BMW M5 Wont Start? Here’s Quick Solutions to Most Common Problems

Introduction

As a trained mechanic with over two decades of experience, I’ve seen plenty of people battling when their BMW M5 Won’t Start. And let’s face it, not being able to start your car when you need to drive straight up sucks.

But don’t lose hope, you’ve come to the right place, no need to keep googling searches like “BMW overheated cranks but 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 explanations for why your M5 won’t start. I’ll detail all the commonplace suspects so you can pinpoint what’s happening, plus what to do to resolve each specific problem. Drawing on my two decades of personal experience, I’ll provide practical repair advice to get your BMW M5 fire up and moving as soon as possible!

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So Why Won’t My a BMW Start?

BMW M5 wont start

Before we dive into the list of possible issues and solutions, it’s vital to first get on the same page of the central issue. When you climb into your BMW M5 and realize “it won’t start!”, there could be several things causing the headaches. Maybe the engine doesn’t turn over whatsoever, or maybe it’s cranking but not firing. Or you might notice clicking sounds when you try to start it, but ultimately nothing happens. All these situations can signal various problems under the hood.

Common Reasons Why Your BMW M5 Won’t Start

There are many reasons why your M5 won’t start. Typical causes cover a dead or weak battery, broken alternator, starter motor issues, fuel system problems, plus electrical or wiring issues. Every one of these concerns can present differently, requiring specific methods of diagnosis and repair to get you back on the open road ASAP. All of which, we’ll delve into.

Symptoms of a BMW M5 That Won’t Start

Spotting these red flags will lead you to the core cause. 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 BMW M5 Won’t Start

The initial move in remedying the no-start hassle is understanding the precise origin of the issue. So let’s explore the most common explanations for the M5 not starting when you turn the key.

Car Battery Issues Preventing Your BMW M5 From Starting

Car wont start battery is good

In the vast majority of situations, the most typical reason a BMW M5 won’t start comes down to battery troubles. Specifically, a weak or dead battery prevents the engine from turning over. The car’s battery provides the required power to start the engine and energize all your vehicle’s electrical components. Symptoms of a struggling battery include sluggish or strained cranking, dim headlights, or a warning light illuminated 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 Can Prevent Your BMW M5 Starting

car wont start alternator

The Alternator keeps the battery juiced up by using engine power while driving. A worn out alternator can easily prevent your BMW M5 from starting since it fails to recharge the battery, draining it completely so that one day you hop in your ride and it simply can’t start. Clues of a malfunctioning alternator can be a lit up battery or alternator caution light on your dash, dull headlights while idling, or a grinding noise from the engine while running.

Starter Motor Failures in a BMW M5

car wont start wont turn over

The starter motor is key to cranking the engine when you go to start up your BMW. In the event of starter problems, the engine may fail to crank, keeping your M5 from starting. Listen for clicking noises when you turn the key or grinding during cranking, possibly meaning starter problems.

Fuel System Issues Can Prevent a BMW M5 From Starting

car wont start fuel filter

This isn’t about running out of gas like a silly goose. Instead, it’s problems in the fuel system itself that could leave your M5 unable to drive. Your BMW M5 uses fuel to combine with oxygen and runs the engine. So problems here like a clogged fuel filter or failing fuel pump relay may mean the engine lacking the fuel it needs to start. Fuel injectors can also get clogged over time, so try a fuel injector cleaner like Red Line to clean them out and improve starting.

Electrical System or Wiring Problems in a BMW M5 Can Prevent it From Starting

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 what can go wrong. Even in older vehicles, the usual suspects include blown fuses, spark issues, faulty ignition switches, or non-working sensors. Faulty wiring and electronics like these can all prevent your car from starting. Be on the lookout for your car only starting sometimes, dashboard alerts, or failure to crank as indicators pointing to an underlying electrical problem. Pinpointing and fixing these typically requires a knowledgeable mechanic near you.

Solutions: Let’s Get Your BMW M5 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 starting failure, and then the logical next move is to try to repair the issue. Here are some tips for common problems we’ve discussed up to this point:

How to Identify and Fix Battery Issues in a BMW M5

car not starting but battery is fine

If you think a battery issue is to blame for your BMW’s difficulty cranking, first examine the battery terminals Make sure 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 aged, dead or lacks capacity. Otherwise, even sufficiently charging it to start your M5 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 swapping out. 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 M5’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 M5

Car wont start replace alternator needed

If you think the alternator is the reason your BMW M5 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. If the car dies fairly quickly after that, it’s likely a bad alternator. Keep in mind though this test can be dicey and mess up sensitive electronics in your motor, so chatting with a trained mechanic locally or online is best prior to 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 M5. You find all the information you need about your specific vehicle by searching online for something like “search up BMW 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 M5

starter motor issues in a ford

If you believe the starter motor might be causing your BMW M5 to not fire up, pay attention for a clicking sound when you turn the ignition key. If present, but the engine does not turn over, the starter motor likely needs replacement. 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 M5

clogged fuel filter car wont start

If you think a fuel system issue might be causing the no-start, tune your ears for the fuel pump hum when you flip the key to “on” before attempting to start 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 defective. Problematic starting, stalling, or poor throttle response may also result from a problematic or clogged fuel filter. Both pump and filter issues normally require a professional 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 Problems in a BMW M5

fuses to check when car wont start

If you suspect it’s an wiring issue, first examine the fuses for the ignition system, and swap out any that have blown. If your M5 starts after this, it was a successful, inexpensive fix! But if your BMW M5 refuses to 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 identify and properly repair (see below advice on local mechanics).

Preventive Steps

As granpa used to say: “An ounce of prevention is worth a pound of cure”. Here’s how to prevent future issues starting your M5:

Regular Maintenance of Your BMW M5

Regular maintenance on car to prevent starting issues

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

Drive Your M5 Frequently

drive regular to avoid car troubles

If your BMW M5 happens to sit unmoved in the garage or driveway for too long without being driven, the battery can deplete as it is not being charged up by the engine running, through the alternator. Try your best to use your vehicle regularly to maintain a charged battery. If you remember you have not driven your car in a while, take it for a quick spin around town to ensure there is still a charge left.

Note: Letting the battery entirely 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 irregular things like unusual noises, 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 you gave fixing the no start yourself an honest effort but with no luck, consider consulting a BMW 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.

Benefits 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 M5 that’s having issues or a BMW M4 wont 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 BMW mechanics endless questions, and even submit photos and videos so you can demonstrate to the mechanic what you mean. You can talk to them via instant messenger or phone call, whatever you like. The BMW specialist will ID the problem, advise the top solution for your particular situation, and even walk you through simple 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 mechanic live chat service and see for yourself!

When and How to Get a Local BMW Mechanics Help

automobile mobile mechanic

When your BMW M5 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 M5 started again ASAP.

So if you think a mobile mechanic is the best solution for you, instead of searching on Google something like  “auto mechanic quotes“, 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
  • They come to you, which is super convenient
  • 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 BMW M5 doesn’t turn over, it can be a major inconvenience. However, grasping what might be causing the issues, being able to troubleshoot them, and knowing what steps are required in each case, and where to find help if needed, will be a huge help. Keep in mind that routine care is vital to preventing most vehicle problems.

Frequently Asked Questions (FAQs)

What if my BMW M5 won’t start up?

First things first, take a deep breath and try to stay calm. 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 identify the exact issue, you’ll have to ask for help from a trusted BMW mechanic locally or online.

Determine if my BMW M5 won’t start because of a bad battery?

Clues that your BMW’s battery is the issue include, a slow cranking engine, dim headlights, and battery warning symbols lighting up on the dash. 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 entirely.

How to prevent my BMW M5 from failing to start in the future?

To prevent this nuisance from happening again, scheduled upkeep is crucial. This includes oil changes, checking the battery and scrubbing its terminals, replacing the fuel filter when necessary, and getting your BMW M5 checked out 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 BMW M5 fails to start up?

Yes, you can. An online mechanic service like ours can offer immediate skilled BMW mechanic aid and suggestions, without you having to leave your house. {If your vehicle fails to start and is immobile in the parking area, this is especially helpful.

How can platforms like MechanicAnswer.com be of service if my BMW M5 fails to start?

We connect you with licensed BMW mechanics who can offer proposals particular to your individual quandary. You can update them about your vehicle issues, ask as many questions as needed, upload videos or pictures so you can fully detail the issue. The specialist auto mechanic will be capable to assist, pinpoint the fault, and propose the best remedy and talk you through it.

Interesting BMW M5 Facts

Did you know that the BMW M5 has a hidden ‘M’ button on the steering wheel that unleashes the full power of the car? It’s like a secret turbo boost for your everyday commute! And get this – the M5’s engine is hand-built by a single engineer in the BMW factory in Germany, giving it a personal touch that you just can’t find in other cars. Plus, the M5 has a special ‘M xDrive’ system that allows you to switch between all-wheel drive and rear-wheel drive, giving you the best of both worlds when it comes to performance and handling. It’s like having a supercar and a luxury sedan all in one! No wonder you’re itching to get it started and hit the road – the M5 is packed with so many cool features and capabilities that it’s impossible not to be excited about driving it.

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  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.

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