Step-by-step BMW maintenance and DIY repair guides.
You bought a good battery, fitted it carefully, and tightened everything to spec — and eighteen months later it’s dying. Again. Before you blame the battery brand, consider the step most DIYers miss: BMW battery registration. On virtually every BMW built since 2002, the car adapts charging to the battery’s age and chemistry. Swap in…
Your BMW 3 Series has a dead battery and there’s no battery under the hood — because on every modern 3 Series (E90, F30, G20), the battery lives in the trunk. This confuses almost every owner the first time it happens, and guessing wrong here is expensive: clamping jumper cables directly to the trunk battery…
Put the wrong coolant in your BMW 3 Series and you won’t notice anything — at first. The damage shows up months later as degraded corrosion protection inside the cooling system. BMW changed its factory-fill coolant midway through the 3 Series’ life, so “blue” and “green” are both correct answers — for different cars. Getting…
Reset your BMW service light yourself: exact cluster and iDrive steps for the E90, F30 and G20, a CBS icon decoder, and fixes for “Reset Impossible” errors.
