Cooling System - Low Coolant Warning Is Displayed

SI B17 02 12
Cooling Systems

November 2012
Technical Service

SUBJECT
Low Coolant Warning Is Displayed

MODEL
F30 with the N20 or N26 engine

Produced to 4/2012

SITUATION
The low coolant level warning may come on in the information display.

CAUSE
Moisture-induced corrosion at the electrical connector for the coolant level sensor causes an inaccurate reading of the coolant level.

PROCEDURE
Replace the coolant expansion tank, and repair the wiring to the connector for the coolant level sensor.

Note:
This repair procedure involves draining a small quantity of coolant; refill the drained quantity with new BMW Long-term Antifreeze/Coolant (50/50 mixture). Do not reuse the drained coolant.





PARTS INFORMATION








WARRANTY INFORMATION