Car model and year: Benz W213 2018
Symptoms: Android Auto
is totally unusable google maps/waze are crap offline and they
don't have any lane assist. Need: To
enable Mirrorlink What to do? First the
dealer must activate engineering mode using Xentry. Then
Mirrorlink can be turned on from the engineering menu. Dealers
are reluctant to enable engineering mode. Then,
how the dealer activates Mirrorlink? Google and find
this: https://www.youtube.com/watch?v=RLi6-zvhSGQ
Purpose: Enable Mirrorlink from Engineering Mode on Mercedes
E-Class w213 2017 (Credit to Geir Karsten Moen) https://www.youtube.com/watch?v=LTW9s-sGSeE
Mercedes W213 MirrorLink Activation (Credit to INSIDE
EDITION) Attach some images below: 
Thanks. Source: http://blog.obdexpress.co.uk/2019/11/01/how-to-enable-engineering-mode-mirrorlink/
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