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Mercedes-Benz S Class w126 300SD (1983) - fuse box diagram USA version

avatar Jonathan Yarden Oct 06, 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: 1983

Fuse box

Mercedes S Class w126 300SD - fuse box

Fuse Ampere rating [A] Colour Circuit protected
a 16 red Window lift front right, rear left
b 16 red Window lift front left, rear right
c 16 red Auxiliary fan
d 25 blue Front seat adjustment seat cushion rear high – low resp. fronht high – low (memory) seat back adjustment
1 8 white Parking/tail light right, warning buzzer, license plate/instrument/hazard warning switch/heater and ventilation controls/rocker switches illumination, (electronic radio illumiantion)
2 8 white High beam right, high beam indicator
3 8 white Parking/tail light left
4 8 white High beam left
5 25 blue Front seat adjustment, seat cushion front how-low respect rear high-low (memory), fore-alt
6 16 red Low beam right, fog light
7 16 red Windshieldwiper and washer, optical horn, outside mirror, relay window lift term. 86
8 8 white Low beam left
9 8(16)* white(red)* Cigar lighter, glove compartment light, radio, heating system for washer jets (seat heating front)*
10 8 white Control unit, water pump, heating water valve, blower motor inside temperatur sensor for automatic climate control system, back-up lamp, overload protection, autom. transmission, relay auxiliary fan term. 86, overload protection
11 25 blue Blower motor, air condit. compresor swich-over valve idle stabiliz.
12 8 white Stop-turn signal lamp, instrument cluster, diagnostic warn. monitor term. 8, cruise control, tachometer
13 8 white Diagnostic, hazard warn. system, clock, central locking system, control unit memory of seat adjustment system, (electronic radio)
14 25 blue Heated rear window, horn, safety belt handover arm, cigar. light rear (seat heating rear)
15 8 white Trunk light, roof light front and rear, illumin. vanity mirror, safety belt handover arm, door lights, autom. antenna, warning monitor term. 5
16 16 red (Sliding roof, adjustable seat rear)


Mercedes S Class w126 300SD - fuse box

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

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