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Discussion Starter · #1 ·
How long can these cars sit until the battery is dead? I do not have the alarm armed so I was curious if the car can sit for an extended period of time or if I should just get a battery tender.

Thanks.
 

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If you own a "smart" car, it does a lot of thinking....and after one month the battery might be "extremely" low... "extremely" low battery's in M5's bring all sorts of warning messages and "false" symptomatic problems....sooooo Get a Battery Tender and put the pigtail that comes with it permanently on the battery terminals always plug it in when not using the car....battery will last twice as long...
 
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