I am getting the check charging system and the battery light in my 06. The car drained itself dead luckily while at autozone. Battery tested 11 v but wouldn't crank. It eventually accepted a jump after being attached for about 3-4 minutes. Once started it died after a few minutes running. New battery started right up but once the air ride begins which sounds like it's struggling to air up the check light comes on. Guessing something is draining my power. Anyone able to pinpoint this? At this point the volt meter is good even when the check light comes on.