Fixed Comfort Access problem after installing wireless charging pad

fidozoom · 03-29-2021, 03:12 PM

I recently followed the instructions here to install a wireless charging pad (this one from amazon: ) in my 2016 M4 Convertible.

I didn't bother to disconnect the battery as I found that it was such a pain to access the battery in the vert (still haven't found a good way - if someone does please let me know!). Probably a bad idea as I had the battery discharge to less than 65% (per Bimmerlink).

When I was done, comfort access wasn't working! The key fob worked fine to unlock/lock/start the car but the door handles weren't doing anything. Bimmerlink showed all kinds of codes - reproducing them below in case others have the same codes and are searching for them.

1C Integrated chassis management
5 errors
48010F: Dynamic Traction Control button - line interruption
482797: M-Drive - EDC - line break
4827EE: M-Drive - EPS - line interruption
482714: PDC line interruption
4827E1: Top - side view camera button line interruption

72 Driver's side footwell module
2 errors
030101: FH FAH, relay closing, no output voltage: relay adhesive or fuse defective or short circuit to ground
030181: FH BFH, relay closing, no output voltage: relay adhesive or fuse defective or short circuit to ground

I think the above were because I had to remove the buttons next to the shift lever as shown in the video above. Once I cleared them, they didn't come back.

But these were persistent and seemed to coincide with comfort access not working.

40 Car access system
2 errors
804107: Front interior antenna (IRV): Line interruption
8041A8: Welcome Light repeat lock active

After a lot of searching I found this post but for a 5-series: https://f10.5post.com/forums/showthread.php?t=1242359

I removed the cupholders and figured I had forgotten to connect one of the cables! This cable is a small black connector that goes into a small module right below the cup holders. I previously wondered what this module was when I doing the install. Now I knew! Looks like this module has the antenna for comfort access.

Once I reconnected that and put everything back together comfort access was working again!

Just wanted to document this here for future reference.

Dav3 · 03-30-2021, 08:22 PM

Last time I checked, this wireless charger wasn't compatible with m3/m4 center dash layout

Is the charger protruding too high?

fidozoom · 03-31-2021, 01:09 PM

Here are some photos. It's not flush but I love how minimalist it looks compared to the Sighil charging pad I tried originally. This charging pad was much sleeker though it required a more intrusive install.

It seems to work fine though I haven't checked the charge rate yet. I attached it with double sided velcro so I can access the cigarette lighter and tray inside if needed. The rubber pad on top seems to keep my iphone xs with a slim TPU cover in place even during hard turns.

N44RP · 12-21-2021, 06:53 AM

I’ll be doing this install next month, thank you for sharing this!

I also went with this pad because of its low profile compared to other offerings

Mp3Supply · 12-26-2021, 12:25 PM

can you still close the top? I assume that piece is still there?

03-29-2021, 03:12 PM	#1
fidozoom Second Lieutenant 33 Rep 278 Posts Drives: 2016 BSM M4 Convertible Join Date: Apr 2005 Location: Seattle, WA iTrader: (2)	Fixed Comfort Access problem after installing wireless charging pad I recently followed the instructions here to install a wireless charging pad (this one from amazon: ) in my 2016 M4 Convertible. I didn't bother to disconnect the battery as I found that it was such a pain to access the battery in the vert (still haven't found a good way - if someone does please let me know!). Probably a bad idea as I had the battery discharge to less than 65% (per Bimmerlink). When I was done, comfort access wasn't working! The key fob worked fine to unlock/lock/start the car but the door handles weren't doing anything. Bimmerlink showed all kinds of codes - reproducing them below in case others have the same codes and are searching for them. 1C Integrated chassis management 5 errors 48010F: Dynamic Traction Control button - line interruption 482797: M-Drive - EDC - line break 4827EE: M-Drive - EPS - line interruption 482714: PDC line interruption 4827E1: Top - side view camera button line interruption 72 Driver's side footwell module 2 errors 030101: FH FAH, relay closing, no output voltage: relay adhesive or fuse defective or short circuit to ground 030181: FH BFH, relay closing, no output voltage: relay adhesive or fuse defective or short circuit to ground I think the above were because I had to remove the buttons next to the shift lever as shown in the video above. Once I cleared them, they didn't come back. But these were persistent and seemed to coincide with comfort access not working. 40 Car access system 2 errors 804107: Front interior antenna (IRV): Line interruption 8041A8: Welcome Light repeat lock active After a lot of searching I found this post but for a 5-series: https://f10.5post.com/forums/showthread.php?t=1242359 I removed the cupholders and figured I had forgotten to connect one of the cables! This cable is a small black connector that goes into a small module right below the cup holders. I previously wondered what this module was when I doing the install. Now I knew! Looks like this module has the antenna for comfort access. Once I reconnected that and put everything back together comfort access was working again! Just wanted to document this here for future reference.
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03-30-2021, 08:22 PM	#2
Dav3 Major 1046 Rep 1,068 Posts Drives: G80 M3 xDrive \| 718 GT4 PDK \| RS3 8Y \| F56 MCS Join Date: Oct 2016 Location: Europe iTrader: (0)	Last time I checked, this wireless charger wasn't compatible with m3/m4 center dash layout Is the charger protruding too high?
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03-31-2021, 01:09 PM	#3
fidozoom Second Lieutenant 33 Rep 278 Posts Drives: 2016 BSM M4 Convertible Join Date: Apr 2005 Location: Seattle, WA iTrader: (2)	Here are some photos. It's not flush but I love how minimalist it looks compared to the Sighil charging pad I tried originally. This charging pad was much sleeker though it required a more intrusive install. It seems to work fine though I haven't checked the charge rate yet. I attached it with double sided velcro so I can access the cigarette lighter and tray inside if needed. The rubber pad on top seems to keep my iphone xs with a slim TPU cover in place even during hard turns. Attached Images
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12-21-2021, 06:53 AM	#4
N44RP First Lieutenant 98 Rep 313 Posts Drives: M3 Join Date: Mar 2018 Location: East iTrader: (0)	I’ll be doing this install next month, thank you for sharing this! I also went with this pad because of its low profile compared to other offerings
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12-26-2021, 12:25 PM	#5
Mp3Supply Private First Class 314 Rep 196 Posts Drives: 2023 G80 Join Date: Apr 2009 Location: Austin, TX iTrader: (0)	can you still close the top? I assume that piece is still there?
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