BMW M4 COUPE Owner's Manual page 200

Mobility
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. Close the cap.
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.
200
Coolant
Online Edition for Part no. 01 40 2 974 597 - VI/16