2014-2021 Mercedes C Class 4 Door General notes -> Diagnostics connection User Manual
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General notes -> Diagnostics connection for Your Mercedes C Class 4 Door Fourth Generation (2014-2021)

General notes 29  
NOTE Battery discharging from using  
devices connected to the diagnostics  
connection  
Applied harmonised standards, in particular:  
DIN EN 55014-1: 2012  
DIN EN 55014-2: 2016  
#
Only connect devices to the diagnostics  
connection of the vehicle that have  
been tested for suitability and are safe.  
*
Manufacturer: Dunlop Tech GmbH  
Address: Offenbacher Landstrasse 8, 63456  
Hanau  
Authorised representative: IMS dept.  
Date: December 2019  
Signature: IMS-AE, IMS-AE-L  
Using devices at the diagnostics connection  
drains the battery.  
&
WARNING Risk of accident due to  
objects in the driver's footwell  
#
Check the charge level of the battery.  
Objects in the driver's footwell may impede  
pedal travel or block a depressed pedal.  
This jeopardises the operating and road  
safety of the vehicle.  
#
If the charge level is low, charge the  
battery, e.g. by driving a considerable  
distance.  
Connecting equipment to the diagnostics con‐  
nection can lead to emissions monitoring infor‐  
mation being reset, for example. This may lead  
to the vehicle failing to meet the requirements of  
the next emissions inspection during the main  
inspection.  
#
Stow all objects in the vehicle securely  
so that they cannot get into the driver's  
footwell.  
Diagnostics connection  
The diagnostics connection is only intended for  
the connection of diagnostic devices at a quali‐  
fied specialist workshop.  
#
Always fit the floor mats securely and  
as prescribed in order to ensure that  
there is always sufficient room for the  
pedals.  
&
WARNING Risk of accident due to con‐  
necting devices to the diagnostics con‐  
nection  
#
Do not use loose floor mats and do not  
place floor mats on top of one another.  
If you connect the devices to the diagnostics  
connection of the vehicle, the function of the  
vehicle systems and operating safety may be  
impaired.  

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