Mercedes-Benz S Class w140 (1992) – fuse box diagram (140 545 50 00 SB 10.1.96)
Year of production: 1992
Front fuse box
| Fuse | Ampere rating | Colour | Description |
| 1 | Vacant | ||
| 2 | 30 | Light green | Relay, auxiliary fan |
| 3 | Vacant | ||
| 4 | 40 | Amber | Windscreen wiper |
| 5 | 40 | Amber | Power fuse, rear compartment fuse box |
| 6 | 40 | Amber | Heated rear window (not for coupe) |
| 7 | 10 | Red | Headlamp wash/wiper system |
| 8 | 7,5 | Brown | Parking/tail light, left + SML |
| 9 | 7,5 | Brown | Parking/tail light, right, license plate illumin. + SML |
| 10 | 7,5 | Brown | Rear fog lights |
| 11 | 7,5 | Brown | Low beam, left |
| 12 | 7,5 | Brown | Low beam, right |
| 13 | 7,5 | Brown | High beam left, high beam indicator |
| 14 | 7,5 | Brown | High beam right |
| 15 | 15 | Light blue | Combination relay, headl. flasher, wiper/washer system, switch f. heat. rear window, airbag, fault indicat. |
| 16 | 10 | Red | Cigar lighter, glove comp. light |
| 17 | 20 | Yellow | Instrum. cluster, turn signal/hazard warn. flasher, ceiling light, (steering angle sensor) |
| 18 | 15 | Light blue | Automatic climate control, (trip computer) |
| 19 | 7,5 | Brown | Vacant |
| 20 | 7,5 | Brown | Control unit and A/C compressor, automatic climate control |
| 21 | 20 | Yellow | Heating wip/wash system, outside mirror, tr. oil cooler, control unit A/C |
| 22 | 7,5 | Brown | Radio, dual-spring belt control, (front seat heating, trip computer) |
| 23 | 7,5 | Brown | Stop lamp, ASR switch, tempomat-cruise control |
| 24 | 7,5 | Brown | Instrument cluster, bulb control unit, ceiling light magnetic clutch-air pump, anti-dazzle-device |
| 25 | 15 | Light blue | Turn signal control, fanfare horns, backup lamp, automatic transmission |
| 26 | 10 | Red | Fog lamp |
| 27 | Vacant | ||
| 28 | 7,5 | Brown | Autmatic serial |
| 29 | 20 | Yellow | (Load current, front seat heating) |
| 30 | 20 | Yellow | Seat adjustm. memory, steering wheel/mirror adjust. memory, steering wheel adjustment, mirror adjustm. |
| 31 | 30 | Light green | (Rear seat bench, head restraints) not for Coupe |
| (Individual rear seat with head restraint, left) not for Coupe | |||
| 32 | 30 | Light green | (Individual rear seat with head restraint, right) not for Coupe |
| 7,5 | Brown | Rear head restraints left, right (only Coupe) | |
| 33 | Vacant | ||
| 34 | 7,5 | Brown | Saf. belt handover arm. (coupe), (front seat heater) |
| 35 | 15 | Light blue | (Sun blind), relay comfort circuitry |
| 36 | Vacant | ||
| 37 | 30 | Light green | Front left seat adjustment |
| 38 | 30 | Light green | Front left seat adjustment |
| 39 | Vacant | ||
| 40 | 30 | Light green | Front right seat adjusment |
| 41 | 30 | Light green | Front right seat adjustment |
Rear fuse box
| Fuse | Ampere rating | Colour | Description |
| 1 | 15 | Light blue | (Rear air conditioner) |
| 2 | 7,5 | Brown | Anti-theft locking syst., infared remote control, (rear seat heating) |
| 3 | 20 | Yellow | Central lock. syst., closing syst. aid., cig. lighter, rear |
| 4 | Vacant | ||
| 5 | 30 | Light green | Window lift |
| 6 | 30 | Light green | Window lift |
| 7 | 7,5 | Brown | Vanity mirror illumination, rear |
| 10 | Red | Vanity mirror illumination, rear, (refrigerator-box) | |
| 8 | Vacant | ||
| 9 | 30 | Light green | (Closing aid system) |
| 10 | 7,5 | Brown | (Telephone) |
| 11 | 20 | Yellow | Window lift, luggage compartment light, centr. locking syst., (ceiling/reading light, rear) |
| 12 | 20 | Yellow | (Load current, rear seat heating) |
| 13 | 30 | Light green | Fuel pump |
| 14 | 25 | White | (sliding roof) |
| 15 | 25 | White | Anti-thft ocking sy./infrared remote control, rear head restraints |
| 16 | 30 | Light green | Tuner, amplifier, sound system |
| 17 | Vacant |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.