Do subarus have starter problems?
Yes. Subarus can experience starter problems, typically tied to the battery, the starter motor or solenoid, or the vehicle's immobilizer system rather than a unique defect in Subaru designs. This article explains common causes, symptoms, and practical steps to diagnose and fix the issue.
Root Causes of Starter Problems in Subarus
Subaru starter problems typically come from a few common sources. The following list describes the main categories that affect a wide range of models and years.
- Battery and charging system issues: a weak or old battery, bad alternator, or corroded terminals can prevent the starter from receiving enough current.
- Starter motor wear or failure: the starter solenoid or windings can wear out over time, especially in high-mileage vehicles.
- Electrical connections and grounds: loose or corroded cables, especially at the battery or engine block ground, can cause intermittent no-start conditions.
- Ignition/immobilizer and key issues: if the immobilizer doesn’t recognize the key, the starter won’t engage even if the battery is good.
- Fuses and relays: a blown starter relay or related fuse can disable the starting circuit.
This overview highlights the main culprits that commonly show up in Subaru diagnostics. In many cases, the root cause is not the starter itself but accessory systems surrounding it, such as the battery or immobilizer.
Common Symptoms to Watch For
Knowing the telltale signs can help you determine whether you’re facing a starter problem versus a battery or ignition issue. The list below describes typical symptoms reported by Subaru owners.
- One click or no crank when turning the key or pressing the start button, sometimes followed by a slow crank.
- Intermittent starting behavior that improves after re-seating the key or cleaning corroded terminals.
- Clicking sound from the engine bay with no engine turning over, which may indicate a faulty starter relay or a failing starter.
- Key immobilizer/security light on the dash or a "Key Not Detected" message, suggesting an immobilizer/key issue.
- Dim or fluctuating instrument lights when attempting to start, hinting at a weak battery or poor connections.
If you observe these symptoms, it's a good idea to test the battery voltage first and then perform targeted checks on the starter and related wiring.
Model-Specific Considerations
While starting problems can affect many Subaru models, certain years and engines have been noted more frequently in owner reports and service reports. Always check for recalls or service bulletins for your exact vehicle year and trim.
Popular models and notes
Among commonly affected vehicles are older Outbacks, Legacies, and Foresters with the 2.5L four-cylinder engines. In some cases, early-generation keyless entry and immobilizer systems contributed to starting glitches. However, most issues can be resolved with straightforward maintenance or replacement of the faulty component.
Diagnosing and Fixing Starter Problems
Follow a structured approach to identify whether the issue is the starter, battery, or immobilizer. The steps below outline practical diagnostic actions you can take or discuss with a mechanic.
- Test the battery: measure voltage with the engine off and under cranking load; a healthy battery should show about 12.6V+ at rest and hold voltage under load.
- Inspect electrical connections: clean and snug battery terminals, ground straps, and starter connections to ensure good conduction.
- Check the starter and solenoid: listen for grinding or whining noises and test the starter with a professional tool or by bench-testing.
- Evaluate the alternator: with the engine running, voltage should be about 13.8–14.8V; a failing alternator can lead to a draining battery.
- Rule out immobilizer/key issues: if the security light stays on or your car won’t start despite a healthy battery, consult a dealer for key programming or immobilizer troubleshooting.
If you’re not comfortable performing these checks, a certified Subaru technician can diagnose the issue using diagnostic software and proper electrical testing procedures.
Preventive Maintenance and Tips
Preventive care can minimize the odds of starter-related problems. Here are proactive measures Subaru owners can take.
- Maintain a healthy battery: replace aging batteries and clean terminals; keep battery cables tight and free of corrosion.
- Protect electrical connections: routinely inspect grounds and starter wiring for wear or damage, especially after off-road use or in winter.
- Address starting issues promptly: even slow cranking or intermittent no-starts should be diagnosed early to prevent complete failure.
- Keep immobilizer systems in good shape: ensure keys and fob batteries are fresh and that the immobilizer is responsive; address any alarm or key issues quickly.
Regular maintenance and early diagnosis can help you avoid costly repairs and keep your Subaru starting reliably in all seasons.
Conclusion and Takeaways
Starter problems in Subarus are common enough to be a routine maintenance consideration, but they are typically caused by ordinary wear-and-tear parts like batteries, starters, or immobilizer components rather than a unique factory flaw. Routine care—battery health, clean connections, and prompt attention to warning signs—can keep your Subaru starting reliably.
Summary
In short, Subarus can experience starter problems, but most issues are addressable with standard automotive maintenance. By recognizing the symptoms, diagnosing the battery, starter, and immobilizer, and performing preventive care, owners can minimize downtime and extend the life of their starting system. Always consult a Subaru-certified technician for persistent or complex starting issues.
How do I know if my Subaru starter is bad?
How to Tell the Signs of a Broken Subaru Starter
- Slow or No Cranking. One of the primary signs of a broken starter motor in a Subaru is slow or no cranking when you turn the key in the ignition.
- Clicking Noise.
- Grinding Sound.
- Frequent Stalling.
- Smoke or Burning Smell.
What mileage do subarus start having problems?
Subarus typically start needing more frequent or significant repairs around 150,000 to 200,000 miles, although many can last much longer with proper maintenance. Common issues that can arise in this mileage range include head gasket problems, timing belt or chain replacements, and suspension or transmission issues, while specific models may have different timelines.
Common problems around 150,000–200,000 miles
- Head gaskets: On certain engines, head gasket failures are common and often occur by 150,000 miles.
- Timing belt: This needs replacement at a specific interval, and if it hasn't been done, it's a major repair waiting to happen.
- Engine seals: Expect potential leaks from engine seals or oil pan gaskets.
- Transmission: The transmission may need work or replacement around this mileage.
- Suspension: Components like bushings and bearings may need to be replaced due to wear and tear.
- Brakes and exhaust: These components can be prone to rust or failure at higher mileages.
Factors that influence longevity
- Maintenance: Following the recommended maintenance schedule, including oil changes, fluid checks, and filter replacements, is the most crucial factor in a Subaru's lifespan.
- Engine type: Some engines have known weak points. For example, turbocharged engines have been noted to have more frequent major failures around 150,000 miles compared to naturally aspirated engines.
- Driving conditions: A vehicle that is driven in harsh conditions, such as stop-and-go traffic or in areas with a lot of road salt, may experience problems sooner.
What you can do
- Check maintenance history: Before buying a used Subaru, ask for maintenance records to see if services were performed on time.
- Get a pre-purchase inspection: Have a trusted mechanic inspect the car to identify any potential problems before you buy.
- Perform routine maintenance: To prolong your current Subaru's life, stick to a regular maintenance schedule.
What is the lifespan of the starter on a Subaru?
around 100,000 miles
Like all mechanical components, a Subaru's starter motor has a limited lifespan, typically around 100,000 miles, though this can vary based on driving habits and conditions.
What is Subaru's most common problem?
Subaru's most common problem: transmission failure
Transmission slipping: If your Subaru is shuddering when you accelerate, you might need to replace a solenoid (wire coil) in the engine.
