Wiring Diagram Cluster

2003 Mercedes Benz SL 500 Body Electrical Wiring Diagram

Find body control module wiring, door lock circuits, interior lighting paths, and horn/alarm schematics.

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Matched Diagrams

48

Variant Used

SL 500 (230.475) V8-5.0L (113.963)

Total Vehicle Diagrams

1372

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Diagnostic signal

Codes Often Seen With This System

Use the code cluster when wiring faults overlap with check-engine or module-level diagnostics.

B1318: Battery Voltage Low →
U0140: Lost Communication with Body Control Module

Top Body Electrical Diagram Paths

1.Components > In - Lu > Keyless Go Trunk Lid PushbuttonGeneralOpen2.Components > Tr - Va > Trunk Keyless-Go Antenna Connector, LeftGeneralOpen3.Components > Tr - Va > Trunk Keyless-Go Antenna, LeftGeneralOpen4.Components > Tr - Va > Trunk Keyless-Go Antenna, RightGeneralOpen5.Electrical Diagrams > Lighting and Horns > System Diagram > Electrical Diagrams > PE82.20-U-2000KA Interior Lights (Part 1)GeneralOpen6.Electrical Diagrams > Lighting and Horns > System Diagram > Electrical Diagrams > PE82.20-U-2000KB Interior Lights (Part 2)GeneralOpen7.Electrical Diagrams > Lighting and Horns > System Diagram > Function Diagrams > PE82.20-U-2050KA Electrical System Function Diagram For Interior LightsGeneralOpen8.Body Control Systems — PE54.21-U-2103KA Rear Signal Acquisition and Actuation Module (SAM) Control ModuleBody and FrameOpen9.Body Control Systems — PE54.21-U-2107KA Overhead Control Panel (OCP) Control ModuleBody and FrameOpen10.Body Control Systems — PE54.21-U-2120KA Lower Control Panel Control Module (N72)Body and FrameOpen11.Body Control Systems — PE54.21-U-2121KA Driver-Side Signal Acquisition and Actuation Module (SAM) Control ModuleBody and FrameOpen12.Body Control Systems — PE54.21-U-2122KA Passenger-Side Signal Acquisition and Actuation Module (SAM) Control ModuleBody and FrameOpen13.Electrical Diagrams > PE82.20-U-2000KA Interior Lights (Part 1)Lighting and HornsOpen14.Electrical Diagrams > PE82.20-U-2000KB Interior Lights (Part 2)Lighting and HornsOpen15.Function Diagrams > PE54.35-U-2050KA Function Diagram of Fanfare Horn System (FAN) Electrical SystemLighting and HornsOpen16.Function Diagrams > PE82.20-U-2050KA Electrical System Function Diagram For Interior LightsLighting and HornsOpen17.Horn — DiagramLighting and HornsOpen18.Locks — Electrical Diagrams > PE80.45-U-2000KA Central Lock (CL) System (Part 1)Body and FrameOpen19.Locks — Electrical Diagrams > PE80.45-U-2000KB Central Lock (CL) System (Part 2)Body and FrameOpen20.Locks — Electrical Diagrams > PE88.50-U-2000KA Remote Trunk Lid Release (RTR), Sheet 1Body and FrameOpen21.Locks — Electrical Diagrams > PE88.50-U-2000KB Remote Trunk Lid Release (RTR), Sheet 2Body and FrameOpen22.Locks — Function Diagrams > PE80.20-U-2050KA Function Schematic For Central Locking (CL) Electrical SystemBody and FrameOpen23.Locks — Function Diagrams > PE88.50-U-2050KA Function Diagram of Remote Trunk Opening (RTO)Body and FrameOpen24.Locks > Keyless Entry — Electrical DiagramsBody and FrameOpen25.Locks > Keyless Entry — Function DiagramsBody and FrameOpen26.Antitheft and Alarm Systems > Keyless Entry — Electrical DiagramsAccessories and Optional EquipmentOpen27.Antitheft and Alarm Systems > Keyless Entry — Function DiagramsAccessories and Optional EquipmentOpen28.Components > AIR - Ba > Alarm Signal HornGeneralOpen29.Components > Ba - Ce > Body Lateral Acceleration Sensor, Front, LeftGeneralOpen30.Components > Ba - Ce > Body Lateral Acceleration Sensor, Front, RightGeneralOpen31.Components > Ba - Ce > Body Lateral Acceleration Sensor, Rear, LeftGeneralOpen32.Components > Ba - Ce > Body Lateral Acceleration Sensor, Rear, RightGeneralOpen33.Components > Ba - Ce > Center Console Keyless Go AntennaGeneralOpen34.Components > Ce - Co > Center Console Keyless Go Antenna ConnectorGeneralOpen35.Components > Ce - Co > CL [ZV] Remote Trunk Lid Opening SolenoidGeneralOpen36.Components > Co - Do > Door Handle Voltage Supply Connector Sleeve (Keyless Go)GeneralOpen37.Components > Do - En > Door Keyless Go Lift Solenoid Connector, LeftGeneralOpen38.Components > Do - En > Door Keyless Go Lift Solenoid Connector, RightGeneralOpen39.Components > En - Fu > Fanfare Horn, LeftGeneralOpen40.Components > En - Fu > Fanfare Horn, RightGeneralOpen41.Components > En - Fu > Fanfare Horns and Airbag Clock Spring ContactGeneralOpen42.Components > En - Fu > Fanfare Horns PushbuttonGeneralOpen43.Components > Ga - He > Ground (Left Taillamp In Trunk)GeneralOpen44.Components > Ga - He > Ground (Left Wheelhousing In Trunk)GeneralOpen45.Components > Ga - He > Ground (Right Wheelhousing In Trunk)GeneralOpen46.Components > In - Lu > Keyless Go 24 V Supply Connector SleeveGeneralOpen47.Components > In - Lu > Keyless Go Antenna, RearGeneralOpen48.Components > In - Lu > Keyless Go Control ModuleGeneralOpen

Parts & Tools for This Job

Common parts shoppers buy for 2003 Mercedes Benz SL 500 Body Electrical.

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Assorted Fuses

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Relays

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Digital Multimeter

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Wire Repair Kit

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2003 Mercedes-Benz Sl 500 Repair HubExact Vehicle · Backbone

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Likely Trouble Codes for This System

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B1318: Battery Voltage LowCode

Body/Electrical code commonly seen during body electrical diagnosis.

U0140: Lost Communication with Body Control ModuleCode

Network/Communication code commonly seen during body electrical diagnosis.

More SL 500 Wiring Pages

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Same System, Other Vehicles

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