My car started displaying the vehicle on lift icon (CC-ID 415 - Increased Battery Discharge). I also noticed my LED light bars and AEs stopped lighting up when unlocking the car. Took it to the dealer who determined the battery was bad. They blamed it on my aftermarket amplifier and EQ, so it wasn't covered under warranty (not sure if it would have been anyway?). The amp/EQ stay powered on about 60 seconds after locking the car. The dealer believes this killed the battery over time. I think this is normal - I used an installer who does tons of BMWs - hopefully someone can confirm. Then I found out the cost for a new one
I was quoted $650 - $400 for the battery and $250 in labor. They ended up price matching another nearby dealer who was about $100 cheaper. Labor stayed at $240 - what a rip. I was told they used a larger battery which should work better with the aftermarket equipment. BMWPartsSupply has the battery for $235.
