check engine light came on after subwoofer replacement

bmwmotorrad46 · 11-22-2019, 11:59 PM

hi all

I have F48 X1 but I post here cause there are a lot of experience BMW people here.

I have replaced the under seat sub passenger sub (Bavsound)without disconnecting battery and removing airbag connection. Check engine light came on after 3 days. I deleted it via Esys but it came back on.

Can someone please help how can I have a permanent fix like remove battery, and passenger airbag cable, wait for few minutes then plug them back ?

I will replace driver's seat tomorrow but I will definitely disconnect battery and airbag cable this time.

Many thanks for your answers!
Thanks.

Billfitz · 11-23-2019, 08:01 AM

If you removed the seat that broke the connection between it and iDrive. That shouldn't give a check engine warning, it should give an airbag inoperative warning. You need to use an OBD diagnostic and repair tool to reset that.

DreamerJoe · 11-23-2019, 09:03 AM

is it really a check engine light or the /!\ symbol? when adding my subwoofer I got the alert on my dash notifying me to reset my time..if it is your CEL, finding the code would probably be the easiest start.

bmwmotorrad46 · 11-23-2019, 12:24 PM

it is a check engine light. I disconnected battery and airbag cables but it is still there and worse I have airbag light came on

chowser51 · 11-23-2019, 01:24 PM

What’s the code for the check engine light?

bmwmotorrad46 · 11-23-2019, 02:11 PM

i deleted by ista d

bmwmotorrad46 · 11-23-2019, 06:21 PM

after deleted the faults and drove 14 miles, no check engine light is on

1QuikWS6 · 11-24-2019, 01:53 PM

Btw, there is no need to unplug any seat wiring or completely remove seats to replace the under seat speakers

Just remove seat bolts and tip seat back

That way you dont need to disconnect battery at all or go thru the issues you had

bmwmotorrad46 · 11-24-2019, 08:49 PM

I know that I don't need to unplug any airbag cables which I did when I first replaced the passenger seat sub but 3 days later the check engine light came on. That's why I tried that way.

I tried to troubleshoot with ISTA-D this today again after the check engine light came back on. It shows the front speaker (showing each speaker one by one) disconnected with 5 separate Faults. I just tried to delete only one Fault and all of those Faults check engine light got deleted.

bmwmotorrad46 · 12-02-2019, 06:33 PM

fuel ventilation module was failed - it is replaced and so far so good

11-22-2019, 11:59 PM	#1
bmwmotorrad46 Private First Class 49 Rep 153 Posts Drives: BMW X1 Join Date: Mar 2015 Location: Boston iTrader: (0)	check engine light came on after subwoofer replacement hi all I have F48 X1 but I post here cause there are a lot of experience BMW people here. I have replaced the under seat sub passenger sub (Bavsound)without disconnecting battery and removing airbag connection. Check engine light came on after 3 days. I deleted it via Esys but it came back on. Can someone please help how can I have a permanent fix like remove battery, and passenger airbag cable, wait for few minutes then plug them back ? I will replace driver's seat tomorrow but I will definitely disconnect battery and airbag cable this time. Many thanks for your answers! Thanks.
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11-23-2019, 08:01 AM	#2
Billfitz Lieutenant General 8243 Rep 16,079 Posts Drives: '15 328iX GT Join Date: Jan 2015 Location: New Hampshire iTrader: (0)	If you removed the seat that broke the connection between it and iDrive. That shouldn't give a check engine warning, it should give an airbag inoperative warning. You need to use an OBD diagnostic and repair tool to reset that.
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11-23-2019, 09:03 AM	#3
DreamerJoe Captain 241 Rep 762 Posts Drives: 2017 340i M.G. w red interior Join Date: Dec 2018 Location: SoCal iTrader: (0)	is it really a check engine light or the /!\ symbol? when adding my subwoofer I got the alert on my dash notifying me to reset my time..if it is your CEL, finding the code would probably be the easiest start. __________________ MG F30 M-Sport 6mt FBO w/ MHD stage 2 plus (PWG), ST XA Coilovers, 19" VMR V804.
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11-23-2019, 12:24 PM	#4
bmwmotorrad46 Private First Class 49 Rep 153 Posts Drives: BMW X1 Join Date: Mar 2015 Location: Boston iTrader: (0)	it is a check engine light. I disconnected battery and airbag cables but it is still there and worse I have airbag light came on
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11-23-2019, 01:24 PM	#5
chowser51 Colonel 2025 Rep 2,808 Posts Drives: F33 430 and F39 M35i Join Date: Feb 2009 Location: Cleveland, OH iTrader: (3) Garage List 2018 BMW 430i xDrive [0.00]	What’s the code for the check engine light?
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11-23-2019, 02:11 PM	#6
bmwmotorrad46 Private First Class 49 Rep 153 Posts Drives: BMW X1 Join Date: Mar 2015 Location: Boston iTrader: (0)	i deleted by ista d
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11-23-2019, 06:21 PM	#7
bmwmotorrad46 Private First Class 49 Rep 153 Posts Drives: BMW X1 Join Date: Mar 2015 Location: Boston iTrader: (0)	after deleted the faults and drove 14 miles, no check engine light is on
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11-24-2019, 01:53 PM	#8
1QuikWS6 No 55mph 1621 Rep 8,476 Posts Drives: F32 435ix MSport Join Date: Jul 2009 Location: Blitzburgh, PA iTrader: (113) Garage List 2022 BMW M440ix Vert [0.00] 2015 BMW 435ix MSport [0.00] 2000 Pontiac Trans Am [0.00]	Btw, there is no need to unplug any seat wiring or completely remove seats to replace the under seat speakers Just remove seat bolts and tip seat back That way you dont need to disconnect battery at all or go thru the issues you had __________________ F32 435ix//MGM//M Sport-Prem-Tech-Driver Assist-Lighting-Cold Weather-Dyn Handling Pkgs//M4 Black Lthr Int w/M4 Alum Blade Trim//HK w/Bavsound Stg3//763M//M4 Euro LCI Tails//M4 Mirrors w/CF Covers//AWCarbon CF F/R Spoilers-Side Splitters-Diffuser 6WB/ID6 HU+HUD/IND M4 Alcantara Armrest//PURE S2 Turbo//AA FMIC+DP//ER CP+TIC//3.5bar TMAP/TS DV//AWE Tuning Exh w/Blk Tips//Turner MS CF Intake//BM3 Cary Jordan Tune//MPerf Diff//PrecRW Ignition Kit
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11-24-2019, 08:49 PM	#9
bmwmotorrad46 Private First Class 49 Rep 153 Posts Drives: BMW X1 Join Date: Mar 2015 Location: Boston iTrader: (0)	I know that I don't need to unplug any airbag cables which I did when I first replaced the passenger seat sub but 3 days later the check engine light came on. That's why I tried that way. I tried to troubleshoot with ISTA-D this today again after the check engine light came back on. It shows the front speaker (showing each speaker one by one) disconnected with 5 separate Faults. I just tried to delete only one Fault and all of those Faults check engine light got deleted.
	Appreciate 0 Quote

12-02-2019, 06:33 PM	#10
bmwmotorrad46 Private First Class 49 Rep 153 Posts Drives: BMW X1 Join Date: Mar 2015 Location: Boston iTrader: (0)	fuel ventilation module was failed - it is replaced and so far so good
	Appreciate 0 Quote