BMW X3 Heat Management Module Replacement DIY (2018-2024 BMW G01 X3, G02 X4, M40i, B58 Engine)

BMW X3 Heat Management Module Replacement DIY (2018-2024 BMW G01 X3, G02 X4, M40i, B58 Engine)

►BMW’s push for efficiency has seen it turn the simple engine coolant thermostat into an active valve. It’s electronically controlled and can send coolant to specific passages while blocking it from others for optimal warm-up or cooling procedures. However, its complexity makes it a little more prone to failure than its predecessor. As such, if you have your B46/48 or B58 engine long-term, you’ll eventually need a heat management module replacement.

Now that it functions as more than a simple mechanical valve, BMW calls its engine coolant thermostat the “heat management module.” Regardless of the name change, it functions and fails like the old valve. It’s meant to let coolant past, but when they stop functioning, they’ll often fail closed, preventing any coolant from entering the engine. That makes for a situation where the engine will overheat after very short usage. Ignoring the overheating can cause catastrophic internal damage, so if your heat management module fails, replace it immediately.

In this video, Rusty Herten, FCP Euro’s In-House DIYer, replaces the heat management module engine coolant thermostat on a B58 engine in a BMW G01 X3 M40i.

00:00 – Intro
01:07 – Tools Needed
02:40 – Job Start/Battery Disconnect
03:20 – Oil Drain
04:39 – Coolant Drain
08:45 – Intake Manifold Removal
23:22 – Heat Management Module Replacement
35:45 – Intake Manifold Installation
38:11 – Reassembly
57:41 – Coolant Refill
01:00:33 – Bleed Procedure
01:01:32 – Wrap-Up

Buy This Kit HERE:
https://www.fcpeuro.com/products/bmw-engine-coolant-thermostat-assembly-heat-management-module-oe-supplier-11538642559?utm_source=youtube&utm_medium=description&utm_campaign=mps%20bmw%20g01&utm_content=heat%20module

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Comments

@Mondoman-wy9eo says:

Have heard that HMM may be considered emissions related so covered by the longer emissions warranty especially in CARB states.

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