Solved! Key Tool Plus Won’t Read W220 2004 S500 EIS on IR

Question:

I have Xhorse Key Tool Plus, it doesn’t read locks on the IR, it writes errors all the time, locks with iron fish work, but there are no plastic ones, or do I just need to do everything in the bench now?

Here is the Answer:

Program keys on Bench not OBD.

W221 is on bench only

Some W211,W209,W203 and other older models can have the password read through IR, not all of them.

Done! Hope this could help!

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