How does the ignition switch work on a Mercedes Benz?
The ignition switch is not like the old key blade and tumbler systems of yesterday that were purely mechanical. MBZ uses a SmartKey system that validates an infrared code handshake to electronically unlock the ignition switch and enable the starter.
Why is my Mercedes C320 C class not turning?
I have a 2001 Mercedes c320 c-class. The ignition key won’t turn, the lights don’t turn on and I have use the metal key to unlock the door.Everything was working fine until today. Anyone know what could be wrong? It’s probably a dead vehicle battery.
Why is my Mercedes-Benz ignition key not turning?
Try checking the voltage of the battery and if low just charge it and hope for the best. Those model cars are notorious for amperage draws at rest which is why the battery is probably dead. Could be one or both your seat control units under the seats staying on draining your battery. I just speak from experience. Just an fyi.
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
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.
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’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.