2016 MERCEDES-BENZ E-SEDAN change key battery

SmartKey battery
Checking the battery
XPress the &or% button.
The battery is working properly if battery
check lamp :lights up briefly.
The battery is discharged if battery check
lamp :does not light up briefly.
XChange the battery (Ypage 93).
iIf the SmartKey battery is checked within
the signal reception range of the vehicle,
pressing the &or% button:
Rlocks or
Runlocks the vehicle
iYou can get a battery at any qualified spe-
cialist workshop.
Replacing the battery
You require a CR 2025 3 V cell battery.
XTake the mechanical key out of the Smart-
Key (
Ypage 92).
XPress mechanical key ;into the opening
in the SmartKey in the direction of the
arrow until battery compartment cover :
opens. Do not hold battery compartment
cover :closed while doing so.
XRemove battery compartment cover :.
XRepeatedly tap the SmartKey against your
palm until battery=falls out.
XInsert the new battery with the positive ter-
minal facing upwards. Use a lint-free cloth
to do so.
XMake sure that the surface of the battery is
free of lint, grease and other contaminants.
XInsert the front tabs of battery compart-
ment cover :into the housing and then
press to close it.
XInsert mechanical key ;into the Smart-
Key.
XCheck the function of all SmartKey buttons
on the vehicle.
SmartKey93
Opening and closing
Z

Problems with the SmartKey
ProblemPossible causes/consequences andMSolutions
You can no longer lock
or unlock the vehicle
using the SmartKey.The SmartKey battery is discharged or nearly discharged.
XCheck the SmartKey battery (Ypage 93) and replace it if nec-
essary (
Ypage 93).
If this does not work:
XUnlock (Ypage 96) or lock (Ypage 96) the vehicle using the
mechanical key.
The SmartKey is faulty.
XUnlock (Ypage 96) or lock (Ypage 96) the vehicle using the
mechanical key.
XHave the SmartKey checked at a qualified specialist workshop.
You can no longer lock
or unlock the vehicle
using KEYLESS-GO.The SmartKey battery is discharged or nearly discharged.
XCheck the SmartKey battery (Ypage 93) and replace it if nec-
essary (
Ypage 93).
If this does not work:
XUnlock (Ypage 96) or lock (Ypage 96) the vehicle using the
mechanical key.
There is interference from a powerful source of radio waves.
XUnlock (Ypage 96) or lock (Ypage 96) the vehicle using the
mechanical key.
KEYLESS-GO is malfunctioning.
XLock/unlock the vehicle using the remote control function of
the SmartKey.
XHave the vehicle and SmartKey checked at a qualified specialist
workshop.
If the vehicle can also not be locked/unlocked using the remote
control function:
XUnlock (Ypage 96) or lock (Ypage 96) the vehicle using the
mechanical key.
XHave the vehicle and SmartKey checked at a qualified specialist
workshop.
You have lost a Smart-
Key.XHave the SmartKey deactivated at a qualified specialist work-
shop.
XReport the loss immediately to the vehicle insurers.
XIf necessary, have the locks changed as well.
94SmartKey
Opening and closing

ProblemPossible causes/consequences andMSolutions
You have lost the
mechanical key.XReport the loss immediately to the vehicle insurers.
XIf necessary, have the locks changed as well.
The engine cannot be
started using the
SmartKey.the on-board voltage is too low.
XSwitch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work:
XCheck the starter battery and charge it if necessary
(
Ypage 278).
or
XJump-start the vehicle (Ypage 279).
or
XConsult a qualified specialist workshop.
The engine cannot be
started using KEYLESS-
GO. The SmartKey is in
the vehicle.The vehicle is locked.
XUnlock the vehicle and try to start the vehicle again.
There is interference from a powerful source of radio waves.
XStart your vehicle with the SmartKey in the ignition lock.
Doors
Important safety notes
GWARNING
If children are left unsupervised in the vehicle,
they could:
Ropen the doors, thus endangering other
people or road users.
Rget out and disrupt traffic.
Roperate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
Rrelease the parking brake.
Rshifting the automatic transmission out of
park position P
RStart the engine.
There is a risk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children.
Ideally, place luggage or loads in the trunk/
cargo compartment. Observe the loading
guidelines (
Ypage 238).
Information in the Digital Operator's
Manual
In the Digital Operator's Manual you will find
information on the following topics:
RUnlocking and opening doors from the
inside
RCentrally locking and unlocking the vehicle
from the inside
RAutomatic locking feature
Doors95
Opening and closing
Z

On the mobile phone
XSwitch on the mobile phone and enter the
PIN when prompted to do so (see the man-
ufacturer's operating instructions).
XActivate Bluetooth®and, if necessary,
Bluetooth®visibility for other devices (see
the manufacturer's operating instructions).
This visibility is for restricted periods of
time on some mobile phones (see the man-
ufacturer's operating instructions).
XSet the Bluetooth®device name for the
mobile phone if necessary.
The Bluetooth
®device names for all of one
manufacturer's products might be identical.
To make it possible to clearly identify your
mobile phone, change the device name (see
the manufacturer's operating instructions).
The name can be freely selected.
If the mobile phone supports the PBAP
(Phone BookAccess Profile) and MAP
(Message AccessProfile) Bluetooth
®pro-
files, the following information will be trans-
mitted after you connect:
RPhone book
RCall lists
RMessages
The battery of the mobile phone should
always be kept sufficiently charged in order to
prevent malfunctions.
iNot all mobile phones available on the
market are equally suitable. You can obtain
more detailed information about suitable
mobile phones and about the connection
between the mobile phone and Audio 20/
COMAND on the Internet at
http://www.mbusa-mobile.com .
You can also obtain more information by
calling.
In the USA, you can get in touch with the
Mercedes-Benz Customer Assistance Cen-
ter on 1-800-FOR-MERCedes
(1-800-367-6372). In Canada, you can get in touch with the
Customer Relations Center on
1-800-387-0100.
iSome displays (e.g. the signal strength)
depend on the supported version of the
Hands-Free Profile.
Procedure and general information
Searching for and authorizing (connect-
ing) a mobile phone
Before using your mobile phone with Audio
20/COMAND for the first time, you will need
to search (
Ypage 229) for the phone and
then authorize it (
Ypage 229). Depending on
the mobile phone, authorization either takes
place by means of Secure Simple Pairing or by
entering a passkey. Audio 20/COMAND
automatically makes the system suitable for
your mobile phone available. You can recog-
nize Secure Simple Pairing by a code which is displayed in Audio 20/COMAND and on the
mobile phone. You can recognize the passkey
system by the fact that you have to enter a
code on the mobile phone and in Audio 20/
COMAND. The mobile phone is always con-
nected automatically after authorization.
If Audio 20/COMAND does not detect your
mobile phone, this may be due to particular
security settings on your mobile phone. You
can also start the search procedure and
authorization on the mobile phone
(
Ypage 230).
Device-specific information on authorizing
and connecting Bluetooth
®-capable mobile
phones can be found on the Internet at
http://www.mercedes-benz.com/
connect.
You can authorize up to 15 mobile phones.
Only one mobile phone can be connected to
Audio 20/COMAND at any one time.
De-authorizing (disconnecting) a mobile
phone
The connection is terminated automatically if
you leave the receiver range of Audio 20/
228Audio 20/COMAND operating system
Audio 20/COMAND