles (20 minutes total) without physically turning the vehicle on with the key inside the cabin, the system locks out further remote commands to prevent carbon monoxide buildup or starter wear.
• Actionable Fix: Enter the vehicle with the key fob on your person, press the brake pedal, and press the physical Engine Start/Stop button to turn the car on. Shift the vehicle out of Park and back in, then turn the car off. This resets the safety counter, allowing you to remote start the vehicle again.

Frequently Asked Questions

Can you remote start a manual transmission Subaru Outback?

No, Subaru does not offer a factory OEM remote start solution for manual transmission vehicles due to severe safety risks. Aftermarket systems can be installed but require complex safety bypass modules that confirm the gear selector is physically in neutral and the emergency brake is fully engaged before starting.

Why does the engine shut off when I open the driver's door?

This is a built-in anti-theft and safety feature programmed by Subaru for all push-button start vehicles. When a door is opened during a remote start run cycle, the vehicle shuts down to prevent unauthorized individuals from driving the car away. You must restart the engine manually once you are seated inside the cabin.

How do I extend the remote start run time on my MySubaru app?

You can extend the run time by sending a second remote start command through the app while the engine is still running during its first 10-minute cycle. This adds another 10 minutes to the countdown timer, up to a hard system limit of 20 total minutes.

Does using an aftermarket remote start system void my Subaru factory warranty?

Under the Magnuson-Moss Warranty Act, installing an aftermarket remote start system does not void your vehicle's warranty. However, if the aftermarket system is installed incorrectly and causes damage to your vehicle's electrical system, Body Integrated Unit (BIU), or engine wire harness, Subaru is not responsible for covering those specific repairs.

Upgrade Your Subaru Ownership Experience

Keep your vehicle running at peak performance by protecting its vital electronics and powertrain systems with professional maintenance. Contact your local authorized Subaru service department today to program replacement key fobs, update your DCM telematics firmware, or install an OEM long-range remote start accessory.