7 Series - E65 / E66 (2002 - 2008)
I have an engine sign on the dashboard. The system check shows all ok. All consumables, brakes, oil etc checks out ok.
Had a code reader plugged in and it came up with P0128 and P0128 (pd) codes - Coolant temperature and Thermostat problem.
I checked the coolant level and it was...