Used Mercedes-Benz EQS Starter Motor

No — the EQS is a fully electric vehicle and has no internal combustion engine, so it does not have a starter motor at all. Electric motors do not require a starter; the drive motor is powered directly from the high-voltage battery. If your EQS has a starting or power issue, the components to investigate are the high-voltage battery, the 12V auxiliary battery, the DC-DC converter, or the main inverter/drive unit — a breaker specialising in EV parts can advise on which is relevant to your fault.

Because the EQS is fully electric, 'won't start' faults typically point to the 12V auxiliary battery (which wakes the car's systems up), the high-voltage traction battery, the DC-DC converter that keeps the 12V system charged, or a software/immobiliser issue. There is no starter motor or alternator on this vehicle, so those parts do not apply. Describe your exact symptoms to a breaker who handles EV dismantles — they can help identify whether you need a 12V battery, a DC-DC converter, or another electrical component from a donor EQS.

Mercedes did not offer a plug-in hybrid or mild-hybrid variant of the EQS — the entire EQS range sold in the UK is battery-electric only, so no version of this model was ever built with a combustion engine or a starter motor. If you have a vehicle described as an EQS that appears to have combustion engine components, double-check the VIN and V5 carefully, as it may be a different Mercedes model such as the S-Class (W223), which does use a conventional or mild-hybrid starter system. A breaker or VIN check service can confirm exactly which model and drivetrain you have before you order any parts.

Trim and badge level can reflect genuine drivetrain differences on the EQS — the 450+ is a single rear-motor variant while the 580 4MATIC has dual motors and all-wheel drive, which affects drive unit and inverter components. However, none of these variants has a starter motor, so trim level is irrelevant to that specific part. If you are sourcing any other EV drivetrain component, always confirm the exact motor configuration and software compatibility with the breaker against your registration, as EV parts can be closely paired to the vehicle's ECU.

The EQS (Z297 platform) launched in the UK for the 2022 model year, and a mid-cycle update arrived for the 2024 model year bringing some exterior and interior revisions. Whether a specific electrical or drivetrain component crosses that boundary depends on the exact part and any running changes Mercedes made — confirm compatibility with the breaker against both registration numbers before purchasing. Because no version of the EQS has a starter motor, this interchangeability question is only relevant for other components such as inverters, DC-DC converters, or 12V batteries.