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ard 06-18-2012 11:09 AM
Quote:
Originally Posted by basora (Post 882109)
It's current (amps) not voltage that causes damage. Much of the cars sensitive electronics draws micro-amps ... it doesn't take much.

I learned this in high school ... and from a close friend of mine who is a BMW master mechanic who has seen his share of BMW's get towed in because of fried electronics due to a lack of reprogramming the cars computer after replacing the battery ...
In high school?????????

Keep studying... This post is nonsense.

ard 06-18-2012 11:16 AM
Quote:
Originally Posted by snowsurfer (Post 882107)
Car has been fine since they replaced the battery, guess we can just chalk it up to bad luck
Not to unsettle you, but if there is an underlying issue with the charging system (or a parasitic discharge) a new battery just masks it for a while.... If you get issues back, and this was a bmwdealer, make sure you press the case that THIS battery was killed by their failur to disgnose

PAX5 06-19-2012 08:55 AM
Quote:
Originally Posted by ard (Post 882300)
In high school?????????
Keep studying... This post is nonsense.
Dubito, ergo cognito, ergo eruditio

ard 06-19-2012 11:15 AM
Duplicate post....

watrob 06-19-2012 08:07 PM
Haven't left your Nav DVD disc in the player have you, they keep spinning even when the vehicle is turned off?

PS. my old M-sport 35d draws .75 of a amp even when the car was turned off, the battery would last around 3-4 days depending if I openned a door as the interior lights would come on, same if I openned the rear hatch.

snowsurfer 06-21-2012 08:19 PM
Quote:
Originally Posted by ard (Post 882304)
Not to unsettle you, but if there is an underlying issue with the charging system (or a parasitic discharge) a new battery just masks it for a while.... If you get issues back, and this was a bmwdealer, make sure you press the case that THIS battery was killed by their failur to disgnose

Supposedly they tested for parasitic decharge (I specifically made mention of checking the comfort access modules). We'll see how it goes, there is definetly a difference in how the car "feels" with the new battery though.

watrob 06-21-2012 08:46 PM
If your leaving the X5 sit for a few days it would be wise to run a trickle charge to it, they draw a fair bit of power standing still and there not much you can do about that.

I found that even my iPod connected to the USB was drawing power to keep it charged, I known its not much but it all adds up to nearly 1amp.


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