Mercedes A-Class Wont Start? Here’s Quick Solutions to Most Common Problems

mercedes, a200, car

Intro

As a certified mechanic with over 20 years of experience, I’ve helped plenty of people struggling when their Mercedes A-Class 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 problems won t 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 frequent reasons for why your A-Class struggles to start. I’ll cover all the commonplace suspects so you can diagnose what’s going on, plus what to do to fix each specific problem. Drawing on my two decades of firsthand experience, I’ll offer usable repair advice to get your Mercedes A-Class fire up and moving as soon as possible!

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So Why Won’t My a Mercedes Start?

Mercedes A-Class wont start

Before we dive into the list of possible issues and solutions, it’s key to first get on the same page of the central issue. When you hop in your Mercedes A-Class and realize “it won’t start!”, there could be multiple things causing the headaches. 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. Each scenario can indicate different problems under the hood.

Common Reasons Why Your Mercedes A-Class Won’t Start

There are a host of reasons why your A-Class won’t fire up. The usual suspects cover a weak or drained battery, faulty alternator, starter motor complications, fuel system problems, plus electrical or wiring issues. Each of these issues can present differently, requiring specific methods of troubleshooting and fixing to get you driving again pronto. All of which, we’ll delve into.

Symptoms of a Mercedes A-Class That Won’t Start

Recognizing these red flags will guide you toward the main mechanical problem. For instance, when you turn the key 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 Mercedes A-Class Won’t Start

The first step in remedying the no-start hassle is pinpointing the exact source of the issue. So let’s explore the most frequent reasons behind the A-Class struggling to start when you turn the key.

Car Battery Issues Preventing Your Mercedes A-Class From Starting

Car wont start battery is good

In the majority of cases, the most common reason a Mercedes A-Class 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 failing battery entail labored or difficult 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 Can Prevent Your Mercedes A-Class Starting

car wont start alternator

The Alternator keeps the battery juiced up by harnessing engine power while driving. A busted alternator can easily stop your Mercedes A-Class from starting since it cannot recharge the battery, depleting it fully so that one day you climb into your ride and it simply can’t start. Signs of a malfunctioning alternator may include an illuminated battery or alternator caution light on your dash, dim headlights while idling, or a whirring noise from the engine while running.

Starter Motor Failures in a Mercedes A-Class

car wont start wont turn over

The starter is crucial for turning the engine when you go to start up your Mercedes. Should the starter fail, the engine might not crank, preventing your A-Class from starting. Listen for clicking noises when you turn the key or grinding during cranking, which could indicate starter problems.

Fuel System Issues Can Prevent a Mercedes A-Class From Starting

car wont start fuel filter

This isn’t about running out of gas like a silly goose. Rather, it’s problems in the fuel system itself that could leave your A-Class unable to drive. Your car uses gas 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 requires for ignition. Fuel injectors can also get clogged over time, so try a fuel injector cleaner like Red Line to clear any blockages and improve starting.

Electrical System or Wiring Problems in a Mercedes A-Class 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, expanding the number of things that can go wrong. Even in older vehicles, the usual suspects include blown fuses, ignition problems, faulty ignition switches, or non-working sensors. Faulty wiring and electronics like these can all prevent your car from starting. Pay attention to your car only starting sometimes, warning lights, or failure to crank as hints of an underlying electrical problem. Pinpointing and fixing these often needs a qualified mechanic near you.

Solutions: Let’s Get Your Mercedes A-Class 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 inability to start up, and then the next step is to try to repair the issue. Here’s advice for the typical issues we’ve discussed up to this point:

How to Identify and Fix Battery Issues in a Mercedes A-Class

car not starting but battery is fine

The first step if a battery issue is suspected for the no start is to check the battery terminals. Make sure they are corrosion-free, tight, and correctly connected. If the terminals are in fact dirty, try cleaning them with a sodium bicarbonate(baking soda) and water solution.

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 A-Class 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 A-Class’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 A-Class

Car wont start replace alternator needed

If you suspect the alternator is causing your car to have problems starting, you can test it yourself. If you can temporarily get the vehicle running (you may need a jump start), and while the engine is running, disconnect the positive terminal of your car’s battery. If the car dies fairly quickly after that, it’s likely a bad alternator. However, be warned this test can be risky and harm delicate electronics in your motor, so it’s best to talk to an experienced mechanic in your town or online first since this test risks messing up the delicate electronic gizmos in your Mercedesvehicle.

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 A-Class. You find all the information you need about your specific vehicle by searching online for something like “free Mercedes vin check dmv“, 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 A-Class

starter motor issues in a ford

If you believe the starter motor might be causing your Mercedes A-Class to not start 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 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 Mercedes A-Class

clogged fuel filter car wont start

If you suspect a fuel system malfunction might be to blame for the no-start, listen closely for the fuel pump noise when you flip the key to “on” before attempting to start the car. The pump should emit a faint humming for a few seconds. If you can’t hear that noise, the fuel pump could be defective. Difficult starting, stalling, or poor throttle response may also result from a blocked fuel filter. Filter and pump issues usually require a professional mechanic to inspect and repair 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 Mercedes mechanic near you. 

How to Fix Electrical or Wiring Problems in a Mercedes A-Class

fuses to check when car wont start

If you suspect it’s an wiring issue, first check the fuses for the ignition system, and swap out any that have blown. If your A-Class starts after this, it was a successful, inexpensive repair! But if your Mercedes A-Class refuses to start, even sometimes, the ignition switch itself could be problematic. Dash lights on the dashboard could also mean a faulty sensor. These can be intricate issues needing a professional mechanic to identify and properly repair (see below advice on local mechanics).

Preventive Steps

As grandad would say: “An ounce of prevention is worth a pound of cure”. Here’s how to avoid future troubles starting your A-Class:

Regular Maintenance of Your Mercedes A-Class

Regular maintenance on car to prevent starting issues

Regular maintenance is critical to avoiding issues, including oil changes, checking the battery, cleaning terminals, replacing the fuel filter as needed, and having a mechanic examine the car routinely. If confused about maintenance for your model, ask a mechanic locally or online for clarification.

Drive Your A-Class Regularly

drive regular to avoid car troubles

If your Mercedes A-Class happens to sit motionless in your garage or driveway for extended times without being driven, the battery can weaken as it is not being recharged by the engine running, through the alternator. Try your best to drive your vehicle regularly to keep a charged battery. If you remember you have not 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 entirely run out of charge 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 abnormal 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 you gave fixing the no start yourself an honest effort but with no luck, consider consulting a Mercedes 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 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 A-Class that’s having issues or a Mercedes 190 (W201) 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 explain the problems you’re having, ask Mercedes mechanics unlimited questions, and even submit pics and videos so you can show the expert what you mean. You can chat with them via online chat or voice chat, whichever you prefer. The Mercedes specialist will diagnose the issue, advise the best fix for your specific case, and even walk you through simple maintenance 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 to see firsthand how convenient fixing problems can be.

So feel free to try out our online Mercedes mechanic service and see for yourself!

When and How to Get a Local Mercedes Mechanics Help

automobile mobile mechanic

When your Mercedes A-Class 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 A-Class started again ASAP.

So if you think a mobile mechanic is the best solution for you, instead of searching on Google something like  “mobile vehicle 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 A-Class won’t start, it can be a total bummer. 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 get help if necessary, will be a huge help. Keep in mind that regular care is key to avoiding most vehicle issues.

Frequently Asked Questions (FAQs)

What if my Mercedes A-Class won’t start up?

First things first, take a deep breath and don’t panic. Look 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 locate the exact issue, you’ll have to consult a trusted Mercedes mechanic locally or online.

Determine if my Mercedes A-Class won’t start because of the battery?

Signs that your Mercedes’s battery is the issue are, 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 older it’s probably best to just replace it entirely.

How to prevent my Mercedes A-Class from failing to start in the future?

To prevent this hassle from reoccuring, routine servicing is vital. This includes oil changes, testing the battery and cleaning its terminals, changing out the fuel filter when necessary, and getting your Mercedes A-Class inspected by a mechanic frequently. Also, make sure to drive the car frequently so the battery stays charged.

Can I consult an online mechanic if my Mercedes A-Class fails to start up?

Yes, you can. An online mechanic service like ours can offer immediate professional Mercedes mechanic assistance and advice, without you having to leave your home. {This is especially useful if your Mercedes A-Class is unable to start and is immobile in the driveway,.

How can services like MechanicAnswer.com provide assistance if my Mercedes A-Class doesn’t ignite?

We connect you with certified Mercedes mechanics who can offer recommendations specific to your unique situation. You can brief them about your vehicle troubles, ask unlimited questions as needed, and even submit images and videos so you can comprehensively demonstrate the problem. The specialist auto mechanic will be able to help, diagnose the issue, and put forward the best solution and guide you through it.

Interesting Mercedes A-Class Facts

Did you know that the Mercedes A-Class was the first ever compact car produced by Mercedes-Benz? It’s like the little engine that could, packing a powerful punch in a small package. And get this – the latest models come with the MBUX (Mercedes-Benz User Experience) infotainment system, which is like having your own personal assistant right in your car. It’s so futuristic, it’s almost like having a conversation with your car! Plus, the A-Class has a sleek and sporty design that turns heads wherever it goes. It’s no wonder you’re itching to get it started and hit the road. Don’t worry, you’ll be back behind the wheel of your trusty A-Class in no time!

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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