BMW GRAN COUPE 4 Series Owner's Manual page 242

Mobility
Checking the coolant level in the filler
neck
There are yellow Min and Max marks in the
coolant reservoir.
1. Let the engine cool.
2. Turn the lid of the coolant reservoir slightly
counterclockwise to allow any excess
pressure to dissipate, then open it.
3. Open the coolant reservoir lid.
4. The coolant level is correct if it lies be‐
tween the minimum and maximum marks
in the filler neck.
242
Coolant
Online Edition for Part no. 01402978272 - II/17
Adding
1. Let the engine cool.
2. Turn the lid of the coolant reservoir slightly
counterclockwise to allow any excess
pressure to dissipate, then open it.
3. If the coolant is low, slowly add coolant up
to the specified level; do not overfill.
4. Turn the lid until there is an audible click.
The arrows on the coolant reservoir and
the lid must point towards one another.
5. Have the cause of the coolant loss elimi‐
nated as soon as possible.
Disposal
Comply with the relevant environmen‐
tal protection regulations when dispos‐
ing of coolant and coolant additives.