Audi Forums banner

A3 has a faulty volume control

9800 Views 12 Replies 12 Participants Last post by  Broady
I've got an A3 , it has a faulty volume control. When i try and adjust the vol ,it either goes mega loud or silent. when you turn it off then on again it resets to an adequate level. It become very difficult to control these volumes.

Anyone know how to fix it without having to replace????
1 - 2 of 13 Posts
Its knackered, two of my headunits have done this, you need to get it replaced under warranty if you are still covered. It can get very embarrasing trying to adjust to volume in a busy public street
dead simple as to why... the radio has a microprocessor (Chip) with an eeprom to store the memory in. this eprom has temporary memory which is lost when power is removed and can be written to LOADS of times, it also has permanent memory which doesn't loose it's data but can only be written to say 10,000 times. the software for the radio writes into permanent memory every volume adjustment, so after a while it starts to loose the memory of the volume setting and hence blasts it out or very quiet. you can get a new microprocessor reprogrammed with a modified software which is readily available, but specialists charge bout £70.
I've tried sourcing this microprocessor but is seems obsolete.
you'll notice it only does it when the unit is cold normally, this is because as it heats up, the material in the eeprom memory is more easily written to.
1 - 2 of 13 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.