Car Data | Mercedes C CLASS (S204/W204) 2008 - 2014

SmartCAN and ByPass Relay towbar wiring instructions for an Mercedes C CLASS (S204/W204) 2008 - 2014

The boxes below show key fitting details Cable entry point, CAN connection details, etc. Alphanumeric references (e.g. A4) refer to the car map at to foot of the page .
Socket cable entry point M59/60 Grommet
Longer Cable Required? N/A
Power Source Fusebox.
Constant Live Colour Red
Fusebox/Battery Location JR47
Add Fuse
Compatible SmartCAN Module/Kit TF2302, TF2351
CAN HI/LO Location JR48
HI/LO Pins/Colours HI Brown/red, LO Brown
Hard Brake Connection JR46
Is Data Two Way? Yes
Link to Recode Data N/A
Functions added automatically: FCO, PDC cut off, C2 on dash
If PDC cuts out, moving the cr will reset it.

Very rarely, a "SAM-low" unit is installed. This has to be exchanged for a higher-quality, trailer compatible SAM. Purchase from Daimler automotive supply stores.

Wire colours and locations, use LED type probe to confirm correct wire in given location.

Notes -
Compatible ByPass Relay TF2218/7 Series
Other Appropriate Relay TF2302. Kit:TF2351
Lights Wire Colours Alternative Location Comment
LH Flasher Black/White - JR45 -
Fog Light Green/White - JR45 -
RH Flasher Black/Green - JR45 -
RH Side Light Grey/Red - JR45 -
Brake Light Black/Red - JR45 -
LH Side Light Black/Blue - JR45 -
Reverse Green/White - - -
Wiring Diagram