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Lion Yard Trading
Mercedes-Benz · Ignition, Starting & Charging

Voltage regulator

The unit controlling how hard the alternator works, holding charging voltage where the battery needs it. Usually with the brushes.

Also called regulator, brush pack.

How you know it is this

  • Charging voltage too low, so the battery never fills
  • Charging voltage too high, which boils the battery and burns bulbs
  • A battery light that flickers

Worth knowing before you buy

  • Usually one part with the carbon brushes, and brush wear is the common failure rather than the electronics.
  • Replacing it is far cheaper than an alternator and on many units it unbolts from the back without removing the alternator.
  • Overcharging destroys a battery quickly and is worth catching early — it also kills bulbs and can damage modules.

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

Rest of the starting and charging

All ignition, starting & charging parts
Get in touch

Voltage regulator 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)