Mercedes GLC Wont Start? Here’s Quick Solutions to Most Common Problems

Intro

As a skilled auto mechanic with over 20 years of hands on experience, I’ve seen plenty of people battling when their Mercedes GLC 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 worry, you’ve come to the right place, no need to keep googling searches like “Mercedes not starting causes“, I got you covered. My name’s Robby, a certified auto mechanic with over two decades of experience, and in this guide, I’ll explain the most common causes for why your GLC can’t start. I’ll discuss all the routine suspects so you can pinpoint what’s going on, plus what to do to resolve each particular problem. Drawing on my two decades of training and on the job experience, I’ll supply practical diagnostic pointers to get your Mercedes GLC fire up and moving as quick as possible!

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So Why Won’t My a Mercedes Start?

Mercedes GLC wont start

Before we tackle the laundry list of possible faults and fixes, it’s key to first get on the same page of the central issue. When you hop in your Mercedes GLC and discover “it won’t start!”, there could be multiple things causing the difficulties. Maybe the engine isn’t cranking at all, or maybe it’s turning over partially yet not igniting. 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 different mechanical issues.

Common Reasons Why Your Mercedes GLC Won’t Start

There are many contributing factors why your GLC won’t turn on. Typical causes cover a dead or weak battery, defective alternator, starter motor issues, fuel system snags, plus electrical or wiring malfunctions. Each of these concerns can present differently, requiring specific methods of diagnosis and repair to get you driving again as quick as possible. All of which, we’ll delve into.

Symptoms of a Mercedes GLC That Won’t Start

Spotting these symptoms will help uncover the core issue. For instance, when you turn the key and you hear it clicking but no ignition, it often signifies a problem with either fuel delivery or ignition issues.

Analysis of The Reasons Why Your Mercedes GLC Won’t Start

The initial move in remedying the no-start hassle is understanding the specific cause of the trouble. So let’s take a closer look at the most frequent explanations for the GLC struggling to start when you turn the key.

Car Battery Issues Preventing Your Mercedes GLC From Starting

Car wont start battery is good

In the majority of cases, the most common reason a Mercedes GLC won’t start comes down to battery troubles. Specifically, a drained or weak battery prevents the engine from turning over. The car’s battery supplies the necessary electrical juice to ignite the engine and run all your electronics. Symptoms of a failing battery include sluggish or strained cranking, faint 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 Can Prevent Your Mercedes GLC Starting

car wont start alternator

The Alternator keeps the battery juiced up by harnessing engine power while driving. A broken alternator can easily prevent your Mercedes GLC from starting since it cannot recharge the battery, draining it fully so that one day you hop in your ride and it refuses to start up. Symptoms 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 Mercedes GLC

car wont start wont turn over

The starter motor is key to turning the engine when you go to start up your Mercedes. Should the starter fail, the engine may fail to crank, keeping your GLC from starting. Listen for clicking noises when you turn the key or grinding during cranking, which could indicate starter issues.

Fuel System Issues Can Prevent a Mercedes GLC 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 GLC unable to start. Your Mercedes GLC uses gas to mix with air 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 requires for ignition. 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 Mercedes GLC 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 today’s cars depend greatly on electronics, increasing the number of things that can go wrong. Even in older cars, common culprits include blown fuses, spark issues, damaged ignition switches, or non-working sensors. Faulty wiring and electronics like these may prevent your Mercedes GLC from starting. Be on the lookout for intermittent starting, dashboard alerts, or failure to crank as signs of an underlying electrical issue. Diagnosing and repairing these typically requires an experienced mechanic near you.

Solutions: Let’s Get Your Mercedes GLC 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 logical next move is to try to mend 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 Mercedes GLC

car not starting but battery is fine

If you suspect a battery issue is to blame for your Mercedes’s trouble turning on, first inspect the battery terminals Ensure they are corrosion-free, tight, and properly connected. If the terminals are in fact dirty, try cleaning 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, if the battery has aged or lacks capacity, replacing it will be necessary. Otherwise, even sufficiently charging it to start your GLC 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 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 GLC’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 GLC

Car wont start replace alternator needed

If you suspect the alternator is causing your vehicle to have issues starting, you can test it yourself. If you can temporarily get the vehicle running (you may need a jump start), with the engine on, disconnect the positive battery terminal. It’s probably the alternator if the motor dies soon after disconnecting the positive lead. However, be cautious this test can be risky and damage sensitive electronics in your ride, so seeking advice from a qualified 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 Mercedes GLC. You find all the information you need about your specific vehicle by searching online for something like “Mercedes vin lookup owner free“, 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 GLC

starter motor issues in a ford

If you think the starter motor is the reason behind your Mercedes not turning over, keep an ear out for a clicking noise when you turn the key. If heard, but the engine does not turn over, the starter motor likely requires 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 GLC

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 flip the key to “on” before trying to turn over the car. The pump should make 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 blocked fuel filter. Filter and pump issues usually require a professional mechanic to inspect and repair them properly, often using fuel pressure testing and precise diagnostic gear. 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 GLC

fuses to check when car wont start

If you think it’s an electrical circuitry problem, first examine the fuses for the ignition system, and swap out any that have blown. If your GLC starts after this, it was an effective, inexpensive repair! However, if it still won’t 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 professional mechanic to identify and properly repair (see below advice on local mechanics).

Preventive Steps

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

Routine Upkeep of Your Mercedes GLC

Regular maintenance on car to prevent starting issues

Routine maintenance is critical 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 routinely. If unsure about maintenance for your model, ask a mechanic locally or online for guidance.

Drive Your GLC Frequently

drive regular to avoid car troubles

If your Mercedes GLC happens to sit unmoved in your garage or front yard for extended times without being driven, the battery can reduce as it is not being charged up by the engine running, through the alternator. Try your best to drive your Mercedes GLC 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 completely 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 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 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 home, and is far less expensive than a tow and diagnosis at the local garage.

Advantages 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 GLC that’s having issues or a Mercedes GLB-Class won’t 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 issues you’re having, ask Mercedes mechanics endless questions, and even submit photos and videos so you can show the expert what you mean. You can connect with them via online chat or voice chat, whichever you prefer. The Mercedes specialist will ID the issue, advise the top solution for your specific situation, and even walk you through 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 ask a Mercedes mechanic for free service and see for yourself!

When and How to Get a Local Mercedes Mechanics Help

automobile mobile mechanic

When your Mercedes GLC 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 GLC 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 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:

  • 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 Mercedes GLC doesn’t turn over, it can be a major inconvenience. However, understanding what might be causing the issues, being able to troubleshoot them, and knowing what actions are needed in each case, and where to get help if necessary, will be a huge help. Keep in mind that routine maintenance is vital to avoiding most car problems.

Frequently Asked Questions (FAQs)

What if my Mercedes GLC 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 locate the exact issue, you’ll have to ask for help from a trusted Mercedes mechanic locally or online.

How do I know if my Mercedes GLC won’t start because of a bad battery?

Signs that your Mercedes’s battery is the issue include, a slow cranking engine, dim front lights, and battery alerts lighting up on the dash. 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 completely.

How to prevent my Mercedes GLC from failing to start in the future?

To prevent this nuisance from repeating, routine servicing is crucial. This includes oil changes, inspecting the battery and scrubbing its terminals, replacing the fuel filter when necessary, and getting your Mercedes GLC checked out by a mechanic frequently. Additionally, make sure to drive the car often so the battery stays charged.

Can I consult an online mechanic if my Mercedes GLC fails to start up?

Yes, you can. An online mechanic service like ours can offer instant professional Mercedes mechanic aid and suggestions, without you having to leave your home. {This is especially helpful if your Mercedes GLC is unable to start and is immobile in the driveway,.

In what ways can websites like MechanicAnswer.com lend a hand if my Mercedes GLC won’t turn on?

We pair you with qualified Mercedes specialists who can provide proposals tailored to your unique quandary. You can brief them about your auto issues, ask as many questions as needed, and even submit videos or pictures so you can fully detail the issue. The specialist auto mechanic will be capable to assist, pinpoint the problem, and recommend the ideal remedy and talk you through it.

Interesting Mercedes GLC Facts

Did you know that the Mercedes GLC has a feature called “Car-to-X Communication” that allows it to communicate with other vehicles and infrastructure? It’s like the car is part of a secret club, exchanging information about road conditions and potential hazards with other members. And get this – the GLC also has a “Pre-Safe Sound” feature that emits a pink noise to pre-trigger the natural defense mechanisms in your ears, protecting your hearing in the event of a collision. It’s like the car is looking out for you in ways you never even knew were possible. Plus, the Mercedes GLC has a stunning design that combines luxury and practicality, making it the perfect vehicle for any adventure. So, while you may be frustrated that your GLC won’t start right now, just remember all the amazing features that make it worth the wait.

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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