5 Series Fixing 9D12 Error Code

[KKDriver]

Еrror code 9D12 typically indicates an issue with the internal battery of the siren and tilt sensor module.Mostly the people visit the BMW service center to fix it. I will show you that everyone can do it yourself very easy.

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[Giannis]

Almost similar with the E39, with the only difference being that you have to remove the fender liner and not the rear bumper to get access to it.