As a skilled auto mechanic with over 20 years of experience, I’ve seen plenty of people battling when their BMW 6 Series Won’t Start. And let’s be honest, not being able to start your car when you need to drive is extremely annoying.
But keep your chin up, you’ve come to the right place, no need to keep googling searches like “BMW starts after jump but wont start again“, I got you covered. My name’s Robby, a certified auto mechanic with over two decades of experience, and in this guide, I’ll walk you through the most common explanations for why your 6 Series struggles to start. I’ll discuss all the routine suspects so you can identify what’s going on, plus what to do to fix each particular problem. Drawing on my 20 years of firsthand experience, I’ll provide usable diagnostic pointers to get your BMW 6 Series fire up and moving ASAP!
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Why Won’t My a BMW Start?
Before we tackle the laundry list of possible issues and solutions, it’s critical to first gain an understanding of the core problem. When you climb into your BMW 6 Series and realize “it won’t start!”, there could be several components causing the difficulties. 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. All these situations can be a sign of various mechanical issues.
Common Reasons Why Your BMW 6 Series Won’t Start
There are numerous culprits as to why your 6 Series won’t start. Typical causes cover a dead or weak battery, faulty alternator, starter motor failures, fuel system problems, plus electrical or wiring defects. Each of these concerns can present differently, needing specific methods of troubleshooting and fixing to get you driving again as quick as possible. All of which, we’ll delve into.
Symptoms of a BMW 6 Series That Won’t Start
Spotting these symptoms will guide you toward the main 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 signifies a problem with either fuel delivery or ignition issues.
Analysis of The Reasons Why Your BMW 6 Series Won’t Start
The initial move in fixing the no-start nuisance is identifying the exact origin of the problem. So let’s explore the most frequent reasons behind the 6 Series struggling to start when you turn the key.
Battery Issues in a BMW 6 Series
In the vast majority of situations, the most typical reason a BMW 6 Series 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 start the engine and activate all your vehicle’s electrical components. Signals of a failing battery include sluggish or strained cranking, dim headlights, or a battery alert symbol aglow 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 BMW 6 Series
The Alternator keeps the battery charged by harnessing engine power while driving. A worn out alternator can easily prevent your BMW 6 Series from starting since it fails to recharge the battery, depleting it completely so that one day you climb into your beloved BMW 6 Series and it refuses to start up. Clues of a faulty alternator can be a lit up battery or alternator caution light on the dash, dull headlights while idling, or a grinding noise from the engine while running.
Starter Motor Failures in a BMW 6 Series
The starter is crucial for cranking the engine when you turn the key to start your BMW. If the starter is faulty, the engine might not crank, keeping your 6 Series from starting. Pay attention to clicking sounds when you turn the key or grinding during cranking, potentially signaling starter issues.
Fuel System Issues in a BMW 6 Series
We’re not talking about running out of gas like a silly goose. Instead, it’s issues with the fuel system itself potentially leaving your 6 Series unable to start. Your BMW 6 Series uses gas to combine with oxygen and powers 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 consider a fuel injector cleaner like Red Line to clean them out and improve starting.
Electrical System or Wiring Problems in a BMW 6 Series
Ok, well yes that image is a joke, but I want to emphasize today’s cars depend greatly on electronics, opening up the number of things that can go wrong. With older models, common culprits include blown fuses, ignition problems, damaged ignition switches, or non-working sensors. Electrical issues and electronics like these can all prevent your car from starting. Watch for intermittent starting, warning lights, or failure to crank as signs of an underlying electrical issue. Pinpointing and fixing these typically requires a knowledgeable mechanic near you.
Solutions: Let’s Get Your BMW 6 Series 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 next step is to attempt to fix the issue. Here’s advice for the frequent problems we’ve talked about already:
How to Identify and Fix Battery Issues in a BMW 6 Series
The first step if a battery issue is suspected for the no start is to have a look at the battery terminals. Make sure they are clean, tight, and properly connected. Should you find corrosion 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:
- With the help of another vehicle and jumper cables to jump-start your BMW’s battery.
- Use a car battery charger that you can plug into a socket to charge it up.
- Use a portable car battery charger you can take with you on the go, so you are never left stranded when on the move.
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 6 Series 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.
If charging your 6 Series’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 6 Series
If you think the alternator is the reason your BMW 6 Series won’t start, a test can confirm. If you can temporarily get the vehicle running (you may need a jump start), and while it’s running, disconnect the positive terminal of your car’s battery. If the car dies right quickly after that, it’s likely a bad alternator. However, be cautious this test can be dicey and damage delicate electronics in your motor, so it’s best to talk to a professional mechanic in your town or online first since this test risks messing up the delicate electronic gizmos in your car.
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 6 Series. You find all the information you need about your specific vehicle by searching online for something like “BMW VIN history“, 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 6 Series
If you think the starter motor might be causing your BMW 6 Series 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 needs 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 BMW 6 Series
If you suspect a fuel system issue might be to blame for the no-start, listen closely 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. Should no such quiet hum be audible, 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 need a professional mechanic to diagnose and fix them properly, often involving fuel pressure testing and precise diagnostic gear. Later in this article, I detail the best ways to get help from a local BMW mechanic near you.
How to Repair Electrical or Wiring Issues in a BMW 6 Series
If you think it’s an wiring problem, first inspect the fuses for the ignition system, and replace any that have blown. If your 6 Series starts after this, it was a successful, cheap fix! But if your BMW 6 Series refuses to start, even sometimes, the ignition switch itself could be faulty. Dash lights on the dashboard could also 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 6 Series
As grandad used to say: “An ounce of prevention is worth a pound of cure”. Here’s how to prevent future problems starting your 6 Series:
Regular Upkeep of Your BMW 6 Series
Routine maintenance is key to avoiding issues, including oil changes, checking the battery, cleaning terminals, replacing the fuel filter as needed, and having a mechanic inspect the car routinely. If unsure about maintenance for your model, consult a mechanic locally or online for clarification.
Drive Your 6 Series Regularly
If your BMW 6 Series happens to sit motionless in your 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 car regularly to keep a charged battery. If you remember you haven’t driven your car in a while, take it for a quick drive 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.
Pay Attention to Warning Signs
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 you have limited time available, or you gave fixing the no start yourself an honest effort but with no luck, consider consulting a BMW mechanic online. It delivers quick professional advice 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 BMW Mechanic
Online BMW mechanics can review your symptoms, past repair history, and circumstances to provide troubleshooting steps tailored to your situation. With so many BMW mechanics available they can help fix nearly any problem, it doesn’t if matter it’s your 6 Series that’s having issues or a BMW 5 Series 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 explain the problems you’re having, ask BMW mechanics unlimited questions, and even upload pics and videos so you can show the expert what you mean. You can chat with them via online chat or voice chat, whatever you like. The BMW specialist will ID the problem, advise the top solution for your specific situation, and even guide you on basic 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 BMW specialist mechanic service and see for yourself!
When and How to Get a Local BMW Mechanics Help
When your BMW 6 Series 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 6 Series started again ASAP.
So if you think a mobile mechanic is the best solution for you, instead of searching on Google something like “at home mechanic“, the best in the USA that also covers most towns is YourMechanic, I 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.
- Visit their official website here: YourMechanic
- Get an instant free quote for what you need
- Book a time and place for the mechanic to come to you
- The mechanic will arrive in a fully stocked repair van and repair it right in front of you
- Pay when the job is completed.
Super easy, super reliable, super convenient, and highly recommended.
In short, when your BMW 6 Series doesn’t turn over, it can be a major inconvenience. However, grasping what might be triggering the problems, being able to troubleshoot them, and knowing what steps are needed in each case, and where to find help if needed, will be a huge help. Keep in mind that routine care is key to avoiding most car problems.
Frequently Asked Questions (FAQs) When a BMW 6 Series Won’t Start
BMW 6 Series won’t start but lights come on?
If your BMW 6 Series‘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 engine starter. Investigate if you hear any clicking noises when attempting to crank the key. If so, the starter motor is trying to engage but failing. Have a mechanic inspect the starter motor – it may need to be fixed or swapped out.
BMW 6 Series won’t start but has power?
When your BMW 6 Series 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. Check around 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.
BMW 6 Series won’t start but battery is fine?
If your BMW 6 Series‘s battery checks out OK and is fully charged, but the car still refuses to start, the underlying cause is likely electrical. Potential culprits 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 6 Series won’t start just clicking?
When you turn the key and just hear clicking 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 mechanical repair or replacing, consult with a reliable mechanic to get your BMW 6 Series running again.
What if my BMW 6 Series 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 will talk about here. If you still can’t locate the exact issue, you’ll have to ask for help from a trusted BMW mechanic locally or online.
How do I know if my BMW 6 Series won’t start because of a bad battery?
Signs that your BMW’s battery is the issue include, a slow cranking engine, dim headlights, and battery warning symbols lighting up on the dash. You can also make sure the battery terminals are clean, corrosion-free, and tightly fastened. If your battery is exhausted it’s probably best to just replace it completely.
How to prevent my BMW 6 Series from failing to start in the future?
To prevent this frustration from happening again, regular servicing is crucial. This includes oil changes, inspecting the battery and cleaning its terminals, replacing the fuel filter when needed, and getting your BMW 6 Series inspected by a mechanic on a regular basis. Additionally, be diligent about drive the car regularly so the battery stays charged.
Can I consult an online mechanic if my BMW 6 Series fails to start up?
Yes, you can. An online mechanic service like ours can offer instant professional BMW mechanic aid and advice, without you having to leave your residence. If your vehicle fails to start and is immobile in the driveway, this is particularly useful.
How can websites like MechanicAnswer.com provide assistance if my BMW 6 Series fails to start?
We pair you with certified BMW technicians who can offer recommendations tailored to your unique predicament. You can inform them about your auto issues, 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 aid, identify the problem, and recommend the best remedy and walk you through it.
Interesting BMW 6 Series Facts
Did you know that the BMW 6 Series has a top speed of 155 mph? That’s faster than a cheetah! And get this – the 6 Series comes with a Bang & Olufsen sound system that has 16 speakers for the ultimate listening experience. It’s like having a concert in your car! Plus, the 6 Series has a sleek and stylish design that turns heads wherever you go. And if you’re into technology, you’ll love the fact that it comes with a heads-up display that projects important information onto the windshield so you can keep your eyes on the road. It’s like something out of a sci-fi movie! So, if you’re feeling down about your car not starting, just remember all the amazing features that make the BMW 6 Series so special. You’ll be back on the road in no time, enjoying all the perks of this incredible vehicle.