Location of components - RA0704FLH0015X (07.4-0015)

WARNING: This page does not describe the selected car, but rather 42 other vehicles, including the 1999 Mercedes-Benz S600, 1999 Mercedes-Benz S500, 1999 Mercedes-Benz S420, 1999 Mercedes-Benz S320, and 1999 Mercedes-Benz CL600. However, it is still accessible from the selected car via links, so may be relevant.

Engine 104
Components in engine compartment

Fig 1: Identifying Electronically Controlled Gasoline Injection System (LH) Components Location - Engine 104 (1 Of 3)
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Components in engine compartment

Fig 2: Identifying Electronically Controlled Gasoline Injection System (LH) Components Location - Engine 104 (2 Of 3)
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Components on engine

Fig 3: Identifying Electronically Controlled Gasoline Injection System (LH) Components Location - Engine 104 (3 Of 3)
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Engine 119
Components in engine compartment

Fig 4: Identifying Electronically Controlled Gasoline Injection System (LH) Components Location - Engine 119 (1 Of 3)
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Components in engine compartment

Fig 5: Identifying Electronically Controlled Gasoline Injection System (LH) Components Location - Engine 119 (2 Of 3)
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Components on engine

Fig 6: Identifying Electronically Controlled Gasoline Injection System (LH) Components Location - Engine 119 (3 Of 3)
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Engine 120
Components in engine compartment

Fig 7: Identifying Electronically Controlled Gasoline Injection System (LH) Components Location - Engine 120 (1 Of 3)
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Components in engine compartment

Fig 8: Identifying Electronically Controlled Gasoline Injection System (LH) Components Location - Engine 120 (2 Of 3)
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Components on engine

Fig 9: Identifying Electronically Controlled Gasoline Injection System (LH) Components Location - Engine 120 (3 Of 3)
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Components which are allocated to the respective bank of cylinders

Because of the intake manifold design, the following components which are located on the left-hand side are allocated to the right-hand bank of cylinders and components which are located on the right-hand side are allocated to the left-hand bank of cylinders.
- Air mass sensor
- Intake air temperature sensor
- ARF switchover valve
- Regeneration switchover valve
Location

Fig 10: Identifying Left Air Mass Sensor With Hot Wire And Left Hot Wire Intake Air Temperature Sensor
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 11: Identifying Right Air Mass Sensor With Hot Wire And Right Hot Wire Intake Air Temperature Sensor
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Location of switchover valves

Fig 12: Identifying Left ARF Switchover Valves
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 13: Identifying Right ARF Switchover Valves
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 14: Identifying Left Regeneration Switchover Valve
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 15: Identifying Right Regeneration Switchover Valve
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

LH hot wire control units (N3/2, N3/3)

Two control units are required: right LH hot wire control unit (N3/3) for cylinders 1-6 (colour coding of coupling dark green/light green) and left LH hot wire control unit (N3/2) for cylinders 7-12 (colour coding of coupling dark blue/light blue).

To distinguish which control unit is responsible for the left and which for the right bank of cylinders, the left LH hot wire control unit (N3/2) is laid to ground (coded) at the connection (1.2, see Wiring Diagrams Model 140, Volume 1).

Fig 16: Identifying LH Hot Wire Control Units
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.