2011 Mercedesbenz Ml350 Visitor Turn Key and Nothing Happens Then Try Again and It Starts

Mercedes won't first or turn over? Are you experiencing Mercedes-Benz no start bug?  Key won't turn at all? Engine turning over merely the machine will not start? Maybe it finally starts, runs for a few seconds and then dies. These are common Mercedes-Benz starting bug.

This comprehensive stride by footstep guide is written to assistance you with Mercedes-Benz no showtime issues. While in few cases troubleshooting by a professional is required, there are several test that you lot can perform yourself to avoid a repair neb.  In order for your Mercedes-Benz to starting time there are several conditions that demand to be met and also needs:

1. Start enable by Bulldoze Authorization Arrangement
2. It requires electric ability to creepo the engine.
3. Requires fuel
4. Requires spark

Top 5 Mercedes-Benz no start problems

• Engine Click, No Get-go

• Engine Dies Right After Information technology Starts

• Car turns over, but it won't outset

• The car makes a clicking noise but won't get-go. Hint: Starter Trouble or Low Battery

• Primal volition not turn the ignition

Step 1: Verify that battery is fully charged

This may seem obvious, just an former battery is the root of many headaches and can cause all sorts of malfunctions on Mercedes-Benz cars. How erstwhile is the battery on your Mercedes-Benz?

While some MB owners take pushed over 10 years on an original battery, the bombardment should be considered for replacement around 6 or 7 years. If you have an old battery replace it before you motility to the side by side troubleshooting footstep. If you want to save on the price of the bombardment, head over to Amazon and check out these batteries that fit Mercedes-Benz. They toll much less than the bombardment you purchase at the dealership. You lot can c heck toll and read reviews for multipleMercedes-Benz AGM Group 94 Batteries that will fit your Mercedes-Benz.

You know you have a relatively new battery. Y'all go to start your Mercedes-Benz and yous either hear information technology turn over once or hear several clicks as in this video.

This Mercedes-Benz is non starting because of a depression battery. In this instance, what y'all need to do is trickle accuse 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 mode.

Step 2: Bank check fuses and relays

Mercedes won't start, and it's non the battery.

Next, you should check the fuses on your machine.

You would want to check fuses for systems such as: Starter Circuit, Ignition, EIS, Fuel Pump. There could exist more than circuits that impact the starting depending on the model. You lot can easily cheque all the fuses if you lot are not certain, to brand sure none of them are non burned out. Proceed in mind that fuses are there to protect systems when they malfunction. Brand sure to supervene upon the fuse with the same ampere rating fuse. In that location is a adventure the fuse could blow proceeds, soon after that.

To test the fuses, y'all can use any digital multimeter to hands and chop-chop cheque the fuses without removing them. In the video tutorial below nosotros used Mastech AC/DC Digital Multimeter.

Read DIY Tutorial: How to bank check all fuses on a Mercedes-Benz, the easy way.

Step three: Check Gear Selector / Restriction Light Switch

The brake low-cal switch is a mutual culprit and oft fail on Mercedes-Benz cars. The Drive Authorization System volition non allow starting the motorcar if the brake light switch is not working properly. In some cases, you volition notice this trouble because yous can't become the car out of park. Gear shift stuck is one of the most common problems with Mercedes-Benz cars. Unfortunately, looking to see if the brake lights turns on while yous printing the brake pad, is not a proficient test to tell if the brake light switch is working properly. This is because the restriction calorie-free switch has two or more micro-switches inside and only one of them controls the rear brake lights.

Another fashion to verify if the gear selector module is working properly is to expect at the instrument cluster. Now, as you move the shifter from Park to Opposite to Neutral, do you see the gear indicator too modify on the instrument cluster? If you don't see the letters on the cluster change from P to R to N, it is a practiced sign that the gear selector module is defective. You can purchase a new brake light switch on Amazon for less than $fifteen USD, only practise a search forMercedes-Benz Restriction Low-cal Switches. In the video below y'all will can meet how easy it is to supplant the brake light switch on a Mercedes-Benz E-Class. The procedures are very similar for other Mercedes-Benz models such as CLS, S, C, ML, R-Course.

Read DIY Article: How to replace the brake calorie-free switch on whatever Mercedes-Benz. If you replaced the brake light switch and your car won'tstart movement on to Step four.

Footstep four: Fuel Issues, Mercedes Won't Start

Is the engine turning over? Permit'due south eliminate the possibility of a fuel organisation issues. Troubleshooting fuel related issues is not very difficult and you can check the fuel pressure level yourself. Checking the fuel pressure is very unproblematic.

For this test, you will need a fuel pressure gauge. What yous need is a fuel pressure gauge with Schrader valve adapter. A great and affordable gauge that nosotros accept used in the past is this Actron Fuel Pressure Approximate which works on Mercedes-Benz cars. Turn the engine off and connect this gauge to the Schrader valve test port shown in the picture below. Offset the car and you should be able to become around 60 psi. When the engine is running and when you turn off the engine the pressure should stay steady. Ever perform this test on a cold engine.

Next, make sure that the fuel injector connections are secure and not loose.

Bank check the fuel pump and the fuel pump relay. In some Mercedes-Benz models you will be able to hear the fuel pump when you mind advisedly almost the fuel tank. While one of your friends plough the cardinal to position Ii, all dash lights on but motorcar is non started; listen carefully at these locations.  Under or behind the rear seat, listen inside the trunk near the back of the back seat, listen through the fuel make full with the fuel cap removed. The fuel pump should run for several seconds every time you turn the primal to position Two.

Also check the fuel filter. Make sure that it is onetime and clogged. They can be easily replaced in almost cases and don't cost very much.

Step five: Check engine fault codes

If your Mercedes-Benz starts and dies then some other thing that yous tin can do is retrieve the error codes.

An iCarsoft MB Two or Launch Creader 7+ will be all that you need to retrieve fault codes.

These two scanners will pull the fault codes from the ECU but also from TCU, SRS, ESP, ETS, BAS and several more command units.

If you need help on how to use an OBD Ii scanner to retrieve the fault codes read this article : How to check the fault codes on a Mercedes-Benz

Step 6: Starter Motor Problems – Mercedes won't plough over

If the starter is defective y'all will not be able to go the engine to plough. Get-go check the starter fuse. Often times, when the starter is defective or seizes upwards it will blow out the fuse that protect the starter circuit. Some other thing that you tin can endeavour is to striking the starter with a rubber hammer a couple of times.

Depending what kind of starter problems you have, the starter may piece of work a few more times. Fifty-fifty if the starter begins to work once again, consider replacing it, every bit information technology is nearing the stop of its life.

If you come to the conclusion that the starter is the trouble read this article on:How to Supercede a Starter on a Mercedes-Benz.

Pace 7: Ignition arrangement, Spark Plugs/Coils – Mercedes starts and so dies

If your auto cranks but it does not start there are two things that you lot should check offset. One is that at that place is fuel and second that there is spark. Checking for spark is very piece of cake if you accept an In-Line Spark Test Tool.

As you lot will come across from the link, those tools are very inexpensive and a nifty tool to cheque for spark. You remove the spark plug boot from one of the spark plugs and install this tool in line. Creepo the auto and notice the spark plug test tool.

Read DIY Guide: How to replace the spark plugs on a Mercedes-Benz

Stride 8: Check Crankshaft position sensor – Crank No First

If the crankshaft position sensor fails you lot may experience crank and no offset symptoms. In this video below you will see a Mercedes-Benz that refuses to start due to a failed crankshaft position sensor.

When the crankshaft position sensor fails yous may notice the following symptoms:

• Check engine light is on.
• Intermittent starting
• Misfiring
• Hesitation
• Engine vibrations
• Engine stall

In this Video you car come across a Mercedes-Benz that cranks but won't kickoff do to failed crankshaft position sensor.

Don't panic though. Replacing the crankshaft position sensor is easy and the sensor is very inexpensive. Read this detailed article on how to supersede the crankshaft position sensor on about Mercedes-Benz V6 and V8 engine.

Step 9: Commuter Authorization Arrangement / Fundamental won't plow in igntion

The car may not commencement if you take a newer machine with a SmartKey due to Driver Authorization Organisation (DAS) failure. The newer keys have a transponder integrated in them. The primal fob remote serves two purposes. Get-go it disables the anti-theft organization when you unlock the car. Second, Drive Authorization Organisation verifies the fundamental to brand sure it is the right key to commencement the car.

If your key does not turn the ignition, at that place are two things that are the most likely scenarios: The battery is fully or partially discharged. This doesn't allow the electronic ignition system (EIS) to part at all. Make certain to verify that you don't take a lacking bombardment problem. 2nd, the Driver Authorization related problems. When you insert the central into the ignition, the key is verified and authorized to offset the car.

Once the primal is authorized the steering cavalcade is unlocked and the Engine Command Unit is immune to start the engine. Replacing the electric ignition module (EIS) tin only be performed past the dealership and typically costs over $g-$2500. Keep in mind that the fundamental can often be the problem and non the DAS or EIS. So if yous accept a spare key, attempt that first before yous replace the EIS. Keys do go bad more than often than EIS modules exercise.

Pace 10: Other possible problems – Mercedes-Benz will not beginning

The list can go on and on as to what can cause a Mercedes-Benz to not showtime. If you cheque all of the things higher up you have done nearly of the work. For this last footstep you will need a professional diagnostic scanner. Our top  recommendation in this case is theAutel DS708 Professional Scanner, powerful scanner that works on most makes and models.

Once you hook up a professional OBD II scanner to the OBD-II port of your car, yous will exist able to browse multiple systems on your automobile to find out what is causing the problem.

Here are a few other items that may foreclose your Mercedes-Benz from starting. In most cases y'all volition get a mistake code related to one of the following:

• ECM / PCM computer failure
• Camshaft position sensor
• Shifter Selector module
• Fault codes related to commuter authorization or immobilizer
• Electrical problems

In rare cases, y'all may too have a locked up engine due to lack or oil or hydro lock. Depression pinch or blown head gasket can also cause a Mercedes-Benz car not to start but are not very mutual issues.

We promise this guide helped y'all beginning your Mercedes-Benz. As y'all perform these exam be careful to avert injuries to yourself and damages to yourself. If yous don't feel comfortable with some of these exam, it'southward better to take your auto to an motorcar repair store.

Related Terms	Mercedes-Benz Models
Mercedes-Benz Not Starting Why is my car not starting Why isnt my auto starting Car not starting Car wont plough over Engine wont turn over Starter wont turn engine over Applicable Models	A Class B-Class C-Course Eastward Grade S-CLASS CLA-Grade CLS-Grade CLK-CLASS CL-CLASS SLK SL R-Course GLA-CLASS Grand-CLASS GL-CLASS G-CLASS

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Source: https://www.mercedesmedic.com/mercedes-wont-start/

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