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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Mechanical Maintenance: Break-in / Oil & Fluids / Servicing / Warranty > Battery Connection Help



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      04-14-2026, 10:01 PM   #1
prelude_dash
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Battery Connection Help

Hey everyone, this is my first post on the forum, so I apologize if this is under the wrong category.

I recently purchased a 2006 BMW 325i that has been sitting for roughly 2 years. When I picked up the car it was fully dead and wouldn't jump, but I bought a new battery and it started right up.

The issue I am having right now is that the car is running in limp mode. After some diagnoses, I have narrowed it down to the rear power distribution box (part on top of the battery). I have been getting some VVT codes, so I went to check the voltage of fuses (particularly the red VVT connector), and everything was reading zero volts. Before I check if the fuses are blown, I want to confirm if everything is hooked up correctly.

The picture I have attached is a reference picture I used when putting in the new battery. This is how the old battery was hooked up. When I was trying to look at YouTube tutorial, I saw that everyone had a slightly different red box, and those connectors attached differently, primarily the visible red terminal (not the main positive) attaches to the bottom right terminal (covered by brace).

I just want to confirm if there isn't an obvious wiring issue before I dig deeper.

PS. I'm not sure why the attachment manager won't let me upload an image, here is a google drive link to it: https://drive.google.com/file/d/1VyQ...ew?usp=sharing
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      04-15-2026, 07:35 PM   #2
prelude_dash
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Solution: Just swapped the connection. Box has power now and VVT issue is gone.
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