BMW 8 Series Gran Coupe Wont Start? Here’s Quick Solutions to Most Common Problems

BMW 8 Series Gran Coupe

Intro

As a trained mechanic with over two decades of hands on experience, I’ve helped plenty of people struggling when their BMW 8 Series Gran Coupe 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 “BMW overheated now wont start“, I got you covered. My name’s Robby, a certified auto mechanic with over two decades of experience, and in this article, I’ll explain the most common reasons for why your 8 Series Gran Coupe refuses to start. I’ll detail all the routine suspects so you can identify what’s causing issues, plus what to do to fix each particular problem. Drawing on my 20 years of training and on the job experience, I’ll provide practical troubleshooting tips to get your BMW 8 Series Gran Coupe fire up and moving as soon as possible!

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Why Won’t My a BMW Start?

BMW 8 Series Gran Coupe wont start

Before we dive into the list of possible faults and fixes, it’s key to first gain an understanding of the central issue. When you hop in your BMW 8 Series Gran Coupe and realize “it won’t start!”, there could be multiple things causing the difficulties. Maybe the engine doesn’t turn over whatsoever, or possibly it’s cranking but not firing. Or you might hear clicking when you try to start it, but sadly no ignition occurs. Each scenario can be a sign of various mechanical issues.

Common Reasons Why Your BMW 8 Series Gran Coupe Won’t Start

There are numerous contributing factors why your 8 Series Gran Coupe won’t start up. Typical causes include a weak or drained battery, defective alternator, starter motor failures, fuel system problems, plus electrical or wiring issues. Every one of these issues can present differently, requiring specific methods of troubleshooting and fixing to get you back on the open road pronto. All of which, we’ll delve into.

Symptoms of a BMW 8 Series Gran Coupe That Won’t Start

Identifying these symptoms will lead you to the underlying cause. Take for example, when you turn the key and you hear it turning over yet no start up, it often signifies a fuel or ignition issue.

Analysis of The Reasons Why Your BMW 8 Series Gran Coupe Won’t Start

The initial move in fixing the no-start headache is pinpointing the exact source of the issue. So let’s take a closer look at the most common causes of the 8 Series Gran Coupe struggling to start when you turn the key.

Battery Issues in a BMW 8 Series Gran Coupe

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

In the vast majority of situations, the most typical reason a BMW 8 Series Gran Coupe won’t start comes down to battery troubles. Specifically, a weak or dead battery prevents the engine from turning over. The car’s battery supplies the required power to start the engine and energize all your electronics. Signals of a dying battery entail labored or difficult cranking, dim headlights, or a warning light 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 a BMW 8 Series Gran Coupe

car wont start alternator

The Alternator keeps the battery juiced up by using engine power while driving. A broken alternator can easily prevent your BMW 8 Series Gran Coupe from starting since it cannot recharge the battery, draining it completely so that one day you hop in your beloved BMW 8 Series Gran Coupe and it simply can’t start. Clues of a faulty alternator may include a lit up battery or alternator caution light on the dashboard, dull headlights while idling, or a whirring noise from the engine while running.

Starter Motor Failures in a BMW 8 Series Gran Coupe

car wont start wont turn over

The starter motor is key to turning the engine when you try and start up your BMW. In the event of starter problems, the engine can’t crank, keeping your 8 Series Gran Coupe from starting. Be on the alert for clicking sounds when you turn the key or grinding while trying to start, potentially signaling starter problems.

Fuel System Issues in a BMW 8 Series Gran Coupe

car wont start fuel filter

This isn’t about running out of gas like a silly goose. Rather, it’s issues with the fuel system itself potentially leaving your 8 Series Gran Coupe unable to start up. Your car uses gas uses fuel to mix with air and powers the engine. So problems here like a clogged fuel filter or failing 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 a BMW 8 Series Gran Coupe

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, opening up what can go wrong. With older cars, common culprits include blown fuses, spark issues, broken ignition switches, or non-working sensors. Faulty wiring and electronics like these may prevent your vehicle from starting. Watch for intermittent starting, dashboard alerts, or failure to crank as signs of an underlying electrical problem. Diagnosing and repairing these often needs a skilled mechanic near you.

Solutions: Let’s Get Your BMW 8 Series Gran Coupe Starting Again!

If you think you might know what the issue may be, it’s time to figure out the cause of your car’s starting failure, and then the next step is to attempt to mend the problem. Here are some tips for typical issues we’ve covered thus far:

How to Identify and Fix Battery Issues in a BMW 8 Series Gran Coupe

car not starting but battery is fine

The first step if a battery issue is suspected for the no start is to inspect the battery terminals. Ensure they are clean, 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 8 Series Gran Coupe 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 BMW 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 8 Series Gran Coupe’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 BMW 8 Series Gran Coupe

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), and while it’s running, disconnect the positive terminal of the battery. It’s probably the alternator if the motor dies soon after disconnecting the positive lead. However, be careful this test can be dicey and damage sensitive electronics in your wheels, so seeking advice from a trained 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 BMW 8 Series Gran Coupe. You find all the information you need about your specific vehicle by searching online for something like “lookup BMW by VIN number“, 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 BMW 8 Series Gran Coupe

starter motor issues in a ford

If you wonder if the starter motor is the source of your 8 Series Gran Coupe refusing to start, listen carefully for a clicking noise when you turn the ignition key. If present, but the engine does not turn over, the starter motor likely needs 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 a BMW 8 Series Gran Coupe

clogged fuel filter car wont start

If you think a fuel system malfunction 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 quiet humming for a few seconds. If you can’t hear that noise, the fuel pump could be faulty. Problematic starting, stalling, or poor throttle response may also come from a clogged fuel filter. Filter and pump issues normally require a skilled mechanic to diagnose and fix them properly, often using fuel pressure testing and specialized diagnostic gear. Later in this article, I detail the best ways to get help from a local BMW mechanic near you. 

How to Fix Electrical or Wiring Issues in a BMW 8 Series Gran Coupe

fuses to check when car wont start

If you think it’s an electrical problem, first check the fuses for the ignition system, and replace any that have blown. If your 8 Series Gran Coupe starts after this, it was a successful, cheap repair! But if your BMW 8 Series Gran Coupe refuses to start, even sometimes, the ignition switch itself could be the cause of the issue. Warning lights on the dashboard could additionally mean a faulty component. These can be complex problems needing a qualified mechanic to identify and fix (see below advice on local mechanics).

How to Prevent Starting Issues in a BMW 8 Series Gran Coupe

As grandfather would say: “An ounce of prevention is worth a pound of cure”. Here’s how to avoid future troubles starting your 8 Series Gran Coupe:

Regular Upkeep of Your BMW 8 Series Gran Coupe

Regular maintenance on car to prevent starting issues

Regular maintenance is essential to avoiding issues, including oil changes, battery checks, cleaning terminals, replacing the fuel filter as needed, and having a mechanic check over the vehicle regularly. If unsure about maintenance for your model, ask a mechanic locally or online for clarification.

Drive Your 8 Series Gran Coupe Frequently

drive regular to avoid car troubles

If your BMW 8 Series Gran Coupe happens to sit unmoved in the garage or driveway for extended times without being driven, the battery can decrease as it is not being charged up 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 brief drive around town to ensure there is still a charge left.

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

Pay Attention to 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 a BMW 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 BMW mechanic online. It delivers quick professional advice from the comfort of home, and is far less expensive than a tow and diagnosis at the local garage.

Advantages of an Online BMW 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 BMW mechanics available they can help fix nearly any problem, it doesn’t if matter it’s your 8 Series Gran Coupe that’s having issues or a BMW Z8 wont start, the online mechanics can help sort anything in no time. And with many household budgets tighter these days, the convenience and affordability of online mechanics help, keep your wallet happy too.

You can describe the problems you’re having, ask BMW mechanics unlimited questions, and even submit images and videos so you can demonstrate to the mechanic what you mean. You can talk to them via instant messenger or phone call, whichever you prefer. The BMW mechanic will diagnose the issue, recommend the best fix 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 – you may be surprised just how easy and stress-free it is.

So feel free to try out our BMW help chat service and see for yourself!

When and How to Get a Local BMW Mechanics Help

automobile mobile mechanic

When your BMW 8 Series Gran Coupe 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 8 Series Gran Coupe started again ASAP.

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

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Conclusion

In short, when your BMW 8 Series Gran Coupe won’t start, it can be a major inconvenience. However, understanding what might be causing the problems, being able to diagnose them, and knowing what actions are needed in each case, and where to find help if needed, will be a huge help. Remember that routine care is key to preventing most car issues.

Frequently Asked Questions (FAQs) When a BMW 8 Series Gran Coupe Won’t Start

BMW 8 Series Gran Coupe won’t start but lights turn on?

If your BMW 8 Series Gran Coupe‘s lights illuminate 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. Check to see if you hear any clicking sounds when attempting to crank the key. If so, the starter motor is trying to engage but failing. Get a mechanic check over the starter motor – it may need to be fixed or swapped out.

BMW 8 Series Gran Coupe won’t start but has power?

When your BMW 8 Series Gran Coupe 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 cranking the key – you should hear the fuel pump prime for a few seconds. If not, get a mechanic check the fuel system.

BMW 8 Series Gran Coupe won’t start but battery is fine?

If your BMW 8 Series Gran Coupe‘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.

BMW 8 Series Gran Coupe won’t start just clicking?

When you turn the key and there’s only a clicking noise but the engine fails to turn over, 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 spin up the engine. As the starter motor needs physical fixing or swapping out, seek help from a reliable mechanic to get your BMW 8 Series Gran Coupe running again.

What if my BMW 8 Series Gran Coupe 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. Most likely the culprit is one of the common problems we will talk about here. If you still can’t identify the exact issue, you’ll have to ask for help from a trusted BMW mechanic locally or online.

Determine if my BMW 8 Series Gran Coupe won’t start because of a bad battery?

Signs that your BMW’s battery is the issue are, a slow cranking engine, dim front lights, and battery alerts lighting up on the dash. You can also make sure the battery terminals are clean, corrosion-free, and tightly fastened. If your battery is worn out it’s probably best to just replace it fully.

How to prevent my BMW 8 Series Gran Coupe from failing to start in the future?

To prevent this nuisance from happening again, routine servicing is crucial. This includes oil changes, checking the battery and cleaning its terminals, replacing the fuel filter when needed, and getting your BMW 8 Series Gran Coupe checked out by a mechanic on a regular basis. Additionally, make sure to drive the car often so the battery stays charged.

Can I consult an online mechanic if my BMW 8 Series Gran Coupe fails to start up?

Yes, you can. An online mechanic service like ours can offer instant professional BMW mechanic assistance and suggestions, without you having to leave your home. This is especially beneficial if your BMW 8 Series Gran Coupe is unable to start and is stuck in the driveway,.

In what ways can services like MechanicAnswer.com lend a hand if my BMW 8 Series Gran Coupe won’t turn on?

We pair you with certified BMW technicians who can supply recommendations specific to your unique quandary. You can update them about your auto troubles, ask unlimited questions as needed, and even submit videos or pictures so you can show in detail the problem. The mechanic will be capable to help, diagnose the issue, and put forward the ideal plan of action and walk you through it.

Interesting BMW 8 Series Gran Coupe Facts

Did you know that the BMW 8 Series Gran Coupe is not only a luxurious and stylish vehicle, but it also boasts some seriously impressive performance stats? With a top speed of up to 155 mph and the ability to go from 0 to 60 mph in just 3.7 seconds, this car is a true powerhouse on the road. And if that’s not enough to impress you, how about the fact that it comes with a state-of-the-art infotainment system and a panoramic sunroof that lets you soak in the scenery as you cruise along? Plus, with its sleek and aerodynamic design, the 8 Series Gran Coupe is sure to turn heads wherever you go. So, if you’re currently sitting in your driveway unable to start your BMW 8 Series Gran Coupe, just think about all the amazing features and capabilities that make it such a standout vehicle. You’ll be back on the road in no time, enjoying everything this incredible car has to offer!

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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