Your Subaru Ascent won’t start, and you’re frustrated. What now?
Owning a Subaru Ascent is usually a joy, but like any vehicle, it can have issues. A car that won’t start is a problem that needs quick attention. This situation can leave anyone feeling helpless and stressed. But don’t worry, there are common reasons why this might happen, and most are easy to diagnose.
In this blog post, we’ll explore the various causes and provide practical solutions. Understanding these can save you time, money, and a trip to the mechanic. Read on to learn how to get your Subaru Ascent back on the road.
Common Causes
Experiencing trouble with your Subaru Ascent starting can be frustrating. Knowing the common causes can help diagnose the issue. Here are the primary reasons why your Subaru Ascent might not start:
The battery is a frequent culprit when a car won’t start. This component powers the electrical system, including the starter motor.
- Dead Battery: If the battery is dead, the car won’t start. Check for dim headlights or a weak horn.
- Corroded Battery Terminals: Corrosion on the terminals can prevent the battery from delivering power.
- Loose Connections: Loose battery cables can disrupt the power flow. Ensure they are tightly connected.
- Old Battery: Car batteries usually last 3-5 years. Consider replacing if it’s beyond this age.
Issues with the fuel system can prevent your Subaru Ascent from starting. The fuel system delivers fuel to the engine, and if disrupted, the engine won’t run.
- Empty Fuel Tank: Check the fuel gauge. An empty tank is an obvious but sometimes overlooked cause.
- Fuel Pump Failure: The fuel pump sends fuel from the tank to the engine. If it fails, the engine won’t start.
- Clogged Fuel Filter: A clogged fuel filter can block fuel flow, preventing the car from starting.
- Bad Fuel Injectors: Faulty injectors can prevent the engine from receiving the correct amount of fuel.
Battery Issues
Battery issues are a common reason why a Subaru Ascent won’t start. Understanding these issues can save you time and stress. Let’s explore two main battery problems: dead battery and corroded terminals.
Dead Battery
A dead battery is one of the most frequent causes of starting problems. Batteries lose charge over time. Cold weather can also drain a battery quickly. Check the battery voltage using a multimeter. A reading below 12.4 volts means the battery might be weak. You may need to jump-start the car or replace the battery.
Corroded Terminals
Corrosion on battery terminals can block the electrical flow. This can prevent the car from starting. Look for white, ashy deposits on the terminals. Clean the corrosion using a mixture of baking soda and water. Use a brush to scrub the terminals. Rinse with clean water and dry thoroughly. Reconnect the terminals and try starting the car again.
Starter Motor Problems
Facing issues with your Subaru Ascent not starting? Starter motor problems might be the cause. The starter motor is crucial for starting your vehicle. If it fails, your car won’t start. Let’s explore some common starter motor problems.
Faulty Starter
A faulty starter can prevent your Subaru Ascent from starting. The starter motor turns the engine over when you turn the key. If the starter motor is faulty, the engine won’t turn over. Symptoms include a clicking sound or no sound at all. Replacing the starter motor can resolve this issue.
Electrical Connections
Electrical connections are vital for the starter motor to work. Loose or corroded connections can cause starter motor failure. Check the battery terminals and cables. Ensure they are clean and tight. Sometimes, tightening the connections can fix the problem. If connections are corroded, cleaning them might help.
Ignition System Troubles
When your Subaru Ascent won’t start, the ignition system could be at fault. This system is crucial for starting the engine. It includes several components, each essential for a smooth start. Let’s dive into some common ignition system issues.
Ignition Switch Faults
The ignition switch is a critical part of the ignition system. It sends power to the starter and other electrical systems. If the ignition switch fails, your car won’t start.
Common symptoms include:
- The engine does not crank
- The dashboard lights flicker or do not light up
- No noise from the starter
To diagnose this issue, check for loose or corroded connections. If the switch is faulty, it may need replacement.
Spark Plug Issues
Spark plugs ignite the air-fuel mixture in the engine cylinders. If they are faulty, the engine won’t start.
Signs of bad spark plugs include:
- Engine misfires
- Poor fuel economy
- Difficulty starting the engine
Inspect the spark plugs for wear or deposits. A simple cleaning or replacement can often solve the problem. Use the correct type and gap for your Subaru Ascent.
Understanding these issues can help you troubleshoot why your Subaru Ascent won’t start. Regular maintenance of these components ensures your car runs smoothly.
Fuel System Problems
Experiencing a Subaru Ascent that won’t start can be frustrating. One common issue is fuel system problems. These issues can prevent your vehicle from running smoothly. In this section, we will explore common fuel system problems that may affect your Subaru Ascent.
Empty Fuel Tank
It may sound obvious, but an empty fuel tank is a frequent reason for a vehicle not starting. Always check your fuel gauge to ensure there is enough gas. If your fuel tank is empty, the engine cannot receive the fuel it needs to run.
- Check the fuel level regularly.
- Refuel before it reaches the empty mark.
- Keep a spare gas canister if possible.
Fuel Pump Failure
A faulty fuel pump can also cause starting issues. The fuel pump is responsible for delivering fuel from the tank to the engine. If the pump fails, the engine cannot get the fuel it needs.
Here are some signs of a failing fuel pump:
| Symptom | Description |
|---|---|
| Whining noise | A loud whining noise from the fuel tank |
| Engine sputtering | The engine sputters at high speeds |
| Starting issues | Difficulty starting the vehicle |
If you notice these signs, it is advisable to get your fuel pump checked. A professional mechanic can confirm the issue and suggest a replacement if necessary.
Key Fob Malfunctions
Experiencing issues with your Subaru Ascent not starting can be frustrating. One common culprit is the key fob malfunction. This small device plays a crucial role in your vehicle’s operation. Understanding the potential problems with your key fob can help you get back on the road faster.
Dead Key Fob Battery
A dead key fob battery is a common issue. If the battery is dead, your key fob won’t communicate with your car. This can prevent your Subaru Ascent from starting. Here are some signs your key fob battery might be dead:
- The key fob does not unlock the car doors.
- The engine does not start when you press the start button.
- The key fob light does not flash when you press buttons.
Changing the battery is a simple fix. Most key fobs use a small coin battery, like a CR2032. Check your owner’s manual for specific instructions.
Reprogramming Key Fob
Sometimes, your key fob might need reprogramming. This can happen if the signal between the key fob and the car is disrupted. Here are steps to reprogram your key fob:
- Enter your car and close all doors.
- Insert the key into the ignition and turn it to the “On” position.
- Press and hold the “Lock” button on the key fob for a few seconds.
- Turn the key back to the “Off” position and remove it.
If these steps do not work, you may need professional help. A dealership can reprogram the key fob for you.
| Problem | Solution |
|---|---|
| Dead Battery | Replace the battery |
| Need Reprogramming | Follow reprogramming steps |
Engine Sensor Failures
Experiencing a Subaru Ascent that won’t start can be frustrating. One common cause is engine sensor failures. These sensors play a crucial role in the engine’s operation. If they fail, your vehicle may not start. Let’s dive into two key sensors: the crankshaft sensor and the camshaft sensor.
Crankshaft Sensor
The crankshaft sensor monitors the position and rotational speed of the crankshaft. This information is vital for the engine control unit (ECU) to manage ignition and fuel injection. Symptoms of a faulty crankshaft sensor include:
- Engine misfires
- Poor acceleration
- Engine stalling
- Difficulty starting the vehicle
If the crankshaft sensor fails, the ECU cannot synchronize the engine’s operations. This often results in the engine not starting. Replacing the sensor may resolve the issue.
Camshaft Sensor
The camshaft sensor tracks the position of the camshaft. This helps the ECU determine the timing of the engine’s valves. Key symptoms of a failing camshaft sensor include:
- Check engine light illumination
- Poor engine performance
- Engine won’t start
A failing camshaft sensor disrupts the timing of the engine valves. This can cause the engine to not start. Ensuring the camshaft sensor is functioning properly is crucial for engine performance.
Both the crankshaft and camshaft sensors are vital for the engine’s operation. If your Subaru Ascent won’t start, these sensors could be the culprits.
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Diagnostic Tools
Having trouble with your Subaru Ascent not starting? Diagnostic tools can help identify the issue. By using the right tools, you can pinpoint the problem quickly. This saves both time and money. Here are two essential tools that can help you diagnose the issue with ease.
Obd-ii Scanner
An OBD-II scanner is vital for diagnosing car issues. It reads error codes from the car’s computer system. Plug the scanner into the OBD-II port, usually under the dashboard. Follow the on-screen instructions to read the error codes. These codes help identify what might be wrong. You can then search for these codes online to understand them better.
Multimeter Use
A multimeter measures electrical values in the car’s system. It checks the battery voltage, which is crucial for the car to start. Set the multimeter to measure voltage. Connect the probes to the battery terminals. A healthy battery should read around 12.6 volts. If the reading is below 12 volts, the battery might be the issue. The multimeter can also check fuses and wiring.
Professional Help
When your Subaru Ascent won’t start, it can be frustrating. Sometimes, the problem is too complex to handle alone. This is when seeking professional help becomes essential. Understanding when to call a mechanic and how to choose the right repair shop can save you time and money.
When To Call A Mechanic
It’s important to know when to call a mechanic. Here are some common situations:
- Engine Won’t Crank: If the engine does not crank or turns over slowly.
- Strange Noises: If you hear unusual sounds when attempting to start the car.
- Warning Lights: If dashboard warning lights stay on.
- Electrical Issues: If the lights or other electronics are not working.
Choosing A Repair Shop
Selecting the right repair shop is crucial. Consider these tips:
| Criteria | Details |
|---|---|
| Reputation | Look for shops with good reviews and ratings. |
| Experience | Choose shops with certified and experienced mechanics. |
| Cost | Request a quote and compare prices. |
| Location | Pick a shop close to your home or office. |
Using these tips, you can find a reliable repair shop. Your Subaru Ascent will be in good hands.
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Frequently Asked Questions
Why Won’t My Subaru Ascent Start?
Check the battery. It might be dead or have loose connections. Also, check the fuel level.
What Should I Do If My Subaru Ascent Won’t Start?
First, check the battery and fuel. Then, inspect the starter and ignition system for issues.
Can A Dead Battery Cause My Subaru Ascent Not To Start?
Yes, a dead or weak battery can prevent your Subaru Ascent from starting. Check for corrosion too.
How Do I Check The Starter On My Subaru Ascent?
Listen for a clicking sound when turning the key. If it clicks but doesn’t start, check the starter.
What Are Common Reasons A Subaru Ascent Won’t Start?
Dead battery, faulty starter, ignition issues, or empty fuel tank are common reasons your Subaru Ascent won’t start.
Conclusion
Fixing a Subaru Ascent that won’t start can be frustrating. Check the battery first. Ensure connections are tight and clean. Listen for clicking sounds when you turn the key. This might indicate a starter issue. If problems persist, consult a mechanic.
Regular maintenance prevents many issues. Keep your Subaru Ascent in good condition. Your vehicle will run smoothly. Stay safe on the road.