Battery or Starter Motor or Both?

buick
century

#1

On 5/28/08, my mechanic replaced the battery in my 2002 Buick Century. It had 19154 miles on it then. Since I got nothing in writing about the battery, I questioned the mechanic and he said it was an 84 month battery.



On 2/12/10, the same mechanic replaced the battery again, saying it would not take a charge. It had refused to start, but I had jump started it with no problem after allowing it to charge for a few minutes. The car had 29476 miles on it.



The mechanic also replaced the starter motor, telling me that it was bad. Until the morning when I had to jump start the car, it had never hesitated to start at the first try.



So, my question is five-fold: 1) How likely is it that a 22 month old battery was totally bad? 2) Shouldn’t I have gotten some sort of rebate or credit? 3)How likely is it that the starter motor had to be replaced? 4) How can I tell if it was actually replaced? and finally, (5) Has my trust in this guy over the last 16 years been ill-founded?






#2

Depending on the brand of battery installed, many of them come with a 24-36 (but some come with as little as 3 or 12, too) month free replacement warranty. That would imply that you should not have been charged for the battery replacement, but possibly incurred a mechanics’s labor charge. I would identify the battery brand and model/brand line, and go to their website to find out what the real battery warranty is.


#3

It seems that your battery is getting deep-discharged–possibly from a battery drain. You could have some shop find the battery drain; or, put a trickle charger on the battery. It may be several days apart when you drive the car, isn’t it? If the battery is draining ("…when I get a jump start…"), it could be be discharging enough to shorten the battery life.


#4

You need to have your alternator checked. It’s probably not charging the battery enough to keep it alive or to start the engine. It’s the heart of your charging/starting system.