MINI MINI Convertible, R52 (USA)
Power steering fluid capacity & service interval
MINI Convertible, R52 (USA) requires power steering fluid with a capacity range between min and max. The data covers 2 configurations.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
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Additional Notes
- Both the MINI Cooper Convertible (85 kW) and the MINI Cooper S Convertible (125 kW) in the R52 generation use an electro-hydraulic power steering system rather than a purely mechanical or fully electric setup.
- The electro-hydraulic configuration means a hydraulic pump is driven by an electric motor, which still requires hydraulic fluid to function, unlike fully electric systems that eliminate fluid entirely.
- Both configurations are noted as equipped with AFS/ARS, referring to active front steering or active rear steering functionality, which operates within the same electro-hydraulic circuit.
- The fluid specification references a CHF cap, indicating the reservoir is designated for CHF-type fluid, a synthetic hydraulic fluid formulated specifically for power steering and active steering systems.
- The service specification for both the 85 kW and 125 kW variants across 2004-2008 is expressed as "between min and max," meaning the service action is a level check and top-up to within the reservoir's marked range rather than a measured volume fill.
- A "between min and max" specification does not correspond to a fixed fluid capacity figure, which distinguishes a routine level inspection from a full system drain and refill where a precise volume would apply.
- Both variants share the same service condition classification of normal use, and no separate severe-use interval or specification is listed for either configuration.