Is your Subaru Forester refusing to start? This common issue can be frustrating and inconvenient.
When your car won’t start, it could be due to several reasons. Understanding the root cause is essential before you can fix it. Your Subaru Forester is known for reliability, but like any vehicle, it can encounter problems. From battery issues to fuel system failures, there are many potential culprits.
This guide will help you identify why your Subaru Forester won’t start and provide solutions to get you back on the road. Let’s dive into the common causes and what you can do about them.
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Common Battery Issues
Your Subaru Forester won’t start? Often, the problem lies with the battery. Batteries can be tricky. They wear out over time or develop issues. Understanding common battery problems can help.
Dead Battery
A dead battery is a common issue. It can leave you stranded. Batteries lose charge due to many reasons. Leaving lights on is a common cause. Extreme weather also affects battery life. Car batteries usually last 3 to 5 years. After this, they may fail unexpectedly. Regular checks can prevent surprises.
Corroded Terminals
Corroded terminals can stop your car from starting. Corrosion builds up on battery terminals over time. This blocks the flow of electricity. You may notice a white or bluish powder. Cleaning the terminals can help. Use a wire brush and baking soda solution. Always disconnect the battery before cleaning. Corroded terminals can also signal other issues. It’s wise to have them inspected by a professional.
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Starter Motor Problems
If your Subaru Forester won’t start, it could be due to starter motor problems. The starter motor plays a crucial role. It helps the engine to turn over. When it fails, your car won’t start. Below are two common issues related to the starter motor:
Faulty Solenoid
The solenoid is an essential part of the starter motor. It acts as a switch to engage the motor. If the solenoid is faulty, the motor won’t work. This means your engine won’t crank. Here are signs of a faulty solenoid:
- No clicking sound when turning the key
- Intermittent starting issues
- Starter motor stays on after starting the engine
If you notice these signs, the solenoid might be the issue. You can test it with a multimeter. Make sure the connections are tight. If the solenoid is bad, replace it immediately.
Worn Out Motor
A worn out motor is another common issue. Over time, the starter motor can wear out. It may not provide enough power. This can prevent the engine from starting. Here are symptoms of a worn out motor:
- Grinding noise when starting the engine
- Starter motor spins but doesn’t engage the flywheel
- Smoke or burning smell from the motor
These symptoms indicate the motor is failing. Check for any visible wear or damage. Consider replacing the starter motor if it is worn out. Regular maintenance can prevent these issues.
Ignition System Failures
There are many reasons why your Subaru Forester won’t start. One of the most common causes is ignition system failures. These issues can be tricky to diagnose. But understanding the common problems can help you identify and fix them.
Broken Ignition Switch
A broken ignition switch can prevent your car from starting. Ignition switches are crucial for starting the engine. When you turn the key, the ignition switch sends power to the starter motor. If the switch is broken, the circuit will not complete. This means no power to the starter motor.
Signs of a broken ignition switch include:
- The car does not start when you turn the key.
- No dashboard lights come on.
- Intermittent loss of power while driving.
If you notice these signs, you might need to replace the ignition switch.
Damaged Spark Plugs
Spark plugs are small but essential for your engine. They ignite the fuel-air mixture in the cylinders. Damaged or worn-out spark plugs can cause your Subaru Forester not to start.
Common signs of damaged spark plugs include:
- Difficulty starting the car.
- Poor engine performance.
- Engine misfires.
Check your spark plugs regularly. Replace them if they show signs of wear or damage.
Fuel Delivery Troubles
Fuel delivery troubles can prevent your Subaru Forester from starting. These issues affect the flow of fuel to the engine. Let’s explore two common causes: an empty gas tank and a clogged fuel filter.
Empty Gas Tank
One of the simplest reasons your Subaru Forester won’t start is an empty gas tank. This might seem obvious, but it’s easy to overlook. Always check your fuel gauge. Sometimes, the gauge may show incorrect readings. In such cases, fill up the tank and see if the engine starts. Keeping your gas tank filled helps avoid this problem.
Clogged Fuel Filter
A clogged fuel filter can also cause starting issues. The fuel filter keeps debris out of the fuel system. Over time, it can become clogged and restrict fuel flow. This stops the engine from getting enough fuel. Regularly replacing the fuel filter helps maintain proper fuel flow. If you suspect a clogged filter, consult a mechanic. They can check and replace the filter if needed.
Electrical System Glitches
Facing issues with your Subaru Forester not starting? Electrical system glitches might be the culprit. This section will help you understand common electrical issues and how to address them.
Blown Fuses
Blown fuses are a common problem in vehicles. They protect the electrical system by breaking the circuit when there’s a surge. If your Subaru Forester won’t start, check the fuses first.
- Locate the fuse box, usually under the dashboard or hood.
- Use the diagram on the cover to find the starter fuse.
- Check if the fuse is broken or blackened.
- Replace it with one of the same amperage if needed.
Always keep spare fuses in your vehicle for emergencies. This quick fix can save you from a tow.
Faulty Wiring
Wiring issues are another common cause of starting problems. Faulty wiring can disrupt the power supply, preventing your car from starting.
Here are signs of faulty wiring:
- Intermittent starting issues: The car starts sometimes, but not always.
- Dim lights: Lights flicker or are dimmer than usual.
- Strange smells: A burning smell indicates damaged wires.
If you notice these signs, inspect the wiring. Look for visible damage or loose connections. You may need a professional to fix complex issues.
Regular maintenance can help prevent electrical problems. Check the wiring and fuses periodically to ensure everything is in good condition.
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Security System Lockout
Is your Subaru Forester refusing to start? The security system might be the issue. Many vehicles have advanced security systems that protect against theft. But sometimes, they can also prevent the car from starting. This is called a security system lockout. Let’s explore some common causes related to this problem.
Immobilizer Issues
The immobilizer is a key part of your car’s security system. It prevents the engine from starting without the correct key. If the immobilizer has an issue, your Subaru Forester won’t start. This can happen if the system fails to recognize your key. Sometimes, the immobilizer may need a reset or repair.
Key Fob Malfunctions
Your key fob sends a signal to the car’s security system. If the key fob is not working, the car won’t start. This could be due to a dead battery in the key fob. Replacing the battery might solve the problem. If not, the key fob itself might need to be replaced.
Engine Mechanical Issues
If your Subaru Forester won’t start, engine mechanical issues could be the culprit. These problems can be serious and may require immediate attention. Two common issues are a seized engine and timing belt failure. Understanding these can help you diagnose the problem and take action.
Seized Engine
A seized engine occurs when internal parts stop moving. This happens due to lack of lubrication or overheating. Without oil, metal parts grind together, causing damage. Overheating can warp metal components, making them stick. A seized engine may make a loud clunk when you try to start the car. In severe cases, the engine won’t turn over at all.
Timing Belt Failure
The timing belt ensures engine valves open and close at the right times. If the belt breaks, the engine may stop running. A broken timing belt often leads to engine damage. Valves can hit pistons, causing costly repairs. Symptoms of timing belt failure include a ticking noise from the engine and the car not starting. Regularly check and replace the timing belt to avoid this issue.
Diy Troubleshooting Tips
When your Subaru Forester won’t start, it can be frustrating. Luckily, you can try some DIY troubleshooting tips before calling a mechanic. This guide will help you diagnose and possibly fix the issue yourself.
Basic Tools Needed
- Multimeter
- Socket wrench set
- Screwdrivers
- Battery charger
- Wire brush
- Gloves
- Safety goggles
Step-by-step Guide
-
Check the Battery
- Open the hood and locate the battery.
- Use the multimeter to check the voltage.
- If the voltage is below 12.6V, charge the battery.
- Clean the terminals with a wire brush.
-
Inspect the Fuses
- Find the fuse box under the dashboard.
- Remove and inspect each fuse.
- Replace any blown fuses.
-
Test the Starter
- Locate the starter motor under the car.
- Use a socket wrench to tap it lightly.
- Try starting the car again.
-
Check the Fuel System
- Ensure there is enough fuel in the tank.
- Listen for the fuel pump’s humming sound.
- If silent, check the fuel pump fuse.
-
Examine the Ignition System
- Remove a spark plug and inspect it.
- Replace any worn-out spark plugs.
- Reattach the spark plug wire.
Frequently Asked Questions
Why Won’t My Subaru Forester Start?
There could be many reasons. Check the battery, starter, fuel system, and ignition switch.
What Are Common Subaru Forester Starting Problems?
Common issues include dead battery, faulty starter, bad alternator, or fuel delivery problems.
How Do I Know If My Forester’s Battery Is Dead?
Look for dim lights, slow engine crank, or no electrical power. Use a multimeter to check.
Can A Bad Alternator Cause My Forester Not To Start?
Yes, a bad alternator can drain the battery, preventing the engine from starting.
What Should I Do If My Subaru Forester Won’t Start?
Check the battery, starter, and fuel system. Consult a mechanic if the problem persists.
Conclusion
Resolving a Subaru Forester that won’t start can be simple. Check the battery and connections first. Inspect the fuel system and ignition. Sometimes, a minor issue causes big problems. Regular maintenance helps prevent these issues. Always consult a professional if you’re unsure.
Your vehicle’s reliability depends on proper care. Addressing issues quickly saves time and money. Keep your Subaru Forester in top shape. Enjoy smooth, worry-free drives.