How does the EIS system work on a Mercedes Benz?
The vehicle will instantaneously carry out a sequence of test handshakes to ensure the correct key has been inserted. Each time the key is inserted, the EIS system will check the key and then ask the ESL (Electronic Steering Lock) system for verification that it accepts the correct key is being used.
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 does the sequential code on the Mercedes EIS key mean?
The key has a sequential code to ensure the vehicle is not stolen. The vehicle will instantaneously carry out a sequence of test handshakes to ensure the correct key has been inserted.
What happens if your EIS unit is faulty?
Don’t worry if your vehicle is not listed as this is not a complete list. If the EIS unit becomes faulty, the “Turn & Start” function will be de-activated and the module will be locked for security purposes. This will stop the vehicle from starting.
Why is my Mercedes Benz EIS not working?
The key has a sequential code to ensure the vehicle is not stolen. Mercedes Benz owner may face the problem that 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).
Is the EIS module factory fitted to all Mercedes?
The EIS module is factory fitted to almost all models and we’re getting units sent in right across the board from C-Class C220 Mercedes to ML’s and E350 Mercedes. You can expect the EIS module to be supported and installed on the following Chassis list:
The key has a sequential code to ensure the vehicle is not stolen. The vehicle will instantaneously carry out a sequence of test handshakes to ensure the correct key has been inserted.
Don’t worry if your vehicle is not listed as this is not a complete list. If the EIS unit becomes faulty, the “Turn & Start” function will be de-activated and the module will be locked for security purposes. This will stop the vehicle from starting.