I do not consider ignition coils as regular maintenance items. I have 3 other vehicles with higher mileage and the coil (packs) have never been replaced except a single pack after a valve cover job where I did not replace a spark plug tube seal and oil leaked into the tube. All other are original with mileage ranging from 160k-210k miles.
Looks like the X5 needs them replaced at around 100k. Now I know.
Quote:
Like lightbulbs, they have a finite and consistent service life unless there is some other outside cause of failure. If one fails from normal use, it is safe to assume the rest are not far behind and should be replaced as well.
That's goes for me too!
I keep a couple as spares.
Standard is that if one goes then change them all.
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https://www.e46fanatics.com/threads/...ailed.1285208/