i have a 2005 bmw x5 3.0, in the morning i drove about 2 miles. after a little while I started the car but wasnt even a cranking sound, then i jump start it and drove about a mile to get home. i stop the car, in morning i try to start again, in the first turn nothing happened, tryed again and it started, but i drove like about 8 mils and it was dead. while i was driving the battery sign was blinking. Then i jump start again and drove for another 4 mils to a parts store. They checked the battery and said it is fine, but the machine says 9.8 - 10 low but good, then we try to start it but it was in starting, so he jump start it agin and i drove about 15 miles, then i shut off, and restart few time, without any problem, but after a little while the alarm go of by itself. According to the Mechanic, it's the alternator or the starter. Can you please help me with it, which one you think it is alternator, starter or battery??

Asked by Oct 12, 2014 at 12:26 AM about the 2005 BMW X5 3.0i AWD

Question type: Maintenance & Repair

i have a 2005 bmw x5 3.0, in the morning i drove about 2 miles. after a little while I
started the car but wasnt even a cranking sound, then i jump start it and drove about a
mile to get home. i stop the car, in morning i try to start again, in the first turn nothing
happened, tryed again and it started, but i drove like about 8 mils and it was dead.
while i was driving the battery sign was blinking. Then i jump start again and drove for
another 4 mils to a parts store. They checked the battery and said it is fine, but the
machine says 9.8 - 10 low but good, then we try to start it but it was in starting, so he
jump start it agin and i drove about 15 miles, then i shut off, and restart few time,
without any problem, but after a little while the alarm go of by itself. According to the
Mechanic, it's the alternator or the starter. Can you please help me with it, which one
you think it is alternator, starter or battery??

2 Answers

36,785

You have all the classic signs of a weak alternator.

36,785

The alternator power's up the battery. The battery power's up the starter. Bad alternator no start.

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