Mercedes-Benz · Ignition, Starting & Charging

Battery sensor and terminals

The intelligent sensor on the battery's negative post that measures current, voltage and temperature, and the terminal clamps.

Also called IBS, battery management sensor.

How you know it is this

  • A charging fault with a good alternator and a good battery
  • Stop-start disabled with no other explanation
  • Corroded, furry terminal clamps
  • Intermittent no-start with everything testing fine

Worth knowing before you buy

  • The sensor is how the car knows the battery's state. A faulty one makes the charging system behave wrongly with healthy hardware either side of it.
  • Corroded terminals cause every symptom a flat battery causes. Cleaning them is free and should always come first.
  • The sensor is part of the negative lead on many cars, so it is bought as a lead assembly.
  • Usually needs registering or resetting after a battery change.

What we need to quote it. The chassis number. 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.

BatteryBattery sensor and terminalsEarth strapsStarter and solenoidAlternator and pulleyVoltage regulatorIgnition switch
Starting and charging — schematic, to show where the part sits. Arrangement is right; it is a diagram and not a fitment reference.
All ignition, starting & charging parts
Get in touch

Battery sensor and terminals 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)