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 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).
What happens if you have an incorrect ignition code?
The chip in the key transmits a specific code, of which there are millions. If this code matches the ones programmed into the vehicle, engine starting is enabled. An incorrect key code, such as from an unprogrammed key or damaged key, would prevent engine starting. Code “confusion,” such as having multiple keys can also occur, preventing ignition.
Why does my car not start when I put the key in?
Putting the key in the ignition switch and starting the car feels like second nature. 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.
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 your ignition key is not recognized by EIS?
If you have backup ignition keys, give them a try. You’ll have to get a dealer to help you with a key that isn’t recognized by the EIS. If your keys have an infrared connection (check your owner’s manual) you may be able to fix the problem yourself. Check your owner’s manual.
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).
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.