Why is my ignition not working on my Mercedes Benz?

It is possible that the battery in the car is defective, as it does not provide the necessary voltage for the ECU and the N73 Electronic Ignition/Starter Switch (EIS) to function properly. If the battery is dead or has low voltage / under voltage, the CAN communication between EIS and N72 may not function properly.

What causes a Mercedes Benz key to not turn?

List of common problems and possible solutions 1 Locked Steering Wheel. New drivers always experience this at least once, so we thought we would include it in this list. 2 Discharged Battery Undervoltage. 3 Key Tumbler Defective. 4 Defective Electronic Ignition/Switch System EIS / N73. 5 Smart Key Remote. …

What kind of key does a Mercedes Benz use?

While most Mercedes-Benz cars have the SmartKey some models such as the ML Class, SLK Class, Crossfire used a metal blade key up to 2005. Some models suffer from the defective key tumbler. We have seen cars with as little as 20,000 miles where the tumbler go bad. Make sure the steering wheel is not in a locked position as mentioned above.

Why does the key not turn when inserted in the ignition?

The EIS module could also be the reason that the key does not turn when inserted in the ignition. Many car owners complain that the car starts fine on a warm or hot day but in cold days the car will not start. This may sound strange, but it is reported frequently.

What should I do if my Mercedes Benz won’t start?

Start the car and you should be able to get around 60 psi. When the engine is running and when you turn off the engine the pressure should stay steady. Always perform this test on a cold engine. Next, make sure that the fuel injector connections are secure and not loose. Check the fuel pump and the fuel pump relay.

Why does my Mercedes not start when I charge the battery?

This Mercedes-Benz is not starting because of a low battery. In this case, what you need to do is trickle charge your battery using any of these 12 volt battery trickle chargers. If you need help read this article on How to charge a Mercedes-Benz the right way. Mercedes won’t start, and it’s not the battery.

What to do if your Mercedes key won’t turn?

If you have this problem you will have to install a new / virgin EIS. You can not install a used unit because the EIS has to be paired / married to the car using Mercedes-Benz Star Diagnostic Software. They key itself may be the reason why the car doesn’t start. The key may open the doors, but it will not start the car.

Why does my Mercedes not start when I Turn on the ignition?

Despite this brand’s high quality, though, Mercedes’ can develop problems with or without regular car maintenance. There are a few theories about why your Mercedes refuses to start when you switch the key in the ignition.

How to fix no power no start on most Mercedes-Benz?

HOW TO FIX NO POWER NO START ON MOST MERCEDES-BENZ VECHICLES DIY. – YouTube HOW TO FIX NO POWER NO START ON MOST MERCEDES-BENZ VECHICLES DIY. If playback doesn’t begin shortly, try restarting your device.

Why is the battery on my Mercedes Benz not working?

Hint: Starter Problem or Low Battery This may seem obvious, but an old battery is the root of many headaches and can cause all sorts of malfunctions on Mercedes-Benz cars. How old is the battery on your Mercedes-Benz?

What causes a Mercedes Benz key fob to not work?

Key Problems: If your Mercedes’ key fob has a dead (or dying) battery, it may not communicate properly with the Electrical Ignition System (EIS). If your model has an IR-equipped key fob, it may need to be reset (see below) to communicate properly.

What’s the best way to turn the ignition?

Then insert the key into the ignition and gently jiggle the key without putting much pressure on the key as do this. As the lock pins on the tumbler wear out it will get harder and harder to turn the ignition of your car. Here is a video that will help you understand this problem.

Why does my Mercedes 300SD won’t start?

THIS AS YOU KNOW CREATED AN OPEN CIRCUIT IN THE STARTER/IGNITION CIRCUIT. I was able to drive away from the station because for the moment the circuit was not open, however the next day I was on a busy rush hour freeway, and the benz stalled in the middle lane.

What happens if you don’t turn the ignition key?

Sometimes the ignition key won’t turn or rotate. If that happens the vehicle won’t start, the steering wheel won’t turn and it won’t shift into gear. On a late 90’s or early 2000 GM vehicle this is the way to get it apart so you can replace the tumbler.

What happens when you turn off the engine on a Mercedes?

When you turn the key off on your Mercedes diesel, you may have noticed that the engine will not quit immediately. In some cases it may even keep running a second or two after you have turned the key to the off position before it finally quits.

What are the problems with a Mercedes Benz?

Top 5 Mercedes-Benz no start problems 1 Engine Click, No Start 2 Engine Dies Right After It Starts 3 Car turns over, but it won’t start 4 The car makes a clicking noise but won’t start. Hint: Starter Problem or Low Battery 5 Key will not turn the ignition More

Can a bad ignition switch cause a car not to start?

However, if your car has ignition switch problems, you may not be able to start the car at all. Ignition switch problems can also cause issues on the road, such as unexpected shutdowns or electrical problems.

How often should you insert and remove the ignition key?

You may insert and remove the ignition key thousands of times every year, wearing the key and tumblers ever-so-slightly every time. Heavy keychains can add more stress to the ignition cylinder, increasing wear. After a while, the key may fall out of the cylinder or be unable to turn out of the lock position.

Why is my Mercedes-Benz E320 key not turning?

Why Won’t My Key Turn? What are common reasons my Mercedes-Benz E320 key won’t turn? While there are a variety of reasons your Mercedes-Benz E320 key won’t turn, the most common 3 are a binding steering column/lock, an ignition switch issue, or a problem with the ignition key.

What to do if your e320 won’t start?

Place the probes of the voltmeter on the battery terminals and not on the connectors of the battery cables. If you the engine didn’t crank, then both of the voltage readings should be the same.

How does the starter work on a Mercedes E320?

When the current passes to the + side of the solenoid, it closes the circuit, energizing the windings (the “coil” part) which creates a magnetic field, actuating a shaft, engaging the pinion starter gear and simultaneously closing the relay, allowing the large current draw to pass to the starter itself.

What should battery voltage be on Mercedes E320?

To start the diagnostic process, check your battery voltage before and after turning the key to the “start-position”. Before turning the key to position-III, the battery voltage should be around 12.5V or above. Place the probes of the voltmeter on the battery terminals and not on the connectors of the battery cables.

What to do if the key does not turn in the ignition?

If the key does not turn in the ignition, try moving the steering wheel as you try to turn the key. The steering wheel will feel completely solid if you try to move it in one direction and may move slightly in the opposite direction.

What causes a Mercedes Benz ignition to not turn?

Mercedes EZS EIS Ignition Switch Problem, Cause, Solution. A problem that Mercedes-Benz owners may face is the key no longer turns in the ignition. This issue is often caused either by a defective key, bad shifter module, a failed Electronic Ignition Switch (EIS) also known as the EIS-EZS or a bad steering lock module (ESL).

Can you replace the ignition switch on a Mercedes Benz?

Many owners go the route of installing ignition switch, ECU, shifter module and other parts from a donor vehicle. You can’t replace the ignition switch only with one from a used Mercedes-Benz. Several parts need to swapped because the stored VIN needs to be the same in all of them.

What to do if your Mercedes ignition switch is not working?

If you have a spare key try to see if you are experiencing the same symptoms with the other key. If the other key works, keep using it for a couple of weeks to verify that the issue is really the key and not the EIS. Try scanning your Mercedes-Benz for fault codes. Ideally using a Start Diagnostic Scanner.

Where can I get a Mercedes EZs EIS ignition switch?

Check out these companies that provide Mercedes EZS EIS Ignition Module online. W202 W203 W208 W209 W210 W211 W220 W215 W219 W230 W463 W639 W906

Where is the VIN stored in Mercedes EZs ignition module?

The VIN stored in the Ignition Module (EIS-EZS) matches that of the car; it’s your old module after all. Just install it and you are ready to go. Check out these companies that provide Mercedes EZS EIS Ignition Module online.

Why does my Mercedes Benz make a clicking noise?

It requires electrical power to crank the engine. The car makes a clicking noise but won’t start. Hint: Starter Problem or Low Battery This may seem obvious, but an old battery is the root of many headaches and can cause all sorts of malfunctions on Mercedes-Benz cars.

Why is my Mercedes EZs EIS ignition not working?

The only issue here is that if you can’t turn on the ignition, you can’t power on the OBD2 port and the iCarsoft MB II scanner. If the ignition turns on intermittently, consider yourself lucky and scan for codes. Hopefully, there are fault codes that will point you to the problem. Diagnosing Mercedes ignition problems isn’t a simple DIY job.

What to do if you have an ignition switch problem?

If they come to the conclusion that the Ignition Switch (EIS-EZS) is the culprit you will be told that the switch will need to be replaced. This is an expensive repair that can cost several hundred dollars. You have a few options here. Have the dealer install a new ignition switch, and they will program it to match the VIN of your Mercedes-Benz.

Why is my Mercedes Benz starter not working?

Often times, when the starter is defective or seizes up it will blow out the fuse that protect the starter circuit. Another thing that you can try is to hit the starter with a rubber hammer a couple of times. Depending what kind of starter problems you have, the starter may work a few more times.

Why does my Mercedes Benz key not turn?

Key won’t turn the ignition/ Driver Authorization System. The most likely scenario if your key won’t turn is that the battery is fully or partially discharged as it won’t allow the electronic ignition system (EIS) to function properly. Ensure that your battery is working properly.

What to do if your Mercedes EZs ignition switch is not working?

If the other key works, keep using it for a couple of weeks to verify that the issue is really the key and not the EIS. Try scanning your Mercedes-Benz for fault codes. Ideally using a Start Diagnostic Scanner. This scanner should still retrieve fault codes when the ignition is off.

What should I do if my Mercedes battery won’t start?

To determine whether or not your problem is with the battery — without going to the expense of buying a brand new one — use another car to jump start your Mercedes. If this is successful in getting the engine to start, you’ll know your issue is with the battery.

Why is the steering column lock not working?

The steering column lock is a security feature which all car manufacturers incorporate in the cars. It is possible that the battery in the car is defective, as it does not provide the necessary voltage for the ECU and the N73 Electronic Ignition/Starter Switch (EIS) to function properly.

Can a Mercedes Benz EIS be installed on a used car?

You can not install a used unit because the EIS has to be paired / married to the car using Mercedes-Benz Star Diagnostic Software. They key itself may be the reason why the car doesn’t start. The key may open the doors, but it will not start the car.

Where is the ignition switch on an E350?

Push the punch pin all the way in (to press on the ignition switch release tab) and pull the ignition key out with the ignition switch assembly.

Can a Ford Econoline ignition switch be replaced?

The ignition switch in a Ford Econoline E350 van sends an electrical signal to the starter motor when the ignition key is turned. Once the switch fails, you’ll need to replace it. Replacement switches are available from most auto parts stores. The switch and cylinder are one unit and are secured to the steering column with a single retaining pin.

Why did my Mercedes EIS ignition switch fail?

Mercedes-Benz ignition switch (often referred as immobilizer module) can become faulty and in some cases due to user error. For example, some common reasons why the ignition module failed are: Connecting jump starting cables while key is in the ignition. During any of the above scenarios, the EIS-EZS may lose its memory.

What are common reasons my Mercedes-Benz ML350 won’t start?

What are common reasons my Mercedes-Benz ML350 won’t start? While there are a variety of reasons your Mercedes-Benz ML350 won’t start, the most common 3 are a dead battery, an alternator problem, or failed starter. 38% of the time it’s

What causes a car starter to not turn over?

The most common problem with a starting motor is, when you turn your key and nothing happens. A solenoid or motor that has burned out or electrical issues, may cause this as well. Furthermore, a dead battery can cause the same problem. It may appear that you have power to your starting system, but the engine will not turn over.

Do you know the signs of a failing starter motor?

Knowing the signs of a failing starter motor, can help you diagnose the problem. When Diagnosing starter motor problems, always start with the battery. So, for your starter motor to work properly, your car battery has to be in; excellent working condition and fully charged.

Why does my car light not turn on?

The starter requires a min. amount of voltage to engage. The radio, light, etc, will all work still. More than likely your battery is low. Has it been replaced before?

Why is the brake light switch on my Mercedes not working?

If you don’t see the letters on the cluster change from P to R to N, it is a good sign that the gear selector module is defective. You can buy a new brake light switch on Amazon for less than $15 USD, just do a search for Mercedes-Benz Brake Light Switches.

Why are my turn signals not working on my Mercedes ML350?

The most recently reported issues are listed below. The turn signals stop working after driving the car for a few minutes. To get them to work again requires stopping the car, shutting off the engine and restarting it which in turn resets the computer.

Are there any problems with the Mercedes ML350?

See all problems of the 2007 Mercedes Benz ML350 . The turn signals randomly stop working. Vehicle must be turned off and restarted to get signals to work again which only lasts for an unknown number of times. Major safety issue.

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