MERCEDES-BENZ S CLASS 2018 Repair Manual

Ac tivating/deactivating the acoustic lo ck ing
ve ri fi cation signal
Multimedia sy st em:

re ducing th e po we r consum pt ion of th e Smart‐
Ke y. When deactivated, th e SmartK ey cannot be
accessed wi th out authorization.
To activate th e SmartK ey functions:R
Press any button on th e SmartK ey .R
Mo ve th e SmartK ey .R
St art th e ve hicle with th e SmartK ey in th e
stow age compartment of th e center console
( →
page 16 7).
Inser ting/ re moving the mechanical ke y

Mercedes-Benz re commends th at yo u ha ve th e
battery re placed at a qu alified specialist wo rk ‐
shop.

Problem
Po ssible causes/consequences and P Solutions

Locking/unlocking th e ve hicle centrally from
th e inside

If yo u open th e trunk lid from outside, th e trunk
lid is automatically unloc ke d.
Problems with KEYLESS-GO
Problem
Po ssible causes/consequences and P Solutions
Yo u can no lon ge r lock or unlock th e
ve hicle using KEYLESS-GO. Po ssible causes: R
The SmartK ey battery is dischar ge d or nearly dischar ge d.R
There is inter fe re nce from a po we rf ul ra dio signal source.R
The SmartK ey is defective.