October 2023 – The Jam Journal

W212 ECO Stop/Start & Additional Battery

James1 year ago1 year ago08 mins

Introduction I’ve heard & read a lot about how people think the ECO Stop / Start & additional battery works and it’s time to set the record straight. I think that the most common misconception around this is, that it is this battery restarts the engine once its stopped. It doesn’t. Glad I’ve cleared that…

W212 OM651 E220 Coolant Leak – Fuel Filter Housing – Common Problem

James1 year ago11 months ago07 mins

Introduction Whilst this problem is not just limited to the E Class, it is certainly a common problem on the OM651 engine. Many a time we come across the customer complaint of coolant light coming on, but no obvious leak. There are a few usual suspects, namely the coolant pump or thermostat housing, but one…