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Mercedes-Benz E-Class w123 (1976 - 1985) Fuse Box Diagram

avatar Jonathan Yarden Mar 25, 2021 · 5 min. read

In this article you will find a description of fuses and relays Mercedes-Benz, with photos of block diagrams and their locations. Highlighted the cigarette lighter fuse (as the most popular thing people look for).
Get tips on blown fuses, replacing a fuse, and more.

Year of production: 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985

Fuse box

Mercedes-Benz C-Class w123 - fuse box diagram

Fuse A Circuit protected
A 16 Window Lift (Front Right/Rear Left)
B 16 Window Lift (Front Left/Rear Right)
C 16 Auxiliary Fan, Exploid Engine Residual Heat (123 545 ??00)
25 Auxiliary Fan, Auxiliary Heating, Exploid Engine Residual Heat (123 545 ??00)
D 16 Sliding Roof
1 8 Parking and Tail Light Right, License Plate / Instrument / Hazard Warning Switch / Heater and Ventilation Controls (Rocker Switches / Shift Indicator / Electronic Radio) Illumination, Headlamp Cleaning Unit (123 545: 0200, 0500), Side Marker Lamps (123 545 0100), Warning Buzzer (123 545: 0400, 0800)
2 8 Clock, Trunk Light, Diagnostic, Roof Light Front and Rear, Hazard Warning System, Warning Monitor Terminal 5 / SF, Automatic Antenna, Switch-over Valve Seat Back Arrester, Illuminated Vanity Mirror, Standing Light Left and Right (123 545 0100), Electronic Radio, Relay II Power Windows Terminal 86+87 (123 545: 0200, 0500)
3 8 Parking and Tall Light Left
4 8 Cigarette Lighter, Glove Compartment Light, Radio, Outside Mirror (123 545: 0800, 1100)
16 Seat heater front, Cigarette Lighter, Glove Compartment Light, Radio, Outside Mirror (123 545: 0800, 1100)
5 8 123 545 0100: Air Conditioning Compressor Switch, Over Valve Idle Stabilization
123 545: 0200, 0500: Fog Light
123 545 ??00: Fog Light, Rear Fog Light
6 16 Windshield Wiper and Washer, Optical Horn, Relay Headlamp Cleaning Unit (123 545: 0200, 0500)
7 8 High Beam Right, High Beam Indicator (123 545: 0100, 0200)
8 16 Blower Motor, Air Conditioning Compressor, Switch Over Valve Idle Stabilization (123 545: 0400, 0500, 0600, 0800), Circulating Pump Climate Control (123 545: 0400, 0500), Exploid Engine Residual Heat (123 545 ??00)
123 545: 0100, 0200: Heated Rear Window
25 123 545: 0100, 0200: Heated Rear Window, Seat Heating Rear
123 545 ??00: Climate Control System, Blower Motor, Air Conditioning Compressor, Switch Over Valve Idle Stabilization, Circulating Pump Climate Control, Exploid Engine Residual Heat
9 8 High Beam Left, High Beam Indicator (123 545: 0400, 0500, 0600, 0800, 1100)
10 16 Heated Rear Window, Auxiliary Heating Rear (123 545: 1100, ??00), Electromagnetic Clutch Engine Fan (123 545: 0400, 0500, ??00)
123 545: 0100, 0200: Blower Motor
25 123 545: 0100, 0200: Seat Heating Rear, Heated Rear Window, Auxiliary Heating Rear (123 545: 1100, ??00), Electromagnetic Clutch Engine Fan (123 545: 0400, 0500, ??00)
11 8 Low Beam Right, Fog Light
12 8 Stop lamp, Turn signal lamp, Instrument Cluster, Cruise Control, Relay Window Lift Terminal 86, Tachometer, Relay Auxiliary Fan Terminal 86 (123 545: 0100, 0200, 0400), Control Unit/Heating Water Valve for Climate Control System (123 545 0400), Switch Over Valve Idle Stabilization (123 545 0200), Air Conditioning Compressor (123 545 0200), Relay II Power Windows Terminal 87 a (123 545: 0200, 0500), Climate Control System (123 545 ??00)
13 8 Low Beam Left
14 8 Back-up Lamp, Warning Monitor Terminal 8 / 15, Emission Control, Horn, Fanfares, Overload Protection, Automatic Transmission, Relay Auxiliary Fan Terminal 86, Control Unit/Water Pump/ and Heating Water Valve for Climate Control System, Carburetor Heater (123 545: 0100, 0200, ??00), Exploid Engine Residual Heat Terminal 15 (123 545 ??00), Temperature Gauge Outside (123 545 ??00), Float Chamber Vent Valve (123 545 ??00), Idle Cut-off Valves

Fusecard

123 545 01 00

Mercedes-Benz C-Class w123 - fuse box diagram - fusecard - 123 545 01 00

123 545 02 00

Mercedes-Benz C-Class w123 - fuse box diagram - fusecard - 123 545 02 00

123 545 04 00

Mercedes-Benz C-Class w123 - fuse box diagram - fusecard - 123 545 04 00

123 545 05 00

Mercedes-Benz C-Class w123 - fuse box diagram - fusecard - 123 545 05 00

123 545 06 00

Mercedes-Benz C-Class w123 - fuse box diagram - fusecard - 123 545 06 00

123 545 08 00

Mercedes-Benz C-Class w123 - fuse box diagram - fusecard - 123 545 08 00

123 545 11 00

Mercedes-Benz C-Class w123 - fuse box diagram - fusecard - 123 545 11 00

 

Mercedes-Benz C-Class w123 - fuse box diagram - fusecard

WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.

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