Bmw B48 Coolant Bleeding Procedure

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.. There are two separate cooling systems in the B46/B48 engine that have to be drained. B46/B48 Coolant Change Procedure All times are GMT -5.

The time now is 01:02 PM. Bleeding Coolant or Checking Water Pump Operation:Here's the instructions 1. Turn ignition On2.

Do not start vehicle 3. Turn heat to max 4. Put fan speed on.

This tutorial covers the full BMW coolant bleed procedure, ensuring you remove air pockets, prevent overheating, and keep your engine running smoothly. Whether you're doing a coolant flush or replacing the water pump, this guide is perfect for BMW owners looking to avoid common cooling system issues. The official BMW manual states that bleeding of the coolant is carried out using a single procedure which bleeds both the high temperature and low temperature circuits simultaneously and there is no mention of a procedure that will deal with either circuit independently.

It's a B46/48 engine with the dual expansion tank coolant system. I don't have access to TIS or ISTA and Im not familiar with BMWs. Planning on draining, filling with distilled water, and bleed.

Repeat a few times and then fill with BMW coolant. Or is there a special procedure I need to follow? Thanks! Bleeding your BMW's coolant system is a crucial maintenance task that ensures the longevity and performance of your vehicle's engine.

With the rising temperatures and humidity levels, it's essential to check and maintain your coolant levels regularly to prevent overheating and damage to your engine. Coolant bleeding procedure not working All times are GMT -5. The time now is 05:28 AM.

The self bleeding procedure will begin (via the electric water pump) and will run for about 12 minutes. During this time the water pump will alternately turn on and off. Do not remove cap while bleeding procedure is running.

When bleeding is complete, double check coolant level and adjust as required. Replace coolant cap. What I did on my car, and I suspect its the same on yours, is drained the coolant, filled with distilled water, ran the bleed cycle, drained again, bled again, repeated another two times or until it comes out clear, then filled with new coolant.

My car is an E70, you bleed by turning the car on (engine not running), heat at max, blower at minimum, and press the gas pedal all the way down for.