W211 Original Key Can’t Work Issue Solved by CGDI MB
Encountered issues after programming a new key on a W211 with CGDI MB? This step-by-step guide provides solutions. Learn how to retrieve key password, determine tracking codes, save ElS data, compute cleared password, erase ElS, upload data with password, select "Allow modify," replace rolling codes, and write data with CGDI MB.
This post is created for individuals who have a functional (BE) Key but encountered an issue with their original key after programming another key based on
CGDI MB manual on a W211.
Operation steps:
Step1: It is essential to possess the key password.
Step2: Determine the rolling/tracking codes for the key.
Step3: Retrieve ElS data, enter the password, and save the data.
Step4: Compute the cleared password and erase ElS.
Step5: Upload ElS data using the password.
Step6: Select "Allow modify" option.
Step7: Replace the rolling codes of the key position with the key's rolling codes.
Step8: Write data with CGDI MB.
Step9: Program the key and activate ElS.