Join Date: Sep 2005
Location: Mississauga-Toronto, Ontario
so its not working now ?? still needs to get jumped all the time.
I mean logically a battery can be good as in able to hold a full charge but if there is any issue with the charging loop in the alternator you will still have issues and the battery wont fully charge. So there has to be a problem somewhere with a shop that is not giving you the correct answer.
Not sure why the track off light would come on, thats an odd one.
Try measuring the voltage at the battery with the engine on/off.
The voltage should be higher with the engine on, around 13.5-14v and lower with the engine off.
PS batteries charge relatively quickly to a level where they can restart the car again. My friends 540i always dies cuz it has like 200k km and with a bad battery on top of it he needs to carry a booster all the time. But if he leaves the car running for about 10 minutes in the driveway it will be enough to get it going again.
I would get this issue fixed before the timing belt because ure dropping a nice sum of money in a car that isnt that reliable just yet. Perhaps try another shop and dont tell them anything from the other places, just tell them your car is acting funny and needs to be boosted, ask them what needs to be replaced.