What preventive maintenance can you carry out on the battery?

The selected combination of checking cable connections and cleaning the poles is correct for preventive battery maintenance. According to German traffic regulations, maintaining your vehicle's battery is crucial for safety and vehicle reliability. Ensuring that cable connections and battery support are secure prevents electrical failures. Likewise, cleaning and greasing the poles helps prevent corrosion, which can affect battery performance.

However, it is also important to be aware that exchanging battery acid is not typically necessary as a preventive measure and is generally not advised without specific circumstances or professional guidance. Regular checks of the battery's fluid levels might be more relevant, but this is often done in professional settings rather than by the vehicle owner.

Understanding these maintenance tasks contributes to not only vehicle safety but also compliance with legal requirements regarding vehicle upkeep, as outlined in German road traffic regulations.