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Coolant Flush and Replacement – BMW B46/B48 Turbo 4 Cylinder Engine
This article gives step-by-step instructions on draining and refilling the coolant system in the BMW B46/B48 4-cylinder engine
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Possible Symptoms: Not applicable for this repair.
This repair can be used on the following BMW models:
Intermediate level repair.
Step 1 - Purchase Parts
You will need the following parts and supplies to perform this repair.
Step 2 - Repair Procedure
Unless otherwise noted, all vehicle repair step images in this article are copyrighted, and used courtesy of BMW of North America, Inc. .
1. Drain the high temperature engine coolant
1. Drain the low temperature engine coolant
2. Refilling the high and low temperature cooling systems
3. Bleeding the low and high temperature coolant systemss-17-00Copyright BMW Repair Guide 2023 - All Rights Reserved