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Lion Yard Trading
Mercedes-Benz · Electrical, Sensors & Modules

Body control module

The module running the body electrics — lighting logic, locking, alarm, and the communication between the other modules.

Also called BCM.

How you know it is this

  • Locking, lights or alarm behaving unpredictably
  • Modules dropping off the diagnostic bus
  • A parasitic battery drain

Worth knowing before you buy

  • Coded to the car, always.
  • Confirm the battery and the earths first. Low voltage makes a healthy module behave exactly like a failing one, and that is free to check.
  • Overlaps with the SAM units on many Mercedes — which module does what varies by model and year, so the chassis number matters.

What we need to quote it. The chassis number and the fault codes. The chassis number settles the generation, the body and usually the engine in seventeen characters — it is on your mulkiya. A photograph of the old part helps where there is more than one version.

Engine control unitTransmission moduleSAM unitsBody and comfort modulesAirbag moduleImmobiliser and keylessInstrument cluster
Control modules — schematic, to show where the part sits. Arrangement is right; it is a diagram and not a fitment reference.

Rest of the control modules

All electrical, sensors & modules parts
Get in touch

Body control module for your Mercedes-Benz?

Send the chassis number and a photograph of the old part. We come back with genuine, OEM and aftermarket options priced side by side, with lead times.

Mon–Sat, 8:00 AM – 6:00 PM · +971 54 303 3119 (Operations Director) · +971 54 241 0599 (Managing Director)