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Front fuse and relay box/fuse boxes - ra54001401255x(1255)

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Model 140 - A./B. Remove/install front fuse/relay box up to 08/95, as of 09/95 C. Location of relays, D. Location of fuse boxes 

Operation no. of operation texts and work units or standard texts and flat rates:

  1. Removing and installing front fuse and relay box (up to 08/95) 
    Fig 1: Identifying Front Fuse And Relay Box Components (Up To 08/95)
    G05439034Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
    Ground cable at battery disconnect, connect.
    Fuse box cover (1) remove, install.
    Wiper system relay (K26) remove from mount, install.
    Wiper relay holder (2) remove, install.
    Screws (3) unscrew, screw in.
    Relay box cover (4) remove, install.
    Screws (5) unscrew, screw in.
    Fuse holders (6) remove from fuse and relay box (F1) and disconnect, install and reconnect (see note).
    Relay carrier (7) remove from fuse and relay box (F1), install.
    All relays and control modules (arrow) remove, install.
    Electrical connections from relay carrier (7) unclip, clip in.
    Fastening nuts for fuse and relay box unscrew, screw in.
    Fuse and relay box take out, insert.
    After connecting the battery perform the following work Set clock in instrument cluster.
    Code radio (82-7502).
      If applicable code auto pilot system (APS) and load language (82-7502) Synchronize power windows (FUNCTION OF CONVENIENCE CONTROL (POWER WINDOWS AND TILTING/SLIDING ROOF) ) If applicable set timer for stationary heater. On vehicles with ADS reactivate steering angle sensor (32-0600) .
  2. Removing and installing front fuse and relay box (as of 09/95) 
    Fig 2: Identifying Front Fuse And Relay Box Components (As Of 09/95)
    G05439035Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
    Ground cable on battery disconnect, connect.
    Fuse box cover (1) remove, install.
    Connector remove from mount, install.
    Screws (3) unscrew, screw in.
    Relay box cover (4) remove, install.
    Screws (5) unscrew, screw in.
    Fuse holders (6) remove from fuse and relay box (F1) and disconnect, install and reconnect (see note).
    All relays and control modules (arrow) remove, reinstall.
    Electrical connections from relay carrier (7) unclip, clip in.
    Fastening nuts for fuse and relay box unscrew, screw in.
    Fuse and relay box remove, reinstall.
    After connecting the battery perform the following work Set clock in instrument cluster.
    Code radio (82-7502).
      If applicable code auto pilot system (APS) and load language (82-7502) Synchronize power windows (FUNCTION OF CONVENIENCE CONTROL (POWER WINDOWS AND TILTING/SLIDING ROOF) ) If applicable set timer for stationary heater. On vehicles with ADS reactivate steering angle sensor (32-0600) .
  3. Location of relays 

    Location of relays in fuse and relay box F1

    Fig 3: Identifying Fuse And Relay Box
    G05439036Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
    LOCATION OF RELAYS IN FUSE AND RELAY BOX F1 (UP TO 08/95)

    Code letter Relay or control module designation
    A N10, N10/2 Combination relay (turn signals with trailer coupling, heated rear window, wiper motor, anti-theft alarm system (ATA)
    B N7 Lamp failure monitoring unit
    C K24 Convenience feature relay
    D K30 Pump after-running control relay
    E K9/1 Relay, auxiliary fan first stage
    F, G K9 Relay, auxiliary fan second stage
    H K19/1 Separation relay, terminal 56/56b (daytime driving light)
    K K2 Headlamp wash/wipe system (SRA) relay
    L K17 Air injection relay
    K17/3 Key-operated stop relay (model 140.1)
    M K29 Transmission upshift delay relay
    LOCATION OF RELAYS IN FUSE AND RELAY BOX F1 (AS OF 09/95)

    Code letter Relay or control module designation
    A N10/2 Combination relay (turn signals with trailer coupling, heated rear window, wiper motor, ATA)
    N10 USA ONLY Combination relay (turn/hazard signal, heated rear window, wiper motor)
    B N7 Exterior lamp failure monitoring unit
    C K24 Convenience feature relay
    D K20/1 High pressure/return pump relay
    E K39 Fanfare horn relay
    F K38/3 Starter lockout relay
    G - -
    H K19/1 Separation relay, terminal 56/56b (daytime driving light) NORWAY ONLYSWEDEN ONLY
    K35 Oxygen sensor relay downstream of TWC
    K K2 Headlamp washer relay (HCS)
    L K17 Air injection relay
    K17/3 Air injection relay/transmission, upshift delay
    M K29 Transmission upshift delay relay
    NOTE: To disconnect the connectors press the locking slide on the fuse carrier in the direction indicated by the arrow.

    Locking elements have been attached to the wiring harness connectors and fuse holders to prevent the connectors on the fuse outputs from being mixed up.

    Fig 4: Locating Locking Slide And Fuse Carrier
    G05439037Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
  4. Location of fuse boxes 
Fig 5: Identifying Fuse And Relay Box
G05439038Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
NOTE: The fuse box (F3, 35 fuses) is a two-piece design.

It consists of a fuse carrier with 20 fuses and a fuse carrier with 15 fuses.

Fig 6: Identifying Maxi Fuse Box And Fuse Box, 35 Fuses And Cockpit/Taillamp Harness
G05439039Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Fig 7: Identifying Fuse Box, 17 Fuses And Trunk
G05439040Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
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