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Component Locations

The locations of the various electrical components on the W124 is described in a series of 27 PDF documents from the manual/service CD (Supplement 14).

The list below shows which component is in which document, their description (if available), and which figure it's in.

Press the button below the lists to download or view the PDF, depending on your browser.

There is not a search function yet, but you can use ctrl+f in most browsers to find the component you are looking for.

Page 229

Component Description Figure
X132 1
Y19 Mono Valve 1
W10 1
X(L6/2) 2
X4/10 2
N3 CIS-E Control Unit 3
N16/3 (Manual), N16/4 (Automatic) Fuel Pump Relay 3
X36 3
X4/13 4
R17/1 Reference Resistor 4
B18 Altitude Correction Capsule 4
S42 Washer Fluid Level Switch 5
S41 Coolant Level Switch 5
S5/3 High Voltage Distributor 6
G2 Alternator 6
Download/Open Page 229

Page 230

Component Description Figure
M6/3 Right Headlamp Wiper Motor 1
W2 1
M5/2 Headlamp Washer Pump 2
M5/1 Windshield Washer Pump 2
B11/2 Coolant Temperature Sensor(EZL/CIS-E) 3
B13 Coolant Temperature Gauge Sensor 3
S25/5 Temperature Switch 105/115 degree celcius 3
A9k1 A/C Compressor Cluch Electromagnetic 4
A9l1 AC Compressor RPM Sensor 4
W5 4
X(L4) 4
M6/2 Left Headlamp Wiper Motor 5
W9 5
S31 Refrigirant Low Pressure Switch 6
S31/1 Two Function Refrigirant Switch 6
X(S32/2) 6
X(S32/1) 6
S32 Refrigerant High Pressure Switch 6
X(M4) 6
Download/Open Page 230

Page 231

Component Description Figure
H3 Alarm Horn 1
T1 Ignition Coil 1
A7 ABS Hydraulic Unit 2
R15 Auxillary Fan Preresistor 2
W14 2
X27 3
S11 Brake Fluid Level Switch 3
R16/1 Reference Resistor (EZL) 3
F1 Fuse/Relay Box 4
S62 Hood Switch 4
K4 Power Window Relay 5
K9 Auxillary Fan Relay 5
X(L6/1) 5
Y6 Idle Speed Air Valve 6
Y8 Starting Valve 6
S29/2 Throttle Valve Switch 6
Download/Open Page 231

Page 232

Component Description Figure
B2 Air Flow Sensor Position Indicator 1
S27/2 Deceleration Shut-off Microswitch 1
M4 Auxiliary Fan 2
H1 Two-Tone Horns 2
B10/5 Outside Temperature Sensor 3
M3 Blower Motor Location 3
M6/1 Wiper Motor 3
R2/2 Left Heated Windshield Washer Nozzle 4
W6 5
M12/2 Sliding/Pop-Up Roof Motor 5
M11 Automatic Antenna 5
M25 Left Front Power Seat Motor Group 6
N32/3 Left Front Seat Memory Control Unit 6
Download/Open Page 232

Page 233

X18 5
M20 Telescopic Steering Column Motor 6
B10/6 Evaporator Temperature Sensor 6
X (B10/6) 6
Download/Open Page 233

Page 234

Component Description Figure
S8/1 Warning Buzzer Switch 1
S8/2 Warning Buzzer Switch 1
S2/1 Ignition Starter Switch(Gasoline) 1
S2/2 Glow/Starter Switch (Diesel) 1
X63 2
X49/2 2
X20 2
X30 (Below Carpet) 2
N4 Cruise Control Amplifier 3
X(S40) 3
S1 Exterior Lamp Switch 3
S12 Parking Brake Switch 4
X46 4
X4 4
W3 5
X(M16) 5
X11 Diagnostic Socket / Terminal Block 5
Y1 Electro-Hydraulic Actuator (EHA) 6
X56 6
Download/Open Page 234

Page 235

Component Description Figure
B10/4 In-Car Temperature Sensor 1
W4 1
X(R11) 2
R11 2
S47 Left Front Door Actuator 3
S17/3 Left Door Switch 4
S17/1 Left Door Switch 4
S17/7 Left Door Switch 4
X(M10/3) 4
W1 5
W7 6
Download/Open Page 235

Page 236

Component Description Figure
Slip Ring Assembly 1
R12/3 Air Bag Squib 1
R12/2 Right Front Emergency Tensioning Retractor (ETR) Squib 2
S17/8 Trunk Lamp Switch 3
X(S62/1) (LH) 4
X(S62/2) (RH) 4
K11/2 Right Head Restraint Adjustment Relay 5
M26 Right Front Power Seat Motor Group 5
X55/1 5
S49 Trunk Lid Lock Actuator 6
Download/Open Page 236

Page 237

Component Description Figure
W13 1
X88/5 2
L6 3
Y3 4
G3/2 5
Oil Filter Oil Filter 6
B5 Oil Pressure Sensor 6
M1 Starter 6
Download/Open Page 237

Page 238

Component Description Figure
S16/1 Starter Lock-Out / Backup Lamp Switch 1
M16 Cruise Control Actuator 2
S43 Oil Level Switch 2
L6/1 Left Front Wheel Speed Sensor 3
B14 Outside Temperature Sensor 4
M3/1 Fuel Pump 5
M3/2 Fuel Pump 5
B4 Fuel Level Sensor 6
Download/Open Page 238

Page 239

Component Description Figure
S16/6 Kick-Down Switch 1
N25/1 Left Front Seat Heater Relay 2
N30 ABS Control Unit 3
N6 A/C Compressor Control Unit 3
K1 Overvoltage Protection Relay (OVP) 3
K1/1 Overvoltage Protection Relay (OVP) 3
X(M6/3) 4
X(B14) 5
X26 5
Fuse 12 In Line Fuse 5
X24 5
X42/15 5
L1 TDC Sensor 6
Download/Open Page 239

Page 240

Component Description Figure
N24 SRS Voltage Converter 1
X42/10 1
N26 Anti-Theft Alarm Control Unit 1
N2/2 Supplemental Restraint System (SRS) Control Unit 2
W12 2
B10/1 Heater Core Temperature Sensor 3
N2/4 Warning Module 4
X53/5 4
N40 Instrument Illumination Control Unit 4
S9 Stop Lamp Switch 5
M10/3 Left Front Power Window Motor 6
Download/Open Page 240

Page 241

Component Description Figure
X6/1 1
M5/2 Headlight Washer Pump 2
S42 Washer Fluid Level Switch 2
M5/1 Windshield Washer Pump 2
X25 2
X29/4 Test Connection (EDS) 3
X132 3
Y19 Monovalve 3
W10 3
X(A12) 4
N13 Interval Wiper Relay 5
S49 Tailgate Lock Actuator 5
W8 5
X8 6
Download/Open Page 241

Page 242

Component Description Figure
M12 Sliding / Pop-Up Roof Drive Unit 1
W6 1
X(E3) 2
X(E4) 3
M11 Automatic Antenna 3
M5/3 Rear Window Washer Pump 4
X(M16) 5
Y30 Engine Overload Protection Switch-Over Valve 5
H3 Alarm Horn 5
S25/11 Temperature Switch 105 / 120 degree celcius 6
B11 Coolant Temperature Sensor (EDS) 6
Download/Open Page 242

Page 243

Component Description Figure
L7 Fuel Rack Positon Sensor 1
B13 Coolant Temperature Gauge Sensor 1
Y31 Air Recirculating Valve Vacuum Transducer 2
T31/1 EGR Valve Vacuum Transducer 2
B2/1 Air Flow Sensor 2
R18/1 Resistance Trimming Plug 3
X27 3
S11 Brake Fluid Level Switches 3
S27/1 A/C Compressor Cut-Out Microswitch 4
A12 Tailgate Closing Assistant 5
X(S62/3) 5
M6/4 Rear Window Wiper Motor 5
X42/11 6
X86 6
Download/Open Page 243

Page 244

Component Description Figure
L3 Ring Gear Speed Sensor 1
B5 Oil Pressure Sensor 1
S16/2 Backup Lamp Switch 2
SRS Energy Accumulator 3
X42 3
X11/13 3
S66 Engine Overload Protection Switch 4
Y22 Electro Magnetig Actuator 4
Y29 Vacuum Amplifier Switch-Over Valve 5
N14 Preglow Relay 5
X42/13 Connector ATA/Radio 6
Download/Open Page 244

Page 245

Component Description Figure
X55 1
X11/4S1 Pushbutton Switch With LED (Calif.) 2
X11/4 Test Connection For Diagnosis 2
X26/6 Connector, Engine / ACC Harness 3
B10/8 Coolant Temperature Sensor 4
F15 Auxiliary Fuse Holder, Blower Motor 5
M24 Rear Window Sunshade Motor 6
Download/Open Page 245

Page 246

Component Description Figure
N25/5 Front Seat Heater Controll Unit 1
Connector Right Front Door Contact Switch 2
Heated Windshield Washer Nozzle Thermoswhitch 3
R2/6 Heated Check Valve 4
R2/5 Right Heated Windshield Washer Nozzle Hose 4
R2/4 Left Heated Windshield Washer Nozzle Hose 4
R2/7 Heated Windshield Washer Pump Hose 4
A10 Left Seat Belt Extender 5
N4 Left Seat Belt Extender Controll Unit 6
Download/Open Page 246

Page 247

Component Description Figure
R12/4 Front Passenger Air Bag Squib 1 1
R12/5 Front Passenger Air Bag Squib 2 1
L7 2
B5/1 3
Y31/1 4
Y31/2 4
Y31/4 4
N39 5
K1/1 5
B11/7 6
Download/Open Page 247

Page 248

Component Description Figure
Y32 1
Y27 1
B11/4 2
B17/7 3
X36/3 4
K27 4
Y31/1 5
Y27 5
Y27/5 5
Y27/4 5
S27/3 6
Download/Open Page 248

Page 249

Component Description Figure
B2/1 1
B2/2 2
Y62 2
B11/2 2
L5/1 2
Y49/1 2
Y49/2 2
L5 3
Y3/3 4
X11/4 5
X11/21 5
X11/21s1 5
K29 6
R33 6
R17/2 6
X4/10 6
Download/Open Page 249

Page 250

Component Description Figure
X11/4 1
X62/6 1
N3/1
N4/1 1
N30/1 1
N16/1 1
F2 1
W16 1
W27 1
Y33 2
T1/1 3
T1/2 3
A16 4
L5/1 5
S5/5 5
S5/6 5
Y49 6
L5/1 6
Download/Open Page 250

Page 251

Component Description Figure
N1/2 1
N1/3 1
Y3/2 2
S65 2
S7/3 Test Function 4Matic 3
S29/3 4
K12/1 5
R25 6
Download/Open Page 251

Page 252

Component Description Figure
K1/2 1
N30/2 1
X62/3 2
Y38 3
A7/3 4
N30/1 5
K1/2 5
N4/1 5
X62/8 6
Download/Open Page 252

Page 253

Component Description Figure
M15 1
Y58/1 2
N1/2 2
N1/3 2
X89/2 3
X89/1 3
L2 4
M2/2 5
F23 5
C2 6
X4/10 6
Download/Open Page 253

Page 254

Component Description Figure
N35 1
N40/2 2
N40/1 2
N40/2 3
N40/1 3
A35/3 4
A35 5
F22/2 6
Download/Open Page 254

Page 255

Component Description Figure
A28/1 1
M11 1
N16 2
M4m2 3
M4m1 3
Download/Open Page 255

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