05 stereo ?

chelsea · Post by **chelsea** » Mon Oct 20, 2014 7:59 pm

Have noticed my stereo seems to switch volume levels sometimes?

I will be driving along and then it seems to sound much better /louder/clearer, then it seems to drop out slightly again, is this a common problem??

p.s. the passenger side rear door speaker is not working.

X5Sport · Post by **X5Sport** » Mon Oct 20, 2014 9:33 pm

It might be the radio switching between mono and stereo if coverage is poor, but there is also a speed function that increases the volume with speed. The first step is around 30mph if I remember mine correctly. There was a second one around 70 I think.

You will also get a step change if a traffic broadcast comes on.

Richard

chelsea · Post by **chelsea** » Tue Oct 21, 2014 6:53 am

Thanks Richard, didnt spot that in my manual, yep it is noticeable at low speeds so does suggest its doing what its supposed to

chelsea · Post by **chelsea** » Wed Oct 22, 2014 6:27 pm

also my left n/s rear door speaker aint working, I have read that the stereos are a bit chocolate, is it likely to be a channel down on the amp or something?
cheers

Reusch · Post by **Reusch** » Wed Oct 22, 2014 9:07 pm

Probably the bm54 unit is faulty.

X5Sport · Post by **X5Sport** » Wed Oct 22, 2014 9:20 pm

Or check that all the pins on the 'quad lock' connector on the amp are fully home. I had just one speaker out and it was the wiring. It was the same one and if memory serves it's a green wire.

Richard

ChrisLux · Post by **ChrisLux** » Fri Oct 24, 2014 1:21 pm

Sounds like the BM54 could be on the way out, but they can be repaired/upgraded by Baris at
http://www.carphonics.co.uk/bm54upgrades.htm

See this thread ; http://xdrivers.co.uk/forum/index.php/t ... 471.0.html

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