Engine Warmhold Function

A SMART APPROACH TO ENGINE IDLING.

Volvo believes in shutting off the engine whenever possible to save fuel and reduce noise. But there are some times when extended idling is a necessity. During those times, Volvo engines utilize the variable geometry turbocharger to thermostatically engage and provide Volvo's 'Warmhold Function', which allows the engine to warm up quickly and maintain engine temperature at very low idle speeds, saving fuel and reducing emissions.