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      08-17-2018, 10:23 AM   #5
GEOS07335i
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Drives: 08 335i
Join Date: Apr 2017
Location: Atlanta

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Batteries that are on thier way out tend to cause multiple gremlins in our cars. I just got done replacing mine for $100 with a walmart battery. It was close not exact match. Also i was able to reset it with MHD. If it's diffrent amp hours you will have to also code it. It's not a too difficult job as a DIY try and get an exact match and you just have to reset it instead of coding. Exact match would be more expensive especially if you go OEM. But regardless if it's 9yr old battery time for a replacement.

The way I could tell when mine was going was clock would reset and my convenience key option would not work if the car sat for a day or two. But if I drove around for an hour it would work fine. Change your battery and you should be good to go.
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2008 335i E93, DP's, 7" FMIC, DCI,CP TIAL Q BOV, MHD Stage 2+, Alpina Flash
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