Wiring Diagram Cluster
2012 BMW 135i Coupe Body Electrical Wiring Diagram
Find body control module wiring, door lock circuits, interior lighting paths, and horn/alarm schematics.
Matched Diagrams
48
Variant Used
135i Coupe (E82) L6-3.0L Turbo (N55)
Total Vehicle Diagrams
2792
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.
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Vehicle Repair Hub
Step out of raw diagrams and into the full 2012 BMW 135i Coupe 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 →Top Body Electrical Diagram Paths
1.Electrical Diagrams > Lighting and Horns > Interior LightsGeneralOpen2.Electrical Diagrams > HornLighting and HornsOpen3.Electrical Diagrams > Interior LightsLighting and HornsOpen4.Locks > Keyless Entry — Diagram Information and Instructions > Component ID (General List) > ABody and FrameOpen5.Locks > Keyless Entry — Diagram Information and Instructions > Component ID (General List) > BBody and FrameOpen6.Locks > Keyless Entry — Diagram Information and Instructions > Component ID (General List) > C-GBody and FrameOpen7.Locks > Keyless Entry — Diagram Information and Instructions > Component ID (General List) > H-MBody and FrameOpen8.Locks > Keyless Entry — Diagram Information and Instructions > Component ID (General List) > N-ZBody and FrameOpen9.Locks > Keyless Entry — Diagram Information and Instructions > Signal Glossary > Signal Name For Positive/Ground ConnectionsBody and FrameOpen10.Locks > Keyless Entry — Diagram Information and Instructions > Signal Glossary > Signal Names For LightsBody and FrameOpen11.Locks > Keyless Entry — Diagram Information and Instructions > Signal Glossary > Signal Names For Positive/Ground ConnectionsBody and FrameOpen12.Locks > Keyless Entry — Diagram Information and Instructions > Signal Glossary > Signal Names With ABody and FrameOpen13.Locks > Keyless Entry — Diagram Information and Instructions > Signal Glossary > Signal Names With BBody and FrameOpen14.Locks > Keyless Entry — Diagram Information and Instructions > Signal Glossary > Signal Names With CBody and FrameOpen15.Locks > Keyless Entry — Diagram Information and Instructions > Signal Glossary > Signal Names With DBody and FrameOpen16.Locks > Keyless Entry — Diagram Information and Instructions > Signal Glossary > Signal Names With EBody and FrameOpen17.Locks > Keyless Entry — Diagram Information and Instructions > Signal Glossary > Signal Names With FBody and FrameOpen18.Locks > Keyless Entry — Diagram Information and Instructions > Signal Glossary > Signal Names With GBody and FrameOpen19.Locks > Keyless Entry — Diagram Information and Instructions > Signal Glossary > Signal Names With HBody and FrameOpen20.Locks > Keyless Entry — Diagram Information and Instructions > Signal Glossary > Signal Names With IBody and FrameOpen21.Locks > Keyless Entry — Diagram Information and Instructions > Signal Glossary > Signal Names With KBody and FrameOpen22.Locks > Keyless Entry — Diagram Information and Instructions > Signal Glossary > Signal Names With LBody and FrameOpen23.Locks > Keyless Entry — Diagram Information and Instructions > Signal Glossary > Signal Names With MBody and FrameOpen24.Locks > Keyless Entry — Diagram Information and Instructions > Signal Glossary > Signal Names With NBody and FrameOpen25.Locks > Keyless Entry — Diagram Information and Instructions > Signal Glossary > Signal Names With OBody and FrameOpen26.Locks > Keyless Entry — Diagram Information and Instructions > Signal Glossary > Signal Names With PBody and FrameOpen27.Locks > Keyless Entry — Diagram Information and Instructions > Signal Glossary > Signal Names With QBody and FrameOpen28.Locks > Keyless Entry — Diagram Information and Instructions > Signal Glossary > Signal Names With RBody and FrameOpen29.Locks > Keyless Entry — Diagram Information and Instructions > Signal Glossary > Signal Names With SBody and FrameOpen30.Locks > Keyless Entry — Diagram Information and Instructions > Signal Glossary > Signal Names With TBody and FrameOpen31.Locks > Keyless Entry — Diagram Information and Instructions > Signal Glossary > Signal Names With UBody and FrameOpen32.Locks > Keyless Entry — Diagram Information and Instructions > Signal Glossary > Signal Names With VBody and FrameOpen33.Locks > Keyless Entry — Diagram Information and Instructions > Signal Glossary > Signal Names With WBody and FrameOpen34.Locks > Keyless Entry — Diagram Information and Instructions > Signal Glossary > Signal Names With ZBody and FrameOpen35.Locks > Keyless Entry — Diagram Information and Instructions > Signal Glossary > Signals Names For LightBody and FrameOpen36.Locks > Keyless Entry — Diagram Information and Instructions > Wire Color Code IdentificationBody and FrameOpen37.Locks > Keyless Entry — Electrical Diagrams > Convenient Access System InputsBody and FrameOpen38.Locks > Keyless Entry — Electrical Diagrams > Power Supply, CA Convenient Access SystemBody and FrameOpen39.Locks > Keyless Entry — Electrical Diagrams > Power Supply, Car Access System CASBody and FrameOpen40.Locks > Keyless Entry — Electrical Diagrams > Remote ControlBody and FrameOpen41.Locks > Power Locks — Electrical Diagrams > Central Locking DrivesBody and FrameOpen42.Locks > Power Locks — Electrical Diagrams > Central Locking InputsBody and FrameOpen43.Antitheft and Alarm Systems > Keyless Entry — Diagram Information and Instructions > Component ID (General List) > AAccessories and Optional EquipmentOpen44.Antitheft and Alarm Systems > Keyless Entry — Diagram Information and Instructions > Component ID (General List) > BAccessories and Optional EquipmentOpen45.Antitheft and Alarm Systems > Keyless Entry — Diagram Information and Instructions > Component ID (General List) > C-GAccessories and Optional EquipmentOpen46.Antitheft and Alarm Systems > Keyless Entry — Diagram Information and Instructions > Component ID (General List) > H-MAccessories and Optional EquipmentOpen47.Antitheft and Alarm Systems > Keyless Entry — Diagram Information and Instructions > Component ID (General List) > N-ZAccessories and Optional EquipmentOpen48.Antitheft and Alarm Systems > Keyless Entry — Diagram Information and Instructions > Signal Glossary > Signal Name For Positive/Ground ConnectionsAccessories and Optional EquipmentOpen
Exact Vehicle Hub
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