Wiring Diagram Cluster

2003 Mercedes Benz SLK 320 Body Electrical Wiring Diagram

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

Open Exact Vehicle Repair HubOpen Interactive Diagram BrowserBrowse All Wiring Diagrams

Matched Diagrams

48

Variant Used

SLK 320 (170.465) V6-3.2L (112.947)

Total Vehicle Diagrams

310

🤖 Stuck on this electrical issue?

Wiring diagrams can be a maze. Ask Manuel, our factory-trained AI mechanic, to analyze this circuit or troubleshoot your specific symptom.

Ask AI Mechanic ➔

From Diagram To Fix

Use this wiring page as the jump point, not the dead end

Open the exact diagram, then move directly into the vehicle hub, the repair most likely tied to this system, or the code cluster that usually shows up with it.

Keep context

Vehicle Repair Hub

Step out of raw diagrams and into the full 2003 Mercedes Benz SLK 320 hub with repairs, specs, codes, and other systems already tied to this car.

View vehicle repair hub →

OEM source

Factory Manual Evidence

When there is no clean repair shortcut for this system, drop into the OEM manual sections that usually carry the authoritative test path.

Open interactive browser →

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.Electrical Diagrams > Lighting and Horns > System Diagram > Interior Lights PE82.20-U-2000BGeneralOpen2.Electrical Diagrams > Interior Lights PE82.20-U-2000BLighting and HornsOpen3.Electrical Diagrams > Lighting and Horns > Backup LampGeneralOpen4.Electrical Diagrams > Lighting and Horns > Brake LampGeneralOpen5.Electrical Diagrams > Lighting and Horns > Center Mounted Brake LampGeneralOpen6.Electrical Diagrams > Lighting and Horns > Courtesy LampGeneralOpen7.Electrical Diagrams > Lighting and Horns > Daytime Running LampGeneralOpen8.Electrical Diagrams > Lighting and Horns > Dome LampGeneralOpen9.Electrical Diagrams > Lighting and Horns > Fog/Driving LampGeneralOpen10.Electrical Diagrams > Lighting and Horns > Hazard Warning LampsGeneralOpen11.Electrical Diagrams > Lighting and Horns > Headlamp > Headlamp Control ModuleGeneralOpen12.Electrical Diagrams > Lighting and Horns > Headlamp > System DiagramGeneralOpen13.Electrical Diagrams > Lighting and Horns > HornGeneralOpen14.Electrical Diagrams > Lighting and Horns > License Plate LampGeneralOpen15.Electrical Diagrams > Lighting and Horns > Marker LampGeneralOpen16.Electrical Diagrams > Lighting and Horns > Parking LampGeneralOpen17.Electrical Diagrams > Lighting and Horns > System Diagram > Exterior Lights W/O Xenon PE82.10-U-2000RCGeneralOpen18.Electrical Diagrams > Lighting and Horns > System Diagram > Exterior Lights With Xenon PE82.10-U-2000RAGeneralOpen19.Electrical Diagrams > Lighting and Horns > System Diagram > Fanfare Signal System (FAN) PE54.35-U-2000BGeneralOpen20.Electrical Diagrams > Lighting and Horns > Tail LampGeneralOpen21.Electrical Diagrams > Lighting and Horns > Turn SignalsGeneralOpen22.Electrical Diagrams > Lighting and Horns > Vanity LampGeneralOpen23.Backup Lamp — Diagram Information and Instructions > Acronyms UsedLighting and HornsOpen24.Backup Lamp — Diagram Information and Instructions > Application NoteLighting and HornsOpen25.Backup Lamp — Diagram Information and Instructions > Color CodesLighting and HornsOpen26.Backup Lamp — Diagram Information and Instructions > ExplanationsLighting and HornsOpen27.Backup Lamp — Electrical DiagramsLighting and HornsOpen28.Diagram Information and Instructions > Acronyms UsedLighting and HornsOpen29.Diagram Information and Instructions > Application NoteLighting and HornsOpen30.Diagram Information and Instructions > Color CodesLighting and HornsOpen31.Diagram Information and Instructions > ExplanationsLighting and HornsOpen32.Electrical Diagrams > Exterior Lights W/O Xenon PE82.10-U-2000RCLighting and HornsOpen33.Electrical Diagrams > Exterior Lights With Xenon PE82.10-U-2000RALighting and HornsOpen34.Electrical Diagrams > Fanfare Signal System (FAN) PE54.35-U-2000BLighting and HornsOpen35.Fog/Driving Lamp — Diagram Information and Instructions > Acronyms UsedLighting and HornsOpen36.Fog/Driving Lamp — Diagram Information and Instructions > Application NoteLighting and HornsOpen37.Fog/Driving Lamp — Diagram Information and Instructions > Color CodesLighting and HornsOpen38.Fog/Driving Lamp — Diagram Information and Instructions > ExplanationsLighting and HornsOpen39.Fog/Driving Lamp — Electrical DiagramsLighting and HornsOpen40.Headlamp — Diagram Information and Instructions > Acronyms UsedLighting and HornsOpen41.Headlamp — Diagram Information and Instructions > Application NoteLighting and HornsOpen42.Headlamp — Diagram Information and Instructions > Color CodesLighting and HornsOpen43.Headlamp — Diagram Information and Instructions > ExplanationsLighting and HornsOpen44.Headlamp — Electrical DiagramsLighting and HornsOpen45.Locks — Diagram Information and Instructions > Acronyms UsedBody and FrameOpen46.Locks — Diagram Information and Instructions > Application NoteBody and FrameOpen47.Locks — Diagram Information and Instructions > Color CodesBody and FrameOpen48.Locks — Diagram Information and Instructions > ExplanationsBody and FrameOpen

Parts & Tools for This Job

Common parts shoppers buy for 2003 Mercedes Benz SLK 320 Body Electrical.

part

Assorted Fuses

Shop Amazon→

part

Relays

Shop Amazon→

tool

Digital Multimeter

Shop Amazon→

tool

Wire Repair Kit

Shop Amazon→

As an Amazon Associate, AllOEMManuals earns from qualifying purchases. Prices and availability may vary.

Exact Vehicle Hub

Browse →
2003 Mercedes-Benz Slk 320 Repair HubExact Vehicle · Backbone

Open the exact vehicle hub for this wiring page to move into repair, manual, and code clusters without leaving the 2003 Mercedes-Benz Slk 320 context.

Likely Trouble Codes for This System

Browse →
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 SLK 320 Wiring Pages

Starter Wiring DiagramAlternator Wiring DiagramHeadlight Wiring DiagramABS Brake Wiring DiagramA/C & Heater Wiring DiagramPower Window Wiring DiagramInstrument Cluster Wiring DiagramWiper & Washer Wiring DiagramTransmission Wiring DiagramAirbag SRS Wiring DiagramEngine Management Wiring Diagram

Same System, Other Vehicles

2010 Toyota Matrix AWD Body Electrical Wiring Diagram2010 Toyota Matrix FWD Body Electrical Wiring Diagram2010 Toyota Prius Body Electrical Wiring Diagram2010 Toyota Venza AWD Body Electrical Wiring Diagram2010 Toyota Venza FWD Body Electrical Wiring Diagram2012 Toyota Camry Body Electrical Wiring Diagram2012 Toyota Prius PHV Body Electrical Wiring Diagram2012 Toyota Prius V Body Electrical Wiring Diagram
Factory Service Tools

Turn This Into a Confident Next Step

Verify the likely fault first, then compare a quote before you approve expensive work.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Diagnostic ToolsCompare Repair QuoteQuote Shield Pro
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready ToolsCompare Repair QuoteQuote Shield Pro