E90Post
 


Coby Wheel
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > AUDIO/VIDEO + BLUETOOTH + Electronics/Alarm/Software > e91 factory radio, false detection of CD load



Reply
 
Thread Tools Search this Thread
      01-24-2021, 01:09 PM   #1
Brian86
Private
Brian86's Avatar
54
Rep
73
Posts

Drives: e36 M3, e91 325xi, N50 Xterra
Join Date: Dec 2020
Location: Pittsburgh

iTrader: (0)

e91 factory radio, false detection of CD load

My e91 with an OE audio system is intermittently detecting a 'false CD' or 'false CD load' which causes the input to switch temporarily to to the CD.

Doesn't seem like a common problem. Looks like it's a lot more likely for CDs to get stuck.

It's really annoying. Particularly now that even with the radio turned off I can still hear the CD player wirrring away trying to load/spin a CD.

I assume there is an optical sensor that is getting triggered (or untriggered) so my first fix will be blowing a can of air into the slot to try and clear any potential debris off the sensor.

Next I think I'll try actually loading a CD. I've had the car for 6 months and haven't actually tried the CD player. Perhaps just leaving a disk in will stop it from getting into a cycle of continuous false-loading.

I'm not opposed to tearing the thing apart. It took about a dozen fixes to my e36 HVAC and radio before they stopped malfunctioning.
Appreciate 0
      02-06-2021, 02:57 PM   #2
Brian86
Private
Brian86's Avatar
54
Rep
73
Posts

Drives: e36 M3, e91 325xi, N50 Xterra
Join Date: Dec 2020
Location: Pittsburgh

iTrader: (0)

So, bringing this to a close. (in the unlikely event anybody ever searches)

I took the lazy route and loaded an audio CD into the player. Now that it senses the disk it doesn't periodically switch my inputs around.

Not really 'fixed' but 'fixed enough' for me.
Appreciate 0
      02-06-2021, 04:01 PM   #3
ctuna
Lieutenant General
1258
Rep
10,958
Posts

Drives: 325xi 06 wagon MT
Join Date: Jan 2010
Location: Santa Cruz, Ca

iTrader: (0)

Did you try any kind of cleaning .
1) With forced air of Vacuum as a first attempt .
2) Remove Radio take the cover off and clean and inspect for
dirt and damage.
3)You can get used Radio's pretty cheaply but you have to program
them for the Sound System and options in your car most of the time.
Appreciate 0
      02-06-2021, 04:11 PM   #4
Hotter
Private First Class
Hotter's Avatar
13
Rep
195
Posts

Drives: BMW E92 328i
Join Date: Feb 2018
Location: Lithuania

iTrader: (0)

Remove CD module completely. The module is inside the radio. Its quite easy to remove it from radio just unscrew and unplug it. I don't believe anyone will use CD any more. + you save extra weight = more hp
Appreciate 0
      02-06-2021, 05:28 PM   #5
Brian86
Private
Brian86's Avatar
54
Rep
73
Posts

Drives: e36 M3, e91 325xi, N50 Xterra
Join Date: Dec 2020
Location: Pittsburgh

iTrader: (0)

I tried blowing it clean with a can of air, and tinkered around with some general internet searches to no avail.

Didn't remove or disassemble it. Perhaps someday but now it's way down life's priority list since I have a 'good enough' fix.
Appreciate 0
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 10:36 PM.




e90post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST