2008 x3 3.0 getting ready to take car to dealer to work on some oil leaks valve cover presumably and transmission pan. Showing son how to change wipers. Battery goes dead on us. Jump start. no response. Charge battery. No response. Charge battery seemingly full after 5 hours with cables disconnected and now nothing. lights etc all come on but no sign of cranking life. is there a reset or security code need possible? frustrating! I suspect I need a new battery as it has been slow to crank but seems it should start off a jump start or a full charge from a decent battery charger. Thoughts?
If the battery is more than 4-5 yrs old it's probably toast. Have it load tested. Check all cables and clean with a wire brush. Otherwise maybe a key transponder issue.
don't think its key as both keys have same outcome.
My X3 did the same thing. It ended up being the starter. Have it tested before spending $200+ on a battery.
2011 Z4
2010 MB GLK 350
2000 M Roady
1998 Lincoln Mark VIII LSC
1996 Z3
Sounds like the same symptoms I had when my starter went out. It's worth a try to give the starter a rap with something to see if it starts afterward. I was able to give mine a hit from underneath using an 18" breaker bar.
Current Garage:
91 e34 M5 - spoiled & demanding 27 y/o -glanzshwarz
91 850i/6 -another spoiled & demanding 27 y/o- schwarz-gone but never forgotten
06 325i - undeserving, spoiled & demanding 27 y/o daughter's DD-hellrot
03 MINI Cooper S JCW -spoiled & demanding, yet deserving wife's DD - Chili/Panther
05 X3 3.0i -family workhorse - diamond schwarz
12 X5 3.5d - torque monster - space gray metallic
86 GMC Cabellero - Old Faithful 32 y/o DD BMW Support Vehicle
08 Cub Cadet 19HP 46" hydrostatic- yard vehicle
88 Schwinn Sierra - 1WD Off Road Vehicle
e31 & OHC BMW CCA #385540
Only other thing could be bad ground straps
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