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Hi, i have bmw 520i and last year i could not start it just had a ticking sound, so checked battery and the eye indicator was black so i bought a new bmw battery and its been fine until the last month, i can not start it every morning so i use a engine starter to get it up and running then its usually fine the rest of the day, I only do very short journeys to work about 10mins, is this the problem as its not putting enough charge in the battery and is their anythink i can do to resolve this fault. Thanks. Dean
 

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Your first port of call should be checking the alternator charge rate with a multimeter, check it while the car is idling for a bit then with the revs held up, after that try it with the lights and other consumables switched on, you should be seeing around 13.8 volts and no more than 14.7
 
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