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      08-31-2019, 02:29 AM   #4
Tambohamilton
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United Kingdom
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Drives: E91 330d
Join Date: Apr 2019
Location: Wiltshire, UK

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Quote:
Originally Posted by 1 AKY View Post
Where is this Auxiliary Water Pump in the engine bay and what's its purpose?
On the left (passenger) side of the engine bay, attached to the wheel arch inside the engine bay. It's easy to spot.

Does what it says on the tin. Major function is after-run circulation, and rest heating. Generally your car will run absolutely fine without it though.