Audi A5 Sportback Wont Start? Here’s Quick Solutions to Most Common Problems

Intro

As a qualified car mechanic with over 20 years of experience, I’ve helped plenty of people battling when their Audi A5 Sportback Won’t Start. And I’ll be straight with you, not being able to start your car when you need to drive straight up sucks.

But don’t worry, you’ve come to the right place, no need to keep googling searches like “Audi starter problem“, 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 most common explanations for why your A5 Sportback won’t start. I’ll cover all the commonplace culprits so you can diagnose what’s happening, plus what to do to resolve each specific problem. Drawing on my two decades of personal experience, I’ll offer practical troubleshooting tips to get your Audi A5 Sportback started as soon as possible!

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Why Won’t My an Audi Start?

Audi A5 Sportback wont start

Before we dive into the laundry list of possible faults and fixes, it’s vital to first gain an understanding of the central issue. When you climb into your Audi A5 Sportback and discover “it won’t start!”, there could be a number of components causing the headaches. Maybe the engine doesn’t turn over whatsoever, or maybe it’s cranking but not firing. Or you might hear clicking when you try to start it, but ultimately nothing happens. All these situations can indicate various problems under the hood.

Common Reasons Why Your Audi A5 Sportback Won’t Start

There are a host of reasons why your A5 Sportback won’t fire up. Typical causes include a dead or weak battery, faulty alternator, starter motor complications, fuel system snags, plus electrical or wiring malfunctions. Every one of these issues can present differently, requiring specific methods of diagnosis and repair to get you back on the open road as quick as possible. All of which, we’ll delve into.

Symptoms of an Audi A5 Sportback That Won’t Start

Recognizing these red flags will help uncover the underlying mechanical problem. For instance, when you turn the key or press the start button and you hear it turning over yet no start up, it often means a problem with either fuel delivery or ignition issues.

Analysis of The Reasons Why Your Audi A5 Sportback Won’t Start

The first step in remedying the no-start headache is pinpointing the specific origin of the issue. So let’s take a closer look at the most frequent explanations for the A5 Sportback refusing to start when you turn the key.

Battery Issues in an Audi A5 Sportback

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

In the majority of cases, the most frequent reason an Audi A5 Sportback won’t start comes down to battery troubles. Specifically, a weak or dead battery prevents the engine from cranking. The car’s battery supplies the required power to ignite the engine and run all your electronics. Signals of a dying battery include labored or difficult cranking, faint headlights, or a battery alert symbol aglow on the dash. A battery charger can recharge a drained 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 an Audi A5 Sportback

car wont start alternator

The Alternator keeps the battery juiced up by using engine power while driving. A malfunctioning alternator can easily stop your Audi A5 Sportback from starting since it fails to recharge the battery, depleting it completely so that one day you climb into your beloved Audi A5 Sportback and it simply can’t start. Signs of a malfunctioning alternator can be an illuminated battery or alternator warning symbol on the dashboard, dim headlights while idling, or a whirring noise from the engine while running.

Starter Motor Failures in an Audi A5 Sportback

car wont start wont turn over

The starter motor is key to turning the engine when you go to start up your Audi. Should the starter fail, the engine can’t crank, preventing your A5 Sportback from starting. Listen for clicking noises when you turn the key or grinding as you try to start it, possibly meaning starter issues.

Fuel System Issues in an Audi A5 Sportback

car wont start fuel filter

This isn’t about running out of gas like a silly goose. Rather, it’s problems in the fuel system itself potentially leaving your A5 Sportback unable to start. Your car uses gas uses gas to combine with oxygen and powers the engine. So problems here 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 clean them out and improve starting.

Electrical System or Wiring Problems in an Audi A5 Sportback

car wont start electrical issue
Image Credit: MechanicAnswer.com

Ok, well yes that image is a joke, but I want to emphasize modern vehicles rely on electronics, expanding the number of things that can go wrong. With older cars, common culprits include blown fuses, ignition problems, broken ignition switches, or broken sensors. Electrical issues and electronics like these can all prevent your Audi A5 Sportback from starting. Watch for your car only starting sometimes, dashboard alerts, or failure to crank as hints of an underlying electrical issue. Diagnosing and repairing these typically requires a certified mechanic near you.

Solutions: Let’s Get Your Audi A5 Sportback 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 inability to start up, and then the logical next move is to try to repair the issue. Here’s advice for the common problems we’ve talked about already:

How to Identify and Fix Battery Issues in an Audi A5 Sportback

car not starting but battery is fine

The first step if a battery issue is suspected for the no start is to check the battery terminals. Make sure they are corrosion-free, secure, and properly connected. Should you find corrosion or gunk buildup on the terminals, a baking soda and water solution can help clean them.

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, replacing the battery will be required if it is old, weak or dead. Otherwise, even sufficiently charging it to start your A5 Sportback may only provide temporary relief before it likely runs out of power again soon. 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 Audi 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 A5 Sportback’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 an Audi A5 Sportback

Car wont start replace alternator needed

If you think the alternator is the reason your vehicle won’t start, a test can confirm. If you can temporarily get the auto running (you may need a jump start), with the engine on, disconnect the positive battery terminal. It’s probably the alternator if the engine dies soon after disconnecting the positive lead. Keep in mind though this test can be risky and damage delicate electronics in your motor, so consulting a trained mechanic in your area 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 Audi A5 Sportback. You find all the information you need about your specific vehicle by searching online for something like “vin check Audi“, 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 an Audi A5 Sportback

starter motor issues in a ford

If you think the starter motor might be causing your Audi A5 Sportback to not fire up, pay attention for a clicking sound when you turn the ignition key. If heard, but the engine does not turn over, the starter motor likely requires replaced. 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 an Audi A5 Sportback

clogged fuel filter car wont start

If you think a fuel system malfunction might be to blame for the no-start, listen closely for the fuel pump noise when you turn the key to “on” before trying to turn over the car. The pump should make a faint humming for a few seconds. If you can’t hear that noise, the fuel pump could be faulty. Difficult starting, stalling, or poor throttle response may also result from a problematic or clogged fuel filter. Both pump and filter issues usually require a professional mechanic to diagnose and fix them properly, often using fuel pressure testing and specialized diagnostic equipment. Later in this article, I detail the best ways to get help from a local Audi mechanic near you. 

How to Repair Electrical or Wiring Issues in an Audi A5 Sportback

fuses to check when car wont start

If you think it’s an electrical problem, first examine the fuses for the ignition system, and swap out any that have blown. If your A5 Sportback starts after this, it was a successful, cheap repair! But if your Audi A5 Sportback refuses to start, even sometimes, the ignition switch itself could be problematic. Dash lights on the dashboard could additionally mean a damaged sensor. These can be intricate issues needing a qualified mechanic to identify and properly repair (see below advice on local mechanics).

How to Prevent Starting Issues in an Audi A5 Sportback

As my dad would say: “An ounce of prevention is worth a pound of cure”. Here’s how to avoid future troubles starting your A5 Sportback:

Regular Maintenance of Your Audi A5 Sportback

Regular maintenance on car to prevent starting issues

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

Drive Your A5 Sportback Frequently

drive regular to avoid car troubles

If your Audi A5 Sportback happens to sit unmoved in the garage or driveway for too long without being driven, the battery can weaken as it is not being recharged by the engine running, through the alternator. Try your best to drive your vehicle regularly to keep a charged battery. If you remember you haven’t driven your car in a while, take it for a short drive around town to ensure there is still a charge left.

Note: Letting the battery entirely run out of charge 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 weird 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 an Audi Mechanic Online

If you have limited time available, or despite putting in real effort on your own, you still can’t get your car to start, consider consulting an Audi mechanic online. It delivers expert guidance in just minutes from the comfort of your living room, and is far less expensive than a tow and diagnosis at the local garage.

Benefits of an Online Audi Mechanic

Happy mechanic repairing car looking at camera

Online Audi mechanics can review your symptoms, past repair history, and circumstances to provide troubleshooting steps tailored to your situation. With so many Audi mechanics available they can help fix nearly any problem, it doesn’t if matter it’s your A5 Sportback that’s having issues or an Audi A5 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 describe the problems you’re having, ask Audi mechanics unlimited questions, and even submit images and videos so you can show the mechanic what you mean. You can talk to them via instant messenger or voice chat, whatever you like. The Audi specialist will diagnose the issue, recommend the best fix for your particular situation, and even guide you on simple repairs 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 – you may be surprised just how easy and stress-free it is.

So feel free to try out our Audi mechanic online chat service and see for yourself!

When and How to Get a Local Audi Mechanics Help

automobile mobile mechanic

When your Audi A5 Sportback 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 A5 Sportback started again ASAP.

So if you think a mobile mechanic is the best solution for you, instead of searching on Google something like  “mechanic come to 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:

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

  1. Visit their official website here: YourMechanic
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Conclusion

In short, when your Audi A5 Sportback won’t start, it can be a major inconvenience. However, grasping what might be causing the issues, being able to troubleshoot them, and knowing what steps are needed in each case, and where to find help if necessary, will be a huge help. Remember that regular maintenance is key to preventing most car issues.

Frequently Asked Questions (FAQs) When a Audi A5 Sportback Won’t Start

Audi A5 Sportback won’t start but lights come on?

If your Audi A5 Sportback‘s lights turn on but it still won’t start, the issue is likely not related to the battery. More than likely there is a problem with the starter motor. Investigate if you hear any clicking sounds when trying to turn the key. If so, the starter motor is attempting to activate but failing. Have a mechanic check over the starter motor – it may need to be repaired or replaced.

Audi A5 Sportback won’t start but has power?

When your Audi A5 Sportback has power (lights, radio etc work) but does not start up, 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 cranking the key – you should hear the fuel pump prime for a few seconds. If not, have a mechanic check the fuel system.

Audi A5 Sportback won’t start but battery is good?

If your Audi A5 Sportback‘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 correctly pinpoint the specific electrical fault and have it repaired.

Audi A5 Sportback won’t start just clicking?

When you turn the key and there’s only a clicking noise but the engine doesn’t crank, the most common cause is a faulty starter motor. The click comes from the starter solenoid trying to engage the starter motor, but the motor itself fails to crank the engine. As the starter motor needs mechanical repair or replacing, seek help from a reliable mechanic to get your Audi A5 Sportback running again.

What if my Audi A5 Sportback won’t start up?

First things first, take a deep breath and don’t panic. Look 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 pinpoint the exact issue, you’ll have to ask for help from a trusted Audi mechanic locally or online.

How do I know if my Audi A5 Sportback won’t start because of a bad battery?

Signs that your Audi’s battery is the issue are, a slow cranking engine, dim headlights, and battery warning symbols lighting up on the dash. You can also check that the battery terminals are clean, corrosion-free, and tightly fastened. If your battery is exhausted it’s probably best to just replace it entirely.

How to prevent my Audi A5 Sportback from failing to start in the future?

To prevent this frustration from happening again, regular upkeep is crucial. This includes oil changes, inspecting the battery and scrubbing its terminals, replacing the fuel filter when required, and getting your Audi A5 Sportback inspected by a mechanic on a regular basis. Also, remember to drive the car frequently so the battery stays charged.

Can I consult an online mechanic if my Audi A5 Sportback fails to start up?

Yes, you can. An online mechanic service like ours can offer instant professional Audi mechanic aid and recommendations, without you having to leave your home. If your vehicle fails to start and is immobile in the parking area, this is particularly useful.

How can services like MechanicAnswer.com provide assistance if my Audi A5 Sportback doesn’t ignite?

We connect you with certified Audi specialists who can supply suggestions specific to your exact quandary. You can brief them about your auto issues, ask unlimited questions as needed, upload images and videos so you can fully detail the issue. The mechanic will be capable to assist, identify the problem, and propose the ideal plan of action and guide you through it.

Interesting Audi A5 Sportback Facts

Did you know that the Audi A5 Sportback is not only a sleek and stylish car, but it also boasts some seriously impressive stats? For starters, it comes equipped with a turbocharged 2.0-liter four-cylinder engine that delivers a whopping 248 horsepower, making it a force to be reckoned with on the road. And if that’s not enough to get your heart racing, how about the fact that it can go from 0 to 60 mph in just 5.7 seconds? That’s faster than you can say “vroom vroom!” Plus, with its spacious interior and advanced technology features, it’s the perfect combination of luxury and performance. So if you’re lucky enough to own an Audi A5 Sportback, you’ve got yourself one seriously cool ride. Now, if only we could figure out why it won’t start…

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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