Mercedes GL-klasse AMG Wont Start? Here’s Quick Solutions to Most Common Problems

Intro

As a certified car mechanic with over two decades of hands on experience, I’ve seen plenty of people struggling when their Mercedes GL-klasse AMG 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 “causes for Mercedes not starting“, I got you covered. My name’s Robby, a certified auto mechanic with over two decades of experience, and in this article, I’ll walk you through the frequent reasons for why your GL-klasse AMG won’t start. I’ll cover all the commonplace offenders so you can pinpoint what’s happening, plus what to do to fix each specific situation. Drawing on my 20 years of training and on the job experience, I’ll offer actionable troubleshooting tips to get your Mercedes GL-klasse AMG fire up and moving as quick as possible!

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Why Won’t My a Mercedes Start?

Mercedes GL-klasse AMG wont start

Before we tackle the laundry list of possible faults and fixes, it’s critical to first gain an understanding of the central issue. When you climb into your Mercedes GL-klasse AMG and realize “it won’t start!”, there could be multiple things causing the difficulties. Perhaps the engine isn’t cranking at all, or possibly it’s cranking but not firing. Or you might hear clicking when you try to start it, but ultimately nothing happens. Each scenario can be a sign of various problems under the hood.

Common Reasons Why Your Mercedes GL-klasse AMG Won’t Start

There are a host of contributing factors why your GL-klasse AMG won’t turn on. The usual suspects cover a weak or drained battery, faulty alternator, starter motor complications, fuel system problems, plus electrical or wiring defects. Every one of these issues can show up differently, needing specific methods of diagnosis and repair to get you back on the open road pronto. All of which, we’ll delve into.

Symptoms of a Mercedes GL-klasse AMG That Won’t Start

Identifying these warning signs will help uncover the core issue. Take for example, when you turn the key or press the start button and you hear it clicking but no ignition, it often indicates a fuel or ignition issue.

Analysis of The Reasons Why Your Mercedes GL-klasse AMG Won’t Start

The initial move in solving the no-start hassle is pinpointing the exact source of the problem. So let’s explore the most common explanations for the GL-klasse AMG struggling to start when you turn the key.

Battery Issues in a Mercedes GL-klasse AMG

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

In the vast majority of situations, the most typical reason a Mercedes GL-klasse AMG 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 necessary electrical juice to start the engine and run all your vehicle’s electrical components. Signs of a struggling battery include sluggish or strained cranking, dim headlights, or a battery alert symbol 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 in a Mercedes GL-klasse AMG

car wont start alternator

The Alternator keeps the battery charged by using engine power while driving. A broken alternator can easily prevent your Mercedes GL-klasse AMG from starting since it cannot recharge the battery, draining it fully so that one day you climb into your beloved Mercedes GL-klasse AMG and it simply can’t start. Clues of a wonky alternator can be a lit up battery or alternator warning symbol on its dash, faint headlights while idling, or a whirring noise from the engine while running.

Starter Motor Failures in a Mercedes GL-klasse AMG

car wont start wont turn over

The starter motor is key to cranking the engine when you try and start up your Mercedes. In the event of starter problems, the engine might not crank, preventing your GL-klasse AMG from starting. Listen out for clicking noises when you turn the key or grinding while trying to start, potentially signaling starter problems.

Fuel System Issues in a Mercedes GL-klasse AMG

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 potentially leaving your GL-klasse AMG unable to start. Your car uses gas uses fuel to combine with oxygen and powers the engine. Issues in fuel delivery like a clogged fuel filter or damaged fuel pump relay may mean the engine is unable to get 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 Mercedes GL-klasse AMG

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 what can go wrong. With older vehicles, common culprits include blown fuses, ignition problems, damaged ignition switches, or non-working sensors. Faulty wiring and electronics like these can all prevent your car from starting. Pay attention to intermittent starting, warning lights, or failure to crank as hints of an underlying electrical issue. Pinpointing and fixing these typically requires a knowledgeable mechanic near you.

Solutions: Let’s Get Your Mercedes GL-klasse AMG 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 try to repair the problem. Here are some tips for common problems we’ve discussed up to this point:

How to Identify and Fix Battery Issues in a Mercedes GL-klasse AMG

car not starting but battery is fine

If you suspect a battery issue is to blame for your Mercedes’s difficulty turning on, first examine the battery terminals Verify they are clean, secure, and properly connected. If the terminals are in fact dirty, try scrubbing them with a sodium bicarbonate(baking soda) and water mixture.

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 GL-klasse AMG 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 swapping out. Suitable replacement batteries for your specific Mercedes 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 GL-klasse AMG’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 Mercedes GL-klasse AMG

Car wont start replace alternator needed

If you think the alternator is the reason your Mercedes GL-klasse AMG 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. If the vehicle dies fairly quickly after that, it’s likely a bad alternator. However, be warned this test can be dangerous and mess up sensitive electronics in your wheels, 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 Mercedes GL-klasse AMG. You find all the information you need about your specific vehicle by searching online for something like “free Mercedes vin lookup owner“, 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 Mercedes GL-klasse AMG

starter motor issues in a ford

If you suspect the starter motor is the reason behind your Mercedes failing to start, be alert for a clicking sound when you turn the key. If present, 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 Mercedes GL-klasse AMG

clogged fuel filter car wont start

If you suspect a fuel system issue might be to blame for the no-start, tune your ears for the fuel pump noise 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 such a noise is not heard, the fuel pump could be defective. Difficult starting, stalling, or poor throttle response may also stem 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 equipment. Later in this article, I detail the best ways to get help from a local Mercedes mechanic near you. 

How to Repair Electrical or Wiring Problems in a Mercedes GL-klasse AMG

fuses to check when car wont start

If you think it’s an wiring issue, first inspect the fuses for the ignition system, and swap out any that have blown. If your GL-klasse AMG starts after this, it was a successful, inexpensive fix! But if your Mercedes GL-klasse AMG 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 professional mechanic to identify and properly repair (see below advice on local mechanics).

How to Prevent Starting Issues in a Mercedes GL-klasse AMG

As grandad would say: “An ounce of prevention is worth a pound of cure”. Here’s how to prevent future troubles starting your GL-klasse AMG:

Routine Upkeep of Your Mercedes GL-klasse AMG

Regular maintenance on car to prevent starting issues

Regular maintenance is critical to avoiding issues, including oil changes, battery checks, cleaning terminals, replacing the fuel filter as needed, and having a mechanic inspect the vehicle routinely. If confused about maintenance for your model, consult a mechanic locally or online for guidance.

Drive Your GL-klasse AMG Regularly

drive regular to avoid car troubles

If your Mercedes GL-klasse AMG happens to sit unmoved in your garage or front yard for too long 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 Mercedes GL-klasse AMG regularly to keep a charged battery. If you remember you haven’t driven your car in a while, take it for a short spin 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.

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 a Mercedes 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 Mercedes 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 Mercedes Mechanic

Happy mechanic repairing car looking at camera

Online Mercedes mechanics can review your symptoms, past repair history, and circumstances to provide troubleshooting steps tailored to your situation. With so many Mercedes mechanics available they can help fix nearly any problem, it doesn’t if matter it’s your GL-klasse AMG that’s having issues or a Mercedes GL-Class 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 issues you’re having, ask Mercedes mechanics endless questions, and even submit images and videos so you can demonstrate to the expert what you mean. You can chat with them via instant messenger or voice chat, whichever you prefer. The Mercedes specialist will diagnose the problem, recommend the top solution for your particular situation, and even guide you on simple repairs step-by-step.

Whether you want an expert second opinion or are simply short on time, online repairs assistance is there when you need it. Give it a try – you may be surprised just how easy and stress-free it is.

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

When and How to Get a Local Mercedes Mechanics Help

automobile mobile mechanic

When your Mercedes GL-klasse AMG 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 GL-klasse AMG started again ASAP.

So if you think a mobile mechanic is the best solution for you, instead of searching on Google something like  “mobile 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 Mercedes GL-klasse AMG doesn’t turn over, it can be a total bummer. However, understanding what might be triggering the issues, being able to diagnose them, and knowing what steps 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 vehicle issues.

Frequently Asked Questions (FAQs) When a Mercedes GL-klasse AMG Won’t Start

Mercedes GL-klasse AMG won’t start but lights come on?

If your Mercedes GL-klasse AMG‘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. Investigate 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 inspect the starter motor – it may need to be fixed or swapped out.

Mercedes GL-klasse AMG won’t start but has power?

When your Mercedes GL-klasse AMG 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. Check around 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.

Mercedes GL-klasse AMG won’t start but battery is fine?

If your Mercedes GL-klasse AMG‘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.

Mercedes GL-klasse AMG 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 crank the engine. As the starter motor needs physical fixing or swapping out, consult with a reliable mechanic to get your Mercedes GL-klasse AMG running again.

What if my Mercedes GL-klasse AMG won’t start up?

First things first, take a deep breath and try to stay calm. 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 consult a trusted Mercedes mechanic locally or online.

How do I know if my Mercedes GL-klasse AMG won’t start because of a bad battery?

Clues that your Mercedes’s battery is the issue include, a slow cranking engine, dim headlights, and battery alerts lighting up on the dash. You can 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 Mercedes GL-klasse AMG from failing to start in the future?

To prevent this nuisance from happening again, scheduled maintenance is essential. This includes oil changes, inspecting the battery and scrubbing its terminals, changing out the fuel filter when required, and getting your Mercedes GL-klasse AMG inspected by a mechanic on a regular basis. Also, make sure to drive the car often so the battery stays charged.

Can I consult an online mechanic if my Mercedes GL-klasse AMG fails to start up?

Yes, you can. An online mechanic service like ours can offer immediate skilled Mercedes mechanic help and advice, without you having to leave your home. This is particularly beneficial if your Mercedes GL-klasse AMG is unable to start and is immobile in the driveway,.

How can websites like MechanicAnswer.com lend a hand if my Mercedes GL-klasse AMG won’t turn on?

We link you with qualified Mercedes specialists who can supply proposals particular to your exact predicament. You can inform them about your auto problems, ask unlimited questions as needed, and even submit images and videos so you can comprehensively demonstrate the problem. The mechanic will be capable to help, identify the issue, and put forward the ideal plan of action and guide you through it.

Interesting Mercedes GL-klasse AMG Facts

Did you know that the Mercedes GL-klasse AMG has an impressive top speed of 174 mph? That’s faster than most sports cars! And get this, it can go from 0 to 60 mph in just 4.5 seconds. That’s like lightning speed! Plus, it has a whopping 577 horsepower, making it one of the most powerful SUVs on the market. But here’s the really cool part – the GL-klasse AMG also has a luxurious interior with all the latest tech features, so you can ride in style while tearing up the road. No wonder you’re itching to get it started and take it for a spin!

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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 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