AFAIK, none had the pump and shutoff valve or MMI options as standard.
They just had the webasto as a supplementary heater than runs when needed.
An option was available to upgrade it to a parking heater with the above added, but it was dropped in the UK on later models ~2008 but as the PDF above speaks about the changes up to 2010, I think they were available in other countries.
It is easy to add the MMI options to fire it up manually or set a timer but as the coolant is not flowing it just heats itself up and then shuts down. After it has done this three times it may block out and need an adaptation to reset the safety lockout. the pump is just a standard webasto part and plugs into the heater itself.
Last edited by snapdragon; 23rd April 2020 at 08:19 AM.
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