G20 BMW 3-Series Forum - View Single Post

bombstar · 04-18-2020, 01:44 AM

Is the hum from the back of the car? My car was having this issue and they traced it to the rear windshield heater having a short because of the TSB for the seal. That said, these batteries drain somewhat fast anyway, so its probably ok.

04-18-2020, 01:44 AM	#4
bombstar Private 9 Rep 50 Posts Drives: 19' 330i Sport Line Join Date: Jun 2019 Location: San Diego, CA iTrader: (0)	Is the hum from the back of the car? My car was having this issue and they traced it to the rear windshield heater having a short because of the TSB for the seal. That said, these batteries drain somewhat fast anyway, so its probably ok.
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