Mercedes-Benz · Ignition, Starting & Charging

Alternator

The belt-driven generator that powers the car and charges the battery once the engine is running.

How you know it is this

  • A battery warning light that comes on while driving
  • Lights dimming and brightening with engine speed
  • A flat battery every morning despite a new battery
  • A whine or grinding from the front of the engine
  • A smell of hot electrics

Worth knowing before you buy

  • A battery light that comes on while driving is charging, not the battery. Replacing the battery will not fix it and the new one flattens too.
  • Have the charging voltage measured at the battery with the engine running. That one reading separates alternator from battery definitively.
  • Heat is what kills them here, and an alternator sitting low at the front also gets road water and dust.
  • Reconditioned units are widely available and much cheaper. Worth quoting both.
  • Some later cars have a water-cooled alternator or a belt-driven starter-generator, which is a different and dearer part.

What we need to quote it. The engine code, and the measured charging voltage if it has been taken. 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

Alternator 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)