Learn how to UNLOCK your cluster (if you don't already) so that you can immediately check the battery's voltage. If it is below 11.89 volts...then it is dropping below 0% state of charge...and depending on other factors may or may not start the car.

If the battery voltage is down as low as 10.8 volts...then you probably will need a jump or a charge...and having the cluster UNLOCKED and running TEST 9 helps here, too. You can watch the battery voltage climb as you are hooked up to a charger or jumper cables...thus you'll know when you've reached at least 12 volts before attempting to start the vehicle.

Also make sure that all your battery cables are tight against the terminals...and that your battery hold down clamp is correctly mounted over the foot of your battery to prevent it from sliding back and forth...or moving up/down as you drive over bumps. Not having the battery secured...can cause the cables to work loose as the battery moves around.

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• 2015 f06 650ix GC (Moonstone exterior/Cohiba brown Merino Leather interior)
• 2014 f15 X5 50i (Space Gray exterior/Mocha Nappa Leather interior)