Relay assignment of fuse and relay box in left side of engine compartment - GF54.15-P-1257-03CE

WARNING: This page is about a different car, the 2011 Mercedes-Benz C300, 2010 Mercedes-Benz C300, 2009 Mercedes-Benz C300, and 2008 Mercedes-Benz C300. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Fuse And Relay Assignments Of Box In Left Engine Compartment

Courtesy of MERCEDES-BENZ USA

Slot	Designation
J	Circuit 15 relay (N10/1kJ)
K	Terminal 15R relay (N10/1kK)
LL	Backup relay (N10/1kL)
M	Circuit 50 starter relay (N10/1kM)
O	Engine circuit 87 relay (N10/1kN)
O	Fanfare horn relay (N10/1kO)
P	Valid for engine 156, 272, 276: Secondary air injection relay (N10/1kP)
Q	Backup relay (N10/1kQ)
R	Chassis circuit 87 relay (N10/1kR)