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. BMW 3-Series and 4-Series Forum (F30 / F32) F30POST > Technical Forums > N20, N26, B46, B48 Turbo Engine / Drivetrain / Exhaust Modifications > What is the process to bleed B48 coolant system Post Reply Thread Tools 11-22-2018, 10:29 AM # 1 buster-riley Enlisted Member 31 Rep 45 Posts Drives: 2016 m235i 6MT no sunroof Join Date: Feb 2015.
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. B46/B48 Coolant Change Procedure All times are GMT -5.
The time now is 01:36 PM. The electric pump also introduced a self bleeding procedure to the vehicle, turning the tedious task of bleeding the system into one you won't ever have to think about. Bleeding the cooling system on previous generations of BMW proved to be tricky at best.
It was common to get air pockets stuck inside the engines, leading to cooling issues. 17 00 039 Bleeding the cooling system (B32, B38, B42, B48, B46) Warning! Risk of scalding! Only perform this repair work after engine has cooled down. Caution! You must protect the alternator against dirt contamination before carrying out any repair work on the cooling circuit.
Cover alternator with suitable materials. Failure to comply with this procedure may result in an alternator. The cooling system bleeding routine is terminated automatically after 11 minutes.
Adjust the filling level in the coolant expansion tank for low temperature to the maximum level. Use this procedure to bleed your cooling system on any 6 cyl or 4 cyl engines with electric water pumps up to 2017 (before the b48 and b58 engines).