Wiring Diagram Cluster

2008 Mercedes Benz CLS 550 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

CLS 550 (219.372) V8-5.5L (273.960)

Total Vehicle Diagrams

1292

🤖 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 2008 Mercedes Benz CLS 550 hub with repairs, specs, codes, and other systems already tied to this car.

View vehicle repair hub →
2008 Mercedes Benz CLS 550 External Pages

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.

2008 Mercedes Benz CLS 550 External Pages →
2008 Mercedes Benz CLS 550 External Pages

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 - Mi > Keyless Go Trunk AntennaGeneralOpen2.Components > In - Mi > Keyless Go Trunk Lid PushbuttonGeneralOpen3.Electrical Diagrams > Lighting and Horns > Function Diagrams > PE82.20-U-2050XAA Electrical System Function Diagram For Interior LightsGeneralOpen4.Electrical Diagrams > Lighting and Horns > Function Diagrams > PE82.20-U-2050XAB Electrical System Function Diagram For Interior LightsGeneralOpen5.Electrical Diagrams > Lighting and Horns > Function Diagrams > PE82.20-U-2050XAC Electrical System Function Diagram For Interior LightsGeneralOpen6.Electrical Diagrams > Lighting and Horns > Function Diagrams > PE82.20-U-2050XAD Electrical System Function Diagram For Interior LightsGeneralOpen7.Electrical Diagrams > Lighting and Horns > Function Diagrams > PE82.20-U-2050XAE Electrical System Function Diagram For Interior LightsGeneralOpen8.Body Control Systems — PE54.21-U-2107XAA Overhead Control Panel (OCP) Control ModuleBody and FrameOpen9.Body Control Systems — PE54.21-U-2108XAA SAM Control Module With Rear Fuse and Relay Module (N10/2)Body and FrameOpen10.Body Control Systems — PE54.21-U-2108XAB SAM Control Module With Rear Fuse and Relay Module (N10/2)Body and FrameOpen11.Body Control Systems — PE54.21-U-2108XAC SAM Control Module With Rear Fuse and Relay Module (N10/2)Body and FrameOpen12.Body Control Systems — PE54.21-U-2109XAA Driver-Side SAM Control Module With Fuse and Relay ModuleBody and FrameOpen13.Body Control Systems — PE54.21-U-2109XAB Driver-Side SAM Control Module With Fuse and Relay ModuleBody and FrameOpen14.Body Control Systems — PE54.21-U-2109XAC Driver-Side SAM Control Module With Fuse and Relay ModuleBody and FrameOpen15.Body Control Systems — PE54.21-U-2109XAD Driver-Side SAM Control Module With Fuse and Relay ModuleBody and FrameOpen16.Body Control Systems — PE54.21-U-2119XAA Upper Control Panel (UCP) Control ModuleBody and FrameOpen17.Body Control Systems — PE54.21-U-2120XAA Lower Control Panel Control Module (N72)Body and FrameOpen18.Body Control Systems — PE54.21-U-2122XAA Passenger-Side Signal Acquisition and Actuation Module (SAM) Control ModuleBody and FrameOpen19.Function Diagrams > PE82.20-U-2050XAA Electrical System Function Diagram For Interior LightsLighting and HornsOpen20.Function Diagrams > PE82.20-U-2050XAB Electrical System Function Diagram For Interior LightsLighting and HornsOpen21.Function Diagrams > PE82.20-U-2050XAC Electrical System Function Diagram For Interior LightsLighting and HornsOpen22.Function Diagrams > PE82.20-U-2050XAD Electrical System Function Diagram For Interior LightsLighting and HornsOpen23.Function Diagrams > PE82.20-U-2050XAE Electrical System Function Diagram For Interior LightsLighting and HornsOpen24.Locks — PE80.20-U-2050XAA Function Schematic For Central Locking (CL) Electrical SystemBody and FrameOpen25.Locks — PE80.20-U-2050XAB Function Schematic For Central Locking (CL) Electrical SystemBody and FrameOpen26.Locks — PE80.20-U-2051XAA Electrical Function Diagram For Trunk Lid Remote Closing (HDFS)Body and FrameOpen27.Locks > Keyless Entry — Electrical Diagrams > PE80.61-U-2102XAA Rear Module Keyless Go Control UnitBody and FrameOpen28.Locks > Keyless Entry — Electrical Diagrams > PE80.61-U-2103XAA Left Rear Door Keyless Go Control ModuleBody and FrameOpen29.Locks > Keyless Entry — Electrical Diagrams > PE80.61-U-2104XAA Right Rear Door Keyless Go Control ModuleBody and FrameOpen30.Locks > Keyless Entry — Function Diagrams > PE80.61-U-2050XAA Electrical Function Diagram For Keyless GoBody and FrameOpen31.Locks > Keyless Entry — Function Diagrams > PE80.61-U-2050XAB Electrical Function Diagram For Keyless GoBody and FrameOpen32.Antitheft and Alarm Systems > Keyless Entry — Electrical Diagrams > PE80.61-U-2102XAA Rear Module Keyless Go Control UnitAccessories and Optional EquipmentOpen33.Antitheft and Alarm Systems > Keyless Entry — Electrical Diagrams > PE80.61-U-2103XAA Left Rear Door Keyless Go Control ModuleAccessories and Optional EquipmentOpen34.Antitheft and Alarm Systems > Keyless Entry — Electrical Diagrams > PE80.61-U-2104XAA Right Rear Door Keyless Go Control ModuleAccessories and Optional EquipmentOpen35.Antitheft and Alarm Systems > Keyless Entry — Function Diagrams > PE80.61-U-2050XAA Electrical Function Diagram For Keyless GoAccessories and Optional EquipmentOpen36.Antitheft and Alarm Systems > Keyless Entry — Function Diagrams > PE80.61-U-2050XAB Electrical Function Diagram For Keyless GoAccessories and Optional EquipmentOpen37.Components > AB - Au > Alarm Signal Horn With Additional BatteryGeneralOpen38.Components > Au - Br > Body Lateral Acceleration Sensor, Front, LeftGeneralOpen39.Components > Au - Br > Body Lateral Acceleration Sensor, Front, RightGeneralOpen40.Components > Au - Br > Body Lateral Acceleration Sensor, Rear, RightGeneralOpen41.Components > Br - Ci > Circuit 30 Connector Sleeve, Keyless GoGeneralOpen42.Components > Do - DT > Door Keyless Go Control Module, Rear, LeftGeneralOpen43.Components > Do - DT > Door Keyless Go Control Module, Rear, RightGeneralOpen44.Components > DT - Fo > Fanfare Horn, LeftGeneralOpen45.Components > DT - Fo > Fanfare Horn, RightGeneralOpen46.Components > DT - Fo > Fanfare Horns and Airbag Clock Spring ContactGeneralOpen47.Components > DT - Fo > Fanfare Horns PushbuttonGeneralOpen48.Components > Fo - Fu > Fuse and Relay Module and Fanfare Horns Intermediate ConnectorGeneralOpen

Parts & Tools for This Job

Common parts shoppers buy for 2008 Mercedes Benz CLS 550 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 →
2008 Mercedes-Benz Cls 550 Repair HubExact Vehicle · Backbone

Open the exact vehicle hub for this wiring page to move into repair, manual, and code clusters without leaving the 2008 Mercedes-Benz Cls 550 context.

OEM Manual Evidence

Browse →
2008 Mercedes Benz CLS 550 External PagesOEM Manual

External Pages — 2008 Mercedes Benz CLS63 Service Manual ~ LEMON Manuals LEMON Manuals: Repair Knowledge Reimagined Home >> Mercedes Benz >...

2008 Mercedes Benz CLS 550 External PagesOEM Manual

External Pages — 2008 Mercedes Benz CLS550 Service Manual ~ LEMON Manuals LEMON Manuals: Repair Knowledge Reimagined Home >> Mercedes Benz...

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 CLS 550 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 DiagramCruise Control 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