Your BMW requires stroing grounds in order to power all of the onboard computer and electronic systems. Bad grounds will cause lights to flicker and voltage to drop at the worst times. Makes sure all of your vehicle grounds are intact and in good condition the next time you are under your hood to prevent a roadside failure.
The ground cables on your starter and exhaust can become brittle or corrode over time. If yours are starting to show signs of greenish color or splitting replace them with this kit that contains all three.
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