Do you need an ignition key for a Mercedes?
In older Mercedes models, an ignition key may be the primary method of starting, entering, and locking your car. Newer Mercedes models utilize keyless entry remotes or key fobs.
Can a bad key cause a Mercedes to not start?
Bad Key – If your Mercedes Smart Key IR board goes bad, the EIS (Electronic Ignition Switch) would not recognize the key and this would not give the proper authorizations to the rest of the system to allow the vehicle to start. At Auto Key Pro, we have the tools and expertise to test the key to confirm if that’s the cause of the problem or not.
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.
How does the electronic ignition work on a Mercedes Benz?
The electronic stage consists of a RF transmitter (for door opening/closing) and an Infra Red transmitter/receiver (for drive authorization) a processor chip, buttons and a battery. After inserting the remote key into the Electronic Ignition Switch (EIS) control module (N73), power is supplied to the key from an induction coil in the EIS.
Where is the ignition lock on a Mercedes Benz?
Insert the tapered end of the KEYLESS-GO key in the ignition lock and turn it to start and operate old school style. Beginning in 2017, the ignition lock in AMG roadsters and coupes is found at the back of the center console storage area, as shown in the image.
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.
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.
Where is the start button on a Mercedes Benz?
Second, for video help, click here. To start a Mercedes-Benz that uses the tapered SmartKey style, the engine Start / Stop ignition button must be removed. It appears to ‘float’ above the dashboard and is easily pulled away from the ignition lock.
How do you remove the key from the ignition?
Insert the key into the ignition. Quickly remove key from ignition and within 10 seconds hold down the lock button. Continue holding the lock button, and at the same time press, the unlock button five times.
What to do if your Mercedes key is worn out?
Mercedes drivers with manual keys might also begin to encounter difficulty with the efficiency of the key’s ability to start the ignition or to unlock the doors. Over time, keys themselves can also become worn out, and you may need to order a replacement key.
Do you need to replace the ignition switch on a Mercedes?
If you do need to replace the key or the ignition switch, then it’s important to make sure that the shop you bring your Mercedes to uses only quality, certified parts that will work best for your specific vehicle.
Where is the ignition key on a Mercedes Benz?
There are 4 electronic and/or mechanical modules that are synchronized for everything to work ok: 1. The key (electronic key); 2. The electronic ignition switch (eis, the place where you put your key in); 3. steering locker; 4 the central electronic circuit module.
Why does my Mercedes not start when I turn the key?
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. It is infuriating to slide behind the wheel, turn the key, see dash lights blink, but the engine won’t turn over.
What does it mean when your ignition key won’t turn?
The key (electronic key); 2. The electronic ignition switch (eis, the place where you put your key in); 3. steering locker; 4 the central electronic circuit module. If only one of them has a problem, the key will refuse to turn.
Can you start a Mercedes Benz with a push button?
If, for some reason, you would rather start your Mercedes-Benz using the key, there is a way to do so. That said, if you’re having problems with your push button start feature, be sure to bring it in for a service appointment. In order to start your Mercedes-Benz with the key instead of the push button, you will need to access the ignition.
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.
Can a Mercedes W210 pull the ignition key out?
Well, first off, the brake has zero to do with pulling a key out on a W210 (at least on MY2000). Started, turned off, tons of times without sitting in the seat with foot on brake. I will also keep an eye on the shifter being fully in park and wheel position. From what I understand, there is no shifter adjustment, so who knows.
Insert the key into the ignition. Quickly remove key from ignition and within 10 seconds hold down the lock button. Continue holding the lock button, and at the same time press, the unlock button five times.
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 are the symptoms of a faulty ignition key?
This is especially true for traditional ignition switches. If the issue is related to your ignition switch and not necessarily your ignition key, then you may notice other symptoms, like stalling, difficulty starting, or inability to direct power to the interior cabin lights or accessories console.
Why does my ignition key not work at remote distances?
Key fobs and ignition keys may not work at remote distances when they begin to malfunction. Again, this could be due to a loss of battery life in the ignition key or a need for reprogramming.
How does a smart key work on an ignition switch?
As you insert the Smart Key remote into the Electronic Ignition Switch (EIS) control module (N73), power is supplied to the key by the induction coil ring located in the EIS. Data is then exchanged with the infrared transmitter to validate the Drive Authorization.
In older Mercedes models, an ignition key may be the primary method of starting, entering, and locking your car. Newer Mercedes models utilize keyless entry remotes or key fobs.
This is especially true for traditional ignition switches. If the issue is related to your ignition switch and not necessarily your ignition key, then you may notice other symptoms, like stalling, difficulty starting, or inability to direct power to the interior cabin lights or accessories console.
Key fobs and ignition keys may not work at remote distances when they begin to malfunction. Again, this could be due to a loss of battery life in the ignition key or a need for reprogramming.