Member
Bluetooth "CD changer" never sleeps, drains battery
Hi guys,
I had battery drain caused by CD changer on my E46, which was always "shuffling" between CDs, even when the car was off and locked, and killed the battery overnight. I solved this by removing the CD thingy from the changer.
However, today I installed bluetooth module which replaces the CD changer. Works fine, BUT GUESS WHAT. It never sleeps. After installation, I turned the car off and the bluetooth turned off. I was like "phew thanks god" and I proceeded to complete the trunk carpets back to place. Once done, the bluetooth turned on again.
So it turns off, and then, when the car is off and locked, and even the radio is off, it turns back on after few seconds. I disconnected the battery and I'm thinking about how to fix this.
Do I need to reconnect the cables to cut the power to the "CD changer" when the car is off, or is there easier solution please?
Thanks. Drive safe.
Tomas
Wagon meister :)
BMW Tech Expert
What head unit are you using, factory OEM, or an aftermarket unit?
Darin
Current:
16 220i Active Tourer Platinsilver MET (C08)/Dakota Black (PDSW), P7ACA, P7LDA, P7LHA, P9BDA, 6sp Manual - Wife's new toy!
05 325it Electric Red(438)/Gray(N6TT) ZCW, ZSP 5sp Manual Back set cover, trunk mat, Euro Infra-Rot front windshield, and mud flaps! Mr. Wagon My new Winter car.
05 M3 Imolarot II(405)/Gray(N5TT) ZCW, ZPP 6sp Manual C.F. Lip, CSL diffuser, SSK, Euro Infra-Rot front windshield and a trunk liner! Mr. Go_Fast Stored for the Winter
Past:
95 318is Montreal Blue Met (297)/Beige(K1SN) RIP, killed by an Idiot.
84 M535i gray market Burgandy Rot Met/Black Leather Lowered by Intrax on bilies, poly everywhere, B&B cat back system, K&N, and a hitch! Da Beast - Still running w/400k+!
91 316i euro Tizianrot/Gray cloth - E-36 w/M-40 RIP, but great on gas! Best was 38 MPG
82 528i euro Saphire Blue Met/Blue Leather RIP
79 525 euro Green/Green RIP
79 318 Silver/Black - The first one that got it all started
M-Flight Member
Member
Thank You for your response. It's stock BMW Business head unit with MC cassette slot, and Harman Kardon audio system
Member
What bluetooth unit did you get?? I had the same problem with a Chinese unit. And my radio and CD player were bad.
Sent from my SM-G970F using Tapatalk
Last edited by kaputme; 09-18-2020 at 09:56 AM.
Jbird
When unplugged regardless of what was plugged in does the drain go away and how are you measuring this drain.
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