Subaru Rex Wont Start? Here’s Quick Solutions to Most Common Problems

Introduction

As a qualified car mechanic with over 20 years of hands on experience, I’ve seen plenty of people battling when their Subaru Rex Won’t Start. And let’s be honest, not being able to start your car when you need to drive is incredibly bothersome.

But don’t lose hope, you’ve come to the right place, no need to keep googling searches like “how to fix a Subaru that wont start“, I got you covered. My name’s Robby, a certified auto mechanic with over two decades of experience, and in this guide, I’ll outline the usual reasons for why your Rex struggles to start. I’ll cover all the commonplace offenders so you can identify what’s causing issues, plus what to do to resolve each specific situation. Drawing on my two decades of training and on the job experience, I’ll offer usable troubleshooting tips to get your Subaru Rex up and running ASAP!

Quick Solution Alert! 🚗💡

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Why Won’t My a Subaru Start?

Subaru Rex wont start

Before we tackle the laundry list of possible issues and solutions, it’s key to first get on the same page of the core problem. When you climb into your Subaru Rex and realize “it won’t start!”, there could be a number of things causing the troubles. Maybe the engine isn’t cranking at all, or possibly it’s cranking but not firing. Or you might notice clicking sounds when you try to start it, but sadly no ignition occurs. Each scenario can indicate different mechanical issues.

Common Reasons Why Your Subaru Rex Won’t Start

There are many reasons why your Rex won’t fire up. Typical causes include a weak or drained battery, faulty alternator, starter motor issues, fuel system snags, plus electrical or wiring issues. Each of these issues can show up differently, needing specific methods of diagnosis and repair to get you driving again pronto. All of which, we’ll delve into.

Symptoms of a Subaru Rex That Won’t Start

Recognizing these warning signs will guide you toward the core issue. For instance, when you turn the key and you hear it clicking but no ignition, it often signifies a fuel or ignition issue.

Analysis of The Reasons Why Your Subaru Rex Won’t Start

The initial move in fixing the no-start hassle is identifying the exact origin of the issue. So let’s explore the most frequent causes of the Rex refusing to start when you turn the key.

Battery Issues in a Subaru Rex

car wont start but battery is good
Image Credit: MechanicAnswer.com

In the majority of cases, the most common reason a Subaru Rex won’t start comes down to battery troubles. Specifically, a drained or weak battery prevents the engine from turning over. The car’s battery supplies the required power to start the engine and energize all your electronics. Signs of a failing battery entail labored or difficult cranking, faint headlights, or a battery alert symbol illuminated on the dash. A battery charger can recharge a dead battery if you don’t have the help of another vehicle to jump start it, but do have an electrical socket nearby like at home.  And a portable jump starter lets you charge p the battery without another vehicle, and by the roadside without the need for an electrical socket, so you are never stuck.

Alternator Problems in a Subaru Rex

car wont start alternator

The Alternator keeps the battery charged by using engine power while driving. A malfunctioning alternator can easily prevent your Subaru Rex from starting since it cannot recharge the battery, draining it completely so that one day you hop in your beloved Subaru Rex and it just can’t start. Symptoms of a malfunctioning alternator may include an illuminated battery or alternator warning symbol on its dash, faint headlights while idling, or a grinding noise from the engine while running.

Starter Motor Failures in a Subaru Rex

car wont start wont turn over

The starter motor is key to turning over the engine when you attempt to start your Subaru. If the starter is faulty, the engine might not crank, keeping your Rex from starting. Listen for clicking noises when you turn the key or grinding while trying to start, which could indicate starter troubles.

Fuel System Issues in a Subaru Rex

car wont start fuel filter

We’re not talking about running out of gas like a silly goose. Rather, it’s problems in the fuel system itself that could leave your Rex unable to start up. Your car uses gas uses gas to mix with air and powers the engine. Issues in fuel delivery like a clogged fuel filter or damaged fuel pump relay can result in the engine lacking the fuel it needs to start. Fuel injectors can also get clogged over time, so consider a fuel injector cleaner like Red Line to clear any blockages and improve starting.

Electrical System or Wiring Problems in a Subaru Rex

car wont start electrical issue
Image Credit: MechanicAnswer.com

Ok, well yes that image is a joke, but I want to emphasize modern cars now rely heavily on electronics, increasing the number of things that can go wrong. Even in older cars, the usual suspects include blown fuses, ignition problems, broken ignition switches, or broken sensors. Faulty wiring and electronics like these may prevent your car from starting. Pay attention to intermittent starting, dashboard alerts, or failure to crank as hints of an underlying electrical issue. Pinpointing and fixing these often needs a skilled mechanic near you.

Solutions: Let’s Get Your Subaru Rex Starting Again!

If you think you might know what the issue may be, it’s time to figure out the reason behind your car’s failure to start, and then the next step is to try to mend the problem. Here’s advice for the typical problems we’ve talked about already:

How to Identify and Fix Battery Issues in a Subaru Rex

car not starting but battery is fine

The first step if a battery issue is suspected for the no start is to have a look at the battery terminals. Ensure they are clean, tight, and properly connected. If the terminals are in fact dirty, try scrubbing them with a baking soda and water solution.

Once you have checked the battery terminals, you can check to see if the battery is just out of charge, or worse, it’s old and weak, or dead and needs to be replaced. For this, you can charge the battery in a few different ways:

If the battery charges fully and performs as expected, the issue may be resolved. However, if the battery has aged or lacks capacity, replacing it will be necessary. Otherwise, even sufficiently charging it to start your Rex may only provide temporary relief before it runs out of charge again in the near future. Using a multimeter or OB2 scanner to evaluate the battery’s condition can determine if it’s worth preserving or requires replacement. Suitable replacement batteries for your specific Subaru can be found on Amazon here by entering your vehicle details to filter for the right fit and choosing a highly-rated seller.

Robby Recommends:

Portable Car Battery Jump Starter Charger - NOCO Boost Plus GB40

At Home Battery Charger - YONHAN - Fully Automatic

Jumper Cables by Energizer for Car Battery - Heavy Duty

NOCO Boost Plus GB40 1000A UltraSafe Car Battery Jump Starter

YONHAN Battery Charger Fully-Automatic

Energizer Jumper Cables for Car Battery, Heavy Duty

If charging your Rex’s battery fails to solve ongoing issues like frequent draining and recharging even after installing a new battery, an underlying problem likely causes the excessive drain. Professional diagnostic services would then be needed to inspect and identify the root cause. You can also consult a mechanic online through us or obtain an instant quote from a mobile mechanic.

How to Identify and Fix Alternator Problems in a Subaru Rex

Car wont start replace alternator needed

If you suspect the alternator is causing your vehicle to have problems starting, you can test it yourself. If you can temporarily get the vehicle running (you may need a jump start), with the engine on, remove the positive battery terminal. If the car dies pretty quickly after that, it’s likely a bad alternator. Keep in mind though this test can be risky and harm sensitive electronics in your ride, so seeking advice from a qualified mechanic locally or online is best before trying it.

If you figure out that the alternator is the problem, it’s a case of having it replaced. I recommend consulting an online or local mechanic as they will advise you on how difficult the repair is for your specific model, and you can work out if you want to try it yourself, or with the advice of an online mechanic

If you do want to try it yourself or take it to a local garage, you can often buy the replacement parts yourself cheaper than at the garage, but you need to know what to get for your model of Subaru Rex. You find all the information you need about your specific vehicle by searching online for something like “free vin check Subaru“, which is a purchasable report, that will give the specs for your vehicle and which parts are compatible, and then you can go get the alternator parts you need. However, an easier option is, Amazon probably has the alternator you need online, at a cheaper price, and their site easily shows which ones will go in your specific car model. Check the Amazon alternator page here

How to Identify and Fix Starter Motor Problems in a Subaru Rex

starter motor issues in a ford

If you wonder if the starter motor is the root cause for your Rex failing to start up, listen for a clicking noise when you turn the ignition key. If heard, but the engine does not turn over, the starter motor likely requires replacing. You can take it to a local garage and have them repair it, or repair it yourself with the help and advice from an online mechanic guiding you. 

If you need it, one of the cheapest and easiest places to get a new starter motor, for your exact vehicle model is on the Amazon here.

How to Identify and Solve Fuel System Problems in a Subaru Rex

clogged fuel filter car wont start

If you think a fuel system issue might be to blame for the no-start, tune your ears for the fuel pump hum when you turn the key to “on” before trying to turn over the car. The pump should emit a faint humming for a few seconds. If you can’t hear that noise, the fuel pump could be defective. Difficult starting, stalling, or lagging acceleration may also result from a blocked fuel filter. Filter and pump issues normally require a skilled mechanic to inspect and repair them properly, often involving fuel pressure testing and specialized diagnostic equipment. Later in this article, I detail the best ways to get help from a local Subaru mechanic near you. 

How to Fix Electrical or Wiring Issues in a Subaru Rex

fuses to check when car wont start

If you suspect it’s an electrical circuitry issue, first examine the fuses for the ignition system, and swap out any that have blown. If your Rex starts after this, it was a successful, inexpensive fix! However, if it still won’t start, even sometimes, the ignition switch itself could be the cause of the issue. Dash lights on the dashboard could also mean a faulty component. These can be complex problems needing a qualified mechanic to diagnose and fix (see below advice on local mechanics).

How to Prevent Starting Issues in a Subaru Rex

As grandad used to say: “An ounce of prevention is worth a pound of cure”. Here’s how to avoid future problems starting your Rex:

Routine Upkeep of Your Subaru Rex

Regular maintenance on car to prevent starting issues

Routine maintenance is key to avoiding issues, including oil changes, battery checks, cleaning terminals, replacing the fuel filter as needed, and having a mechanic examine the car regularly. If confused about maintenance for your model, ask a mechanic locally or online for clarification.

Drive Your Rex Regularly

drive regular to avoid car troubles

If your Subaru Rex happens to sit motionless in your garage or driveway for extended times without being driven, the battery can deplete as it is not being recharged by the engine running, through the alternator. Try your best to use your vehicle regularly to keep a charged battery. If you remember you have not driven your car in a while, take it for a brief spin around town to ensure there is still a charge left.

Note: Letting the battery completely drain is also bad for its longevity, so try to avoid that.

Take Notice Of Warning Signs

Check Engine Control Light on a Vehicle Dashboard

If you notice any abnormal things like unusual sounds, changes in driving and performance, or warning lights lit up on the dashboard, do not ignore them. These are often early signs of an issue that should be addressed ASAP before they escalate into larger problems later on. Consult with a mechanic locally or online about these problems and get advice on if they require attention.

When to Ask a Subaru Mechanic Online

If your schedule is packed, or despite putting in real effort on your own, you still can’t get your car to start, consider consulting a Subaru mechanic online. It delivers expert guidance in just minutes from the comfort of home, and is far less expensive than a tow and diagnosis at the local garage.

Advantages of an Online Subaru Mechanic

Happy mechanic repairing car looking at camera

By detailing what you’ve already tried and sharing specifics on the no-start issue, online mechanics can then offer a custom action plan to help get your car started again. With so many Subaru mechanics available they can help fix nearly any problem, it doesn’t if matter it’s your Rex that’s having issues or a Subaru Levorg Layback won’t start, the online mechanics can help sort anything in no time. And with many household budgets tighter these days, an online mechanic provides instant affordable help when you need it most, 24/7.

You can explain the issues you’re having, ask Subaru mechanics endless questions, and even submit photos and videos so you can demonstrate to the expert what you mean. You can connect with them via online chat or phone call, whatever you like. The Subaru specialist will diagnose the problem, recommend the top solution for your particular situation, and even walk you through basic maintenance step-by-step.

If you’re seeking reassurance from a certified mechanic before purchasing expensive parts, or just pressed for time – online assistance has real benefits. Give it a try to see firsthand how convenient fixing problems can be.

So feel free to try out our talk to a Subaru mechanic free service and see for yourself!

When and How to Get a Local Subaru Mechanics Help

automobile mobile mechanic

When your Subaru Rex won’t start, and you are unable to repair it yourself, thinking about how to get your vehicle to the garage can be a nightmare. There are options like roadside services, that come to you and can provide simple fixes to get your car moving enough again, so you can get it to a mechanic garage for proper repairs. You can also use a towing service, but these can be costly, easily into the hundreds of dollars. A much better option is the use of a mobile mechanic, who will come to you at your home, place of work, or by the roadside, and carry out repairs there and then for you, so you can get your Rex started again ASAP.

So if you think a mobile mechanic is the best solution for you, instead of searching on Google something like  “mobile auto repair shops near me“, the best in the USA that also covers most towns is YourMechanicI have personally recommended them to countless people across the country and they always have a great experience.

Reasons I recommend them:

  • They use experienced ASE-certified mechanics
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  • You see the price upfront, no surprises or hidden fees
  • Low Cost compared to regular garages

If you would like to know more, the process to use them is this.

  1. Visit their official website here: YourMechanic
  2. Get an instant free quote for what you need
  3. Book a time and place for the mechanic to come to you
  4. The mechanic will arrive in a fully stocked repair van and repair it right in front of you
  5. Pay when the job is completed.

Super easy, super reliable, super convenient, and highly recommended.

Conclusion

In short, when your Subaru Rex doesn’t turn over, it can be a major inconvenience. However, grasping what might be causing the problems, being able to diagnose them, and knowing what actions are required in each case, and where to find help if necessary, will be a huge help. Remember that routine maintenance is vital to avoiding most vehicle issues.

Frequently Asked Questions (FAQs) When a Subaru Rex Won’t Start

Subaru Rex won’t start but lights come on?

If your Subaru Rex‘s lights illuminate but it still won’t start, the issue may not be related to the battery. More than likely there is a problem with the starter motor. Check to see if you hear any clicking noises when attempting to crank the key. If so, the starter motor is attempting to activate but failing. Get a mechanic check over the starter motor – it may need to be fixed or swapped out.

Subaru Rex won’t start but has power?

When your Subaru Rex has power (lights, radio etc work) but fails to start, there may be a fuel delivery problem. Issues like a faulty fuel pump relay could stop fuel getting to the engine. Without enough fuel, combustion can’t happen and the engine won’t start. Listen near the back seat when turning the key – you should hear the fuel pump prime for a few seconds. If not, have a mechanic check the fuel system.

Subaru Rex won’t start but battery is fine?

If your Subaru Rex‘s battery checks out OK and is fully charged, but the car still refuses to start, the underlying cause is likely electrical. Possible issues include a bad ignition switch, broken sensor, or wiring problems. As electrical issues can be tricky, diagnosis by a professional mechanic is best. They can accurately identify the specific electrical fault and have it repaired.

Subaru Rex won’t start just clicking?

When you turn the key and just hear clicking but the engine doesn’t crank, the most common cause is a faulty starter motor. The click comes from the starter solenoid attempting to activate the starter motor, but the motor itself fails to crank the engine. As the starter motor needs physical fixing or swapping out, seek help from a reliable mechanic to get your Subaru Rex running again.

What if my Subaru Rex won’t start up?

First things first, take a deep breath and don’t panic. Check for any odd noises, flashing lights, or changes in how it runs that could point to the issue. Chances are the culprit is one of the common problems we’ll talk about here. If you still can’t locate the exact issue, you’ll have to consult a trusted Subaru mechanic locally or online.

Determine if my Subaru Rex won’t start because of the battery?

Clues that your Subaru’s battery is the issue include, a slow cranking engine, dim front lights, and battery warning symbols lighting up on the dash. Also check that the battery terminals are clean, corrosion-free, and tightly fastened. If your battery is older it’s probably best to just replace it completely.

How to prevent my Subaru Rex from failing to start in the future?

To prevent this frustration from reoccuring, regular upkeep is crucial. This includes oil changes, inspecting the battery and cleaning its terminals, replacing the fuel filter when necessary, and getting your Subaru Rex evaluated by a mechanic routinely. Also, make sure to drive the car often so the battery stays charged.

Can I consult an online mechanic if my Subaru Rex fails to start up?

Yes, you can. An online mechanic service like ours can offer instant expert Subaru mechanic assistance and recommendations, without you having to leave your house. If your vehicle fails to start and is immobile in the parking area, this is especially helpful.

In what ways can services like MechanicAnswer.com be of service if my Subaru Rex isn’t starting?

We pair you with certified Subaru technicians who can provide suggestions specific to your unique predicament. You can inform them about your vehicle issues, ask as many questions as needed, and even submit videos or pictures so you can comprehensively demonstrate the problem. The specialist auto mechanic will be able to aid, identify the problem, and put forward the best plan of action and walk you through it.

Interesting Subaru Rex Facts

Did you know that the Subaru Rex was actually the first kei car to feature a turbocharged engine? That’s right, this little powerhouse was ahead of its time, packing a punch with its 0.5-liter turbocharged engine. And get this – despite its small size, the Rex was a pioneer in fuel efficiency, boasting an impressive 54 miles per gallon! That’s like, “I can drive around the world on a single tank” kind of efficiency. Plus, with its quirky and unique design, the Rex stands out in a crowd, making it a real head-turner on the road. So, if you’re feeling down about your Rex not starting, just remember all the cool and interesting facts that make it such a special ride! Who knows, maybe it’s just taking a little break to show off its uniqueness.

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Which Mechanic Suits You?

  1. Chat with an Online Mechanic to get instant, unlimited help and advice for 1 full week, for just £5.
  2. Get help from a Mobile Mechanic. We  recommend Fixter. They will come to you and fix your vehicle at a time that suits you. Instant free quote online below. We recommend the online mechanic first, as it’s cheaper for you, and you may not need an in-person mechanic.

Which Mechanic Suits You?

  1. Chat with an Online Mechanic to get instant, unlimited help and advice for 1 full week, for just $5.
  2. Get in-person help from a Mobile Mechanic. We recommend YourMechanic. They will come to you and fix your vehicle at a time that suits you. Instant free quote online below. We recommend the online mechanic first, as it’s cheaper, and you may not need an in-person mechanic.

Choose Your Mechanic

1. Chat with A.I. Mechanic (Robot Robby)
  • Free 7-day trial
  • A.I. Mechanic that is trained by our human mechanic writers. As helpful as a human mechanic for expert advice, troubleshooting, and repair guidance.
2. Chat with a Human Mechanic Online
  • Join for just $5, and $39/month. Cancel anytime
  • Real human ASE-certified mechanics available 24/7

Which Mechanic Suits You?

  1. Chat with an Online Mechanic to get instant, unlimited help and advice for 1 full week, for just $5.
  2. Get in-person help from a Mobile Mechanic Near You. They will come to you and fix your vehicle at a time that suits you. If there are none near you, you will be redirected to the online mechanic.

Which Mechanic Suits You?

  1. Chat with an Online Mechanic to get instant, unlimited help and advice for 1 full week, for just £5.
  2. Get help from a Mobile Mechanic. We  recommend Fixter. They will come to you and fix your vehicle at a time that suits you. Instant free quote online below. We recommend the online mechanic first, as it’s cheaper for you, and you may not need an in-person mechanic.

Which Mechanic Suits You?

  1. Chat with an Online Mechanic to get instant, unlimited help and advice for 1 full week, for just $5.
  2. Get in-person help from a Mobile Mechanic. We recommend YourMechanic. They will come to you and fix your vehicle at a time that suits you. Instant free quote online below. We recommend the online mechanic first, as it’s cheaper, and you may not need an in-person mechanic.

Where Can I Find My VIN?

Your vehicle’s unique Vehicle Identification Number (VIN) can be found on the title document, the vehicle registration, and the insurance policy. It is a series letters and numbers like this as example: WAUGC0896JA235262. The VIN can also be located on the following locations on the vehicle itself:

how to find VIN on vehicle