Mercedes-Benz R350 2008 - 2008 MERCEDES-BENZ R320 CDI & R350

Mercedes-Benz R350 2008 - BUZZERS, RELAYS & TIMERS

Mercedes-Benz R350 2008 BUZZERS, RELAYS & TIMERS LOCATION

Component	Location
AIR Pump Relay (E)	On engine compartment fuse & relay box. See Fig. 63.
Air Suspension Compressor Relay (G)	On engine compartment fuse & relay box. See Fig. 63.
Circuit 15 Relay (H)	On engine compartment fuse & relay box. See Fig. 63.
Circuit 15 Relay (N)	On load compartment fuse & relay box. See Fig. 62.
Circuit 15R Relay (R)	On load compartment fuse & relay box. See Fig. 62.
Coolant Circulation Pump Relay (C)	On engine compartment fuse & relay box. See Fig. 63.
Driver/Passenger Seat Adjustment Comfort Relay	Under respective front seat. See Fig. 64.
Engine Circuit 87 Relay (D)	On engine compartment fuse & relay box. See Fig. 63.
Fanfare Horn Relay (F)	On engine compartment fuse & relay box. See Fig. 63.
Fuel Pump Relay Module (O)	On load compartment fuse & relay box. See Fig. 62.
Rear-End Door Closing Warning Buzzer	Left side of tailgate.
Rear Window Defroster Relay (M)	On load compartment fuse & relay box. See Fig. 62.
Rear Wiper Relay (P)	On load compartment fuse & relay box. See Fig. 62.
Socket Circuit 15R Relay (With Run-On) (K)	On load compartment fuse & relay box. See Fig. 62.
Starter Relay (I)	On engine compartment fuse & relay box. See Fig. 63.
Trailer Circuit 30X Relay (L)	On load compartment fuse & relay box. See Fig. 62.
Wiper Level 1/2 Relay (A)	On engine compartment fuse & relay box. See Fig. 63.
Wiper ON/OFF Relay (B)	On engine compartment fuse & relay box. See Fig. 63.

Mercedes-Benz R350 2008 - CIRCUIT PROTECTION DEVICES

Mercedes-Benz R350 2008 CIRCUIT PROTECTION DEVICES LOCATION

Component	Location
Battery Compartment Prefuse Box (F33)	Under right front seat. See Fig. 1.
Cockpit Fuse Box (F3)	Behind right end of dash. See Fig. 1.
Engine Compartment Fuse & Relay Box (F58)	Right side of engine compartment. See Fig. 1.
Front Prefuse (F32)	Right rear of engine compartment. See Fig. 1.
Load Compartment Fuse & Relay Box (F4)	Right rear of cargo area. See Fig. 1.

Mercedes-Benz R350 2008 - CONTROL UNITS

Mercedes-Benz R350 2008 CONTROL UNITS LOCATION

Component	Location
AIRmatic W/ADS Control Module	Right front footwell. See Fig. 87.
Blower Regulator	On bottom of blower motor.
Booster Blower Electronic Blower Controller	On blower motor.
CDI Control Module	Left front of engine compartment.
Central Gateway Control Module	In left front footwell. See Fig. 92.
DTR Control Unit	Behind center front bumper.
Emergency Call System Control Unit	In left rear footwell.
ESP Control Module	Right front corner of engine compartment. See Fig. 86.
Front Door Control Module (Left/Right)	In front of respective front door.
Front SAM Control Unit	Under right front seat. See Fig. 83.
Front Seat Adjustment Control Module With Memory (Driver/Passenger)	Under respective front seat.
Front Seat Ventilation Blower Regulator (Left/Right)	In respective front seat back.
Fully Integrated Transmission Control (VGS) Control Unit (Y3/8n4)	Part of electric control unit (VGS). See Fig. 129.
Headlamp Range Adjustment Control Module	In right front footwell. See Fig. 89.
HRA (LWR) Power Module (Left/Right)	Top of respective headlight unit. See Fig. 61.
HS (SIH) Seat Ventilation & Steering Wheel Heater Control Unit	Under left seat of 2nd seat row. See Fig. 85.
Keyless Go Control Module	Right side of cargo area.
ME-SFI (ME) Control Module	Top center of engine.
Multifunction Steering Wheel Electronics Unit	Inside steering wheel.
PTS Control Module	Under driver's seat. See Fig. 88.
Rear Air Conditioning Blower Regulator	On rear blower motor.
Rear Axle Level Control System Control Module	In right front footwell. See Fig. 93.
Rear-End Door Closing Control Module	Left rear of cargo area.
Rear SAM Control Module	Right rear of cargo area.
Restraints System Control Module	Under center console. See Fig. 81.
SDAR Control Unit	In right rear footwell. See Fig. 90.
Steering Column Module	Top of steering column.
TPM Control Module	Right rear of cargo area. See Fig. 91.
Universal Portable CTEL Interface (UPCI (UHI)) Control Module	Under right seat of 2nd seat row. See Fig. 94.
WSS Control Unit (Weight Sensing System)	On right front seat frame. See Fig. 82.

Mercedes-Benz R350 2008 - MOTORS

Mercedes-Benz R350 2008 MOTORS LOCATION

Component	Location
AIRmatic Compressor Unit	Behind right side of front bumper. See Fig. 8.
Air Pump	Front of engine.
Backrest Angle Adjustment Motor (Driver/Passenger)	In respective front seat back.
Blending Air Flap Actuator (Left) (M2/6)	Left side of air conditioning housing. See Fig. 66.
Blending Air Flap Actuator (Right) (M2/7)	Right side of air conditioning housing. See Fig. 66.
Blower Motor	Under right side of dash.
Booster Blower Motor	Under rear of center console. See Fig. 65.
Center Air Flap Actuator Motor (Left) (M16/23)	Left side of air conditioning housing. See Fig. 66.
Center Air Flap Actuator Motor (Right) (M16/24)	Right side of air conditioning housing. See Fig. 66.
Charge Pressure Positioner	Top rear of engine. See Fig. 143.
Coolant Circulation Pump	Right front of engine compartment. See Fig. 71.
Coolant Shutoff Motor	Left side of cargo area. See Fig. 75.
Defroster Vent Flap Actuator Motor (Left) (M2/8)	Left side of air conditioning housing. See Fig. 68.
Defroster Vent Flap Actuator Motor (Right) (M2/9)	Right side of air conditioning housing. See Fig. 68.
Diverter Flap Actuator Motor (M16/27)	Center of air conditioning housing. See Fig. 68.
Drive Unit 1 (Panoramic Sliding Roof)	Front of roof.
Drive Unit 2 (Panoramic Sliding Roof)	Front of roof.
Dynamic Cornering Lamp Motor (Left/Right)	Inside rear of respective headlight assembly.
Electrically Adjustable & Heated Exterior Mirror (Left/Right)	On respective door mirror.
Electric Suction Fan Engine & AC With Integrated Control	Behind radiator.
Footwell Flap Actuator Motor (Left) (M2/10)	Left side of air conditioning housing. See Fig. 66.
Footwell Flap Actuator Motor (Right) (M2/11)	Right side of air conditioning housing. See Fig. 68.
Fresh Air/Air Recirculation Flaps Actuator Motor (M2/5)	Right side of air conditioning housing. See Fig. 68.
Front Door CL Motor (Left/Right)	Rear of respective front door.
Front Power Window Motor (Left/Right)	Center of respective front door.
Front Seat Backrest Ventilation Motor Group (Left/Right)	In respective front seat back.
Front Seat Cushion Ventilation Motor Group (Left/Right)	Under respective front seat.
Front Seat Height Adjustment Motor (Driver/Passenger)	Under respective front seat.
Fuel Filler Flap CL Motor	Behind fuel filler flap.
Fuel Pump (Left)	In left side of fuel tank.
Fuel Pump (M3)	In right side of fuel tank. See Fig. 21.
HCS Pump	On washer fluid reservoir.
Headlight Range Adjustment Motor (Left/Right)	Inside rear of respective headlight unit. See Fig. 59.
Head Restraint Motor (Driver/Passenger)	In respective front seat back.
High Pressure & Return Pump	Inside traction system hydraulic unit. See Fig. 6.
Inlet Port Shutoff Motor	Top center of engine. See Fig. 80.
Intelligent Servo Module (DIRECT SELECT)	Left rear of transmission housing. See Fig. 16.
Rear AC Additional Circulation Pump	Right front of engine compartment. See Fig. 72.
Rear Air Conditioning Blower Motor	Left side of cargo area.
Rear Air Conditioning Refrigerant Shutoff Motor	Left side of cargo area. See Fig. 76.
Rear Air Distribution Flap Actuator Motor (M2/21)	On booster blower assembly. See Fig. 67.
Rear Door CL Motor (Left/Right)	Rear of respective rear door.
Rear Door Hydraulic Pump	Left rear of cargo area. See Fig. 79.
Rear Power Window Motor (Left/Right)	Center of respective rear door.
Rear Seat Height Adjustment Motor (Driver/Passenger)	Under respective front seat.
Rear Shutoff Flap Actuator Motor (M2/12)	Right side of air conditioning housing. See Fig. 66.
Roller Sun Blind Drive Unit	Right front of roof. See Fig. 70.
Seat Fore/Aft Adjustment Motor (Driver/Passenger)	Under respective front seat.
Steering Column Forward/Back Motor	On steering column. See Fig. 77.
Steering Column Raise/Lower Motor	On steering column. See Fig. 78.
Tailgate Wiper Motor	Center of tailgate.
Throttle Valve Actuator (M272)	Rear of intake manifold. See Fig. 73.
Throttle Valve Actuator (M642)	Right front of engine. See Fig. 74.
Tilting/Sliding Roof (SR (SHD)) Drive Unit	Front center of roof.
Vent Window Motor (Left/Right)	In respective "D" pillar.
Windshield Washer Fluid Pump	On washer fluid reservoir.
Wiper Motor	Left rear of engine compartment.
3rd Seat Row Air Distribution Actuator Motor (M16/43)	On rear air conditioning unit. See Fig. 69.
3rd Seat Row Blending Air Flap Actuator Motor (M16/44)	On rear air conditioning unit. See Fig. 69.

Mercedes-Benz R350 2008 - SENDING UNITS & SENSORS

Mercedes-Benz R350 2008 SENDING UNITS & SENSORS LOCATION

Component	Location
Accelerator Pedal Sensor	Top of accelerator pedal assembly.
AIRmatic Pressure Sensor	Part of AIRmatic valve unit.
Ambient Temperature Display Temperature Sensor	Behind left side of front bumper.
BAS Diaphragm Travel Sensor	Part of BAS brake booster. See Fig. 7.
Body Lateral Acceleration Sensor (Left Front)	Top of left front shock tower. See Fig. 42.
Body Lateral Acceleration Sensor (Right Front) (Left Shown)	Top of right shock tower. See Fig. 42.
Body Lateral Acceleration Sensor (Right Rear)	At right side of cargo area. See Fig. 43.
Camshaft Hall Sensor	Top of right cylinder bank. See Fig. 24.
Center Rear Interior Temperature Sensor	Under center floor console. See Fig. 30.
Charge Air Temperature Sensor	Top right front of engine. See Fig. 41.
Charge Pressure Sensor	Right front of engine. See Fig. 23.
Coolant Temperature Sensor (M272)	Rear of left cylinder head. See Fig. 38.
Coolant Temperature Sensor (M642)	Top left side of engine. See Fig. 39.
Crankshaft Hall Sensor (M272)	Rear of left cylinder bank. See Fig. 55.
Crankshaft Hall Sensor (M642)	Left rear of engine. See Fig. 56.
Dew Point Sensor	Under right side of dash, near blower motor. See Fig. 40.
Emissions Sensor	Right rear corner of engine compartment.
ESP Brake Pressure Sensor	On brake master cylinder. See Fig. 49.
Evaporator Temperature Sensor	Under left side of dash. See Fig. 29.
Exhaust Back Pressure Sensor	Rear of engine, in exhaust. See Fig. 54.
Exhaust Camshaft Hall Sensor (Left)	Front of left cylinder bank. See Fig. 27.
Exhaust Camshaft Hall Sensor (Right)	Front of right cylinder bank. See Fig. 28.
Footwell Rear AC Temperature Sensor	Left rear of cargo area. See Fig. 37.
Footwell Temperature Sensor (Left)	Under left center of dash. See Fig. 35.
Footwell Temperature Sensor (Right)	Under right center of dash. See Fig. 36.
Frontal Acceleration Sensor (Driver-Side)	Left front of engine compartment. See Fig. 50.
Frontal Acceleration Sensor (Passenger-Side) (Driver Side Shown)	Right front of engine compartment. See Fig. 50.
Fuel Filter Water Level Sensor	Top center of engine. See Fig. 57.
Fuel Level Sensor (Left) (B4/1)	In left side of fuel tank. See Fig. 21.
Fuel Level Sensor (Right) (B4/2)	In right side of fuel tank. See Fig. 21.
Fuel Tank Pressure Sensor	In fuel tank.
Fuel Temperature Sensor	Top left front of engine. See Fig. 53.
Hall Sensor 1 (Sliding Roof)	Integral to tilting/sliding roof drive unit.
Hall Sensor 2 (Sliding Roof)	Integral to tilting/sliding roof drive unit.
Hot Film MAF Sensor (M272)	Center rear of engine. See Fig. 18.
Hot Film MAF Sensor (Left) (M642)	Top right side of engine. See Fig. 19.
Hot Film MAF Sensor (Right) (M642)	Top left side of engine. See Fig. 20.
Intake Camshaft Hall Sensor (Left)	Front of left cylinder bank. See Fig. 25.
Intake Camshaft Hall Sensor (Right)	Front of right cylinder bank. See Fig. 26.
Intake Manifold Tumble Flap Position Sensor (Left )	Left rear of intake manifold. See Fig. 48.
Intake Manifold Tumble Flap Position Sensor (Right) (Left Shown)	Right rear of intake manifold. See Fig. 48.
Internal Speed Sensor (VGS) (Y3/8n2)	Part of electric control unit (VGS). See Fig. 129.
Left Knock Sensor 2	Top of engine, between cylinder banks.Fig. 10.
Level Sensor (Left Front)	In left front wheelwell.
Level Sensor (Left Rear)	In left rear wheelwell.
Level Sensor (Right Front)	In right front wheelwell.
Level Sensor (Right Rear)	In right rear wheelwell.
Micromechanical Turn Rate Sensor	On floor, under right front seat. See Fig. 44.
Obstruction Sensor Strip (Left Vent Window)	Above left vent window.
Obstruction Sensor Strip (Right Vent Window)	Above right vent window.
Oil Temperature Sensor	Left side of engine oil pan. See Fig. 17.
Outlet Temperature Sensor (Left Center)	Behind center of dash. See Fig. 34.
Outlet Temperature Sensor (Left Side)	Behind left side of dash. See Fig. 32.
Outlet Temperature Sensor (Right Center) (Left Shown)	Behind center of dash. See Fig. 34.
Outlet Temperature Sensor (Right Side)	Behind right side of dash. See Fig. 33.
Output Speed Sensor (VGS) (Y3/8n3)	Part of electric control unit (VGS). See Fig. 129.
O2 Sensor Downstream TWC (KAT) (Left)	Left of transmission.
O2 Sensor Downstream TWC (KAT) (Right)	Right of transmission.
O2 Sensor Upstream TWC (KAT) (Left)	Left of transmission.
O2 Sensor Upstream TWC (KAT) (Right)	Right of transmission.
O2 Sensor 1 Upstream TWC (KAT)	Under right side of engine.
Pressure Differential Sensor (DPF)	On rear of differential. See Fig. 47.
Pressure Sensor (Air Cleaner) (M642)	Downstream of air cleaner. See Fig. 46.
Pressure Sensor (M272)	Top left side of engine. See Fig. 45.
PTS Ultrasonic Sensor (Front - Center Left)	Left side of front bumper.
PTS Ultrasonic Sensor (Front - Center Right)	Right side of front bumper.
PTS Ultrasonic Sensor (Front - Inner Left)	Left center of front bumper.
PTS Ultrasonic Sensor (Front - Inner Right)	Right center of front bumper.
PTS Ultrasonic Sensor (Front - Outer Left)	Left corner of front bumper.
PTS Ultrasonic Sensor (Front - Outer Right)	Right corner of front bumper.
PTS Ultrasonic Sensor (Rear - Inner Left)	Left side of rear bumper.
PTS Ultrasonic Sensor (Rear - Inner Right)	Right side of rear bumper.
PTS Ultrasonic Sensor (Rear - Outer Left)	Left corner of rear bumper.
PTS Ultrasonic Sensor (Rear - Outer Right)	Right corner of rear bumper.
Rail Pressure Sensor	Rear of right fuel rail. See Fig. 22.
Rear Air Conditioning Evaporator Temperature Sensor	On rear HVAC unit. See Fig. 31.
Rear-End Door Closing Obstruction Sensor Strip (Left/Right)	At respective "D" pillar.
Rear Headroom AC Temperature Sensor	Above right rear wheelwell.
Refrigerant Pressure Sensor	Left front of engine compartment.
Right Knock Sensor 1	Top of engine, between cylinder banks. See Fig. 9.
Selection Range Sensor (VGS) (Y3/8s1)	Part of electric control unit (VGS). See Fig. 129.
Side Airbag Sensor (Left)	Base of left "B" pillar. See Fig. 13.
Side Airbag Sensor (Right)	Base of right "B" pillar. See Fig. 13.
Steering Angle Sensor	Part of steering column module.
Sun Sensor	Top center of dash.
Sun Sensor (Dual)	Top center of dash.
Temperature Sensor (Diesel Particulate Filter)	Upstream of diesel particulate filter.
TPM (RDK) Wheel Sensor (4)	Inside wheels. See Fig. 14.
Transmission Oil Temperature Sensor (VGS) (Y3/8s2)	Part of electric control unit (VGS). See Fig. 129.
Turbine Speed Sensor (VGS) (Y3/8n1)	Part of electric control unit (VGS). See Fig. 129.
TWC (KAT) Temperature Sensor	In exhaust, right of transmission.
Wheel Speed Sensors (4)	On respective wheel hub assemblies.
WSS Sensor (Weight Sensing System) (Left/Right Front)	Under respective front corner of front passenger's seat. See Fig. 51.
WSS Sensor (Weight Sensing System) (Left/Right Rear)	Under respective rear corner of front passenger's seat. See Fig. 52.

Mercedes-Benz R350 2008 - SOLENOIDS & SOLENOID VALVES

Mercedes-Benz R350 2008 SOLENOIDS & SOLENOID VALVES LOCATION

Component	Location
A/C Compressor	Left front of engine.
Activated Charcoal Filter Shutoff Valve	In right rear wheelwell. See Fig. 138.
AIRmatic Central Reservoir Charge Valve	Part of AIRmatic valve unit.
AIRmatic Valve Unit	Behind right side of front bumper.
Automatic Rear-End Door Closing Control Valve	Left side of cargo area.
Axle Damping Valve Unit (Front - Left/Right)	In respective front wheelwell.
Axle Damping Valve Unit (Rear - Left/Right)	In respective rear wheelwell.
BAS Solenoid Valve	Part of brake booster. See Fig. 7.
B1 Brake Control Solenoid Valve (VGS) (Y3/8y5)	Part of electric control unit (VGS). See Fig. 129.
B2 Brake Control Solenoid Valve (VGS) (Y3/8y6)	Part of electric control unit (VGS). See Fig. 129.
B3 Brake Control Solenoid Valve (VGS) (Y3/8y7)	Part of electric control unit (VGS). See Fig. 129.
Front Axle Inlet Solenoid Valve	Inside traction system hydraulic unit. See Fig. 6.
Front Axle Switchover Solenoid Valve	Inside traction system hydraulic unit. See Fig. 6.
Front Level Control Valve (Left/Right)	Part of AIRmatic valve unit.
Front Level Control Valve (Left/Right)	Part of AIRmatic valve unit.
Fuel Injectors 1, 2 & 3	Top right side of engine, above cylinders. See Fig. 139.
Fuel Injectors 1, 2 & 3 (No. 1 Shown)	Top right side of engine, above cylinders. See Fig. 141.
Fuel Injectors 4, 5 & 6	Top left side of engine, above cylinders. See Fig. 139.
Fuel Injectors 4, 5 & 6 (No. 4 Shown)	Top left side of engine, above cylinders. See Fig. 142.
Heating System Shutoff Valve	Rear of engine.
High Beam Solenoid (Left/Right)	Behind respective headlight assembly. See Fig. 58.
Intake Manifold Tumble Flap Switchover Valve	On front of engine. See Fig. 131.
K1 Clutch Control Solenoid Valve (VGS) (Y3/8y2)	Part of electric control unit (VGS). See Fig. 129.
K2 Clutch Control Solenoid Valve (VGS) (Y3/8y3)	Part of electric control unit (VGS). See Fig. 129.
K3 Clutch Control Solenoid Valve (VGS) (Y3/8y4)	Part of electric control unit (VGS). See Fig. 129.
Left Camshaft Exhaust Solenoid	Left front of engine. See Fig. 135.
Left Camshaft Intake Solenoid	Left front of engine. See Fig. 133.
Left Exhaust Gas Recirculation Positioner	Left rear of engine. See Fig. 132.
Left Front Axle Solenoid Valve (Release)	Inside traction system hydraulic unit. See Fig. 6.
Left Rear Axle Solenoid Valve (Hold)	Inside traction system hydraulic unit. See Fig. 6.
Left Rear Axle Solenoid Valve (Release)	Inside traction system hydraulic unit. See Fig. 6.
NECK-PRO Head Restraint Solenoid (Driver/Passenger)	Inside respective front seat back.
Power Steering Pump Pressure Regulator Valve	Lower left front of engine.
Pressure Regulator Valve	Top left front of engine. See Fig. 140.
Purge Control Valve	Left front of engine compartment. See Fig. 137.
Rear Axle Inlet Solenoid Valve	Inside traction system hydraulic unit. See Fig. 6.
Rear Axle Level Control Electric Valve Unit	Right front of engine compartment.
Rear Axle Switchover Solenoid Valve	Inside traction system hydraulic unit. See Fig. 6.
Right Camshaft Exhaust Solenoid	Right front of engine. See Fig. 136.
Right Camshaft Intake Solenoid	Right front of engine. See Fig. 134.
Right Front Axle Solenoid Valve (Hold)	Inside traction system hydraulic unit. See Fig. 6.
Right Front Axle Solenoid Valve (Release)	Inside traction system hydraulic unit. See Fig. 6.
Right Rear Axle Solenoid Valve (Hold)	Inside traction system hydraulic unit. See Fig. 6.
Right Rear Axle Solenoid Valve (Release)	Inside traction system hydraulic unit.
SPS (PML) Solenoid Valve	In left front wheelwell.
Three-Disk Thermostat Valve	Front of engine, part of thermostat.
Torque Converter Lockup Clutch Control Solenoid Valve (VGS) (Y3/8y8)	Part of electric control unit (VGS). See Fig. 129.
Variable Intake Manifold Switchover Valve	On front of engine. See Fig. 130.
Volume Control Valve	Left front of engine. See Fig. 144.
Working Pressure Control Solenoid Valve (VGS) (Y3/8y1)	Part of electric control unit (VGS). See Fig. 129.

Mercedes-Benz R350 2008 - SWITCHES

Mercedes-Benz R350 2008 SWITCHES LOCATION

Component	Location
ATA (EDW) Hood Switch	Right front of engine compartment. See Fig. 104.
BAS Release Switch	Part of brake booster. See Fig. 7.
Brake Fluid Indicator Switch	In brake fluid reservoir. See Fig. 101.
Coolant Level Indicator Switch	Right front of engine compartment. See Fig. 103.
Driver Seat Belt Buckle & Seat Belt Warning Switch	In driver's seat belt buckle.
Front Passenger Seat Belt Buckle & Seat Belt Warning Switch	In right front seat belt buckle.
Oil Level Switch	In left side engine oil pan.
Parking Brake Indicator Switch	Above parking brake. See Fig. 102.
Right Front Brake Pad Contact Sensor	On right front brake assembly.
Right Rear Brake Pad Contact Sensor	On right rear brake assembly.
Windshield Washer Fluid Level Indicator Switch	In washer fluid reservoir.

Mercedes-Benz R350 2008 - MISCELLANEOUS

Mercedes-Benz R350 2008 MISCELLANEOUS LOCATION

Component	Location
Alarm Signal Horn	Right rear corner of engine compartment.
Auxiliary Battery	Right front footwell.
Battery	Under right front seat.
Belt Force Limiter (Driver/Passenger)	Base of respective "B" pillar.
Buckle ETR Squib (Driver/Passenger)	Under inner side of respective front seat.
Central TPM (RDK) Antenna	Under right center of vehicle.
Cockpit Keyless Go Antenna	Under front of center floor console. See Fig. 4.
Coolant Thermostat Heating Element	Top front of engine. See Fig. 100.
Cylinder 1, 2 & 3 Ignition Coils	Top of right cylinder bank.
Cylinder 4, 5 & 6 Ignition Coils	Top of left cylinder bank.
Data Link Connector (DLC)	Below left side of dash.
Driver Airbag Ignition Squibs 1 & 2	In steering wheel.
Electronic Compass	Behind instrument cluster.
E-Net Compensator	Left rear of cargo area. See Fig. 11.
Fanfare Horns & Airbag Clock Spring Contact	Inside steering wheel hub. See Fig. 12.
Fanfare Horns (Left/Right)	Behind center of front bumper.
FM Rear Window Antenna Amplifier	Left side of tailgate. See Fig. 2.
Front Passenger Airbag Ignition Squibs 1 & 2	Behind right side of dash.
Front Reversible Emergency Tensioning Retractor (Left)	Base of left "B" pillar. See Fig. 15.
Front Reversible Emergency Tensioning Retractor (Right)	Base of right "B" pillar. See Fig. 15.
Glowtime Output Stage	Top front of engine. See Fig. 84.
GPS Antenna Splitter	In left rear footwell.
Heater Booster	Behind center of dash. See Fig. 98.
Interference Filter 1	Top center of tailgate.
Interior Keyless Go Antenna	Center rear of floor. See Fig. 5.
Keyless Go Left Rear Door Antenna	In left rear door.
Keyless Go Right Rear Door Antenna	In right rear door.
Keyless Go Trunk Antenna	Left side of tailgate. See Fig. 3.
Radio Interference Suppression Capacitor 1	Top right side of engine.
Radio Interference Suppression Capacitor 2	Top left side of engine.
Rear TPM [RDK] Wheel Antenna (Left/Right)	Front of respective rear wheelwell.
Roof Antenna Module	Center rear of roof.
Side Airbag Squib (Driver/Passenger)	In respective outer side of front seat back.
Sound System Amplifier	Under driver's seat.
TELE AID Spare Antenna	Left side of cargo area.
Vent Line Heater Element	Top center of engine. See Fig. 99.
Window Airbag Squib (Left/Right)	Behind respective end of dash. See Fig. 96.
Xenon Headlamp Ignition Module (Left/Right)	Top of respective headlight unit. See Fig. 60.
2nd Row ETR (GUS) Squib (Left/Right)	In respective "C" pillar. See Fig. 95.
2nd Row Side Airbag Ignition Squib (Left/Right)	In respective outer side of 2nd seat row seat back.
3rd Row ETR [GUS] Squib (Left/Right)	In respective "D" pillar. See Fig. 97.

Mercedes-Benz R350 2008 - CONNECTORS

Mercedes-Benz R350 2008 CONNECTORS LOCATION

Component	Location
X8/16	In left rear door.
X8/17	In right rear door.
X8/34	In left front door.
X8/35	In right front door.
X8/36	In left rear door.
X8/37	In right rear door.
X18	Behind right kick panel. See Fig. 123.
X22/6	Rear of engine compartment. See Fig. 124.
X25/2	Under right side of dash. See Fig. 125.
X26	Top left side of engine. See Fig. 126.
X26/32	Left front of engine compartment. See Fig. 127.
X29/6	Under rear of center console. See Fig. 128.
X35/1	Behind left kick panel.
X35/2	Behind right kick panel.
X35/3	In left "B" pillar.
X35/4	In right "B" pillar.
X38/1	Under front of center console.

Mercedes-Benz R350 2008 - GROUNDS

Mercedes-Benz R350 2008 GROUNDS LOCATION

Component	Location
W2	Right front wheelwell. See Fig. 105.
W2/1	Right front wheelwell. See Fig. 106.
W6	Left rear of cargo area. See Fig. 107.
W7	Right rear of cargo area. See Fig. 108.
W8	Lower right side of tailgate.
W8/1	Upper left of tailgate.
W8/2	Upper right of tailgate.
W9	At left headlight unit. See Fig. 109.
W10	Under right front seat. See Fig. 110.
W11	Top right front of engine. See Fig. 111.
W11w1	Rear of right cylinder bank. See Fig. 112.
W11w2	Rear of left cylinder bank. See Fig. 113.
W15/1	In right front footwell. See Fig. 114.
W15/2	In left front footwell. See Fig. 115.
W16/3	Left rear of engine compartment. See Fig. 116.
W16/4	Right rear of engine compartment. See Fig. 117.
W17	In right rear footwell. See Fig. 118.
W17/1	In left rear footwell. See Fig. 119.
W26	Under front of center console. See Fig. 120.
W29/2	Behind right kick panel. See Fig. 121.
W29/8	Top of left "D" pillar.
W29/9	Top of right "D" pillar.
W48/3	Top of right "D" pillar.
W70	In left front wheelwell. See Fig. 122.

Mercedes-Benz R350 2008 - SPLICES

Mercedes-Benz R350 2008 SPLICES LOCATION

Component	Location
Z1	Top center of engine.
Z2	Top left rear of engine.
Z2z1	Top center of engine.
Z3/11	Behind center of dash.
Z4	Top left side of engine.
Z5	Top right side of engine.
Z5z2	Top right side of engine.
Z6/12	In left rear door.
Z6/13	In right rear door.
Z6/14	Under front of center console.
Z6/15	Under front of center console.
Z6/26	Top right side of engine.
Z6/35	In driver's door.
Z6/36	In right front door.
Z6/48	Top left rear of engine.
Z6/48z1	Top right side of engine.
Z6/48z2	Top left rear of engine.
Z6/62	Behind right kick panel.
Z7/5	Top left rear of engine.
Z7/35z1	Top right side of engine.
Z7/35z2	Top left side of engine.
Z7/36z1	Top right side of engine.
Z7/36z2	Top left side of engine.
Z7/38z1	Top right side of engine.
Z7/38z2	Top right side of engine.
Z7/43 (M272)	Top right side of engine.
Z7/43 (M642)	Top right rear of engine.
Z7/44	Top rear of engine.
Z9	Right front of engine.
Z21	Behind right kick panel.
Z28/44	At left rear doorsill.
Z35/7	Behind center of dash.
Z35/8	Behind center of dash.
Z36/1	Behind left side of rear bumper.
Z36/2	Behind left side of rear bumper.
Z36/3	Behind right side of front bumper.
Z36/4	Behind right side of front bumper.
Z36/12	Right rear of engine compartment.
Z36/14	Right rear of engine compartment.
Z37/69	Right rear of engine compartment.
Z37/70	Right rear of engine compartment.
Z43	Left side of tailgate.
Z50/1	Behind right side of dash.
Z50/3	Behind left side of dash.
Z50/4	Behind right side of dash.
Z50/5	Behind right kick panel.
Z50/36	Behind left side of dash.
Z51/6	In right front footwell.
Z53/25	In right rear footwell.
Z53/26	In right rear footwell.
Z55/1	Right side of tailgate.
Z56/13	In right front wheelwell.
Z56/14	In right front wheelwell.
Z56/15	In right front wheelwell.
Z61/10	In driver's seat back.
Z61/11	In right front seat back.
Z68/1	Behind center of dash.
Z68/1z2	Left rear of cargo area.
Z68/2	Behind center of dash.
Z68/5	Under front of center console.
Z68/6	Under front of center console.
Z68/7	Behind center of dash.
Z68/8	Left rear of cargo area.
Z68/9	Under center console.
Z100/2	In left rear footwell.
Z204/3	In right rear footwell.
Z204/4	In right front footwell.
Z204/5	Behind left kick panel.
Z204/6	In left rear footwell.
Z204/9	In left rear footwell.