Here are the steps for Mercedes-Benz E-Class Interface W211 Installation/Connection:
1. Interface module full-set
2. Remote function & connection feature
3. Disassemble guide
To connect interface , have to release command system and Gear box in the circle
After Shift -Lever on Drive- mode , Pull out gearbox as arrow direction
Release (1st–step) gear-box by hands Release (2nd-step) gear-box by hands as arrow direction
When you disassemble gear-box, you have to see and treat in the circle carefully
(Caution)
In order to move shift lever on drive-mode, ignition key is ON mode
Remove in the ashtray as picture
You have to separate ashtray as arrow direction completely

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