radio has mind of its own

[ash318]

hi has anybody had problems with there head unit. mine only plays up when the car is cold ie morning if i touch the volume knob it just goes bannanas and nearly deafens me any ideas?

[mrditto]

Mine started doing it as well a couple of months ago - also only first thing in the morning.

Scares the hell out of the kids when it happens!!

[oneye]

mine also did this , went on for a few weeks just on startup and eventualy refused to work at anything less than child scaring volumes . new head unit was about £180 if i remember. cd changer also packed up about a month after .

[Olly_K]

yeah i've had this one. Very good for waking up at 9 in the morning.
I'm not sure if this actually worked or if the problem just went away but I got some compressed air spray and just sprayed it in the gap around the volume knob.

Been good ever since. !

[tartan_rob]

Its a common problem. There is company in Calne, Wiltshire (someone electronics). They do repairs for about £50-60. They have to replace the chip board on the ECU and they wipe the security code and give you a new one but the unit comes back brand new....saved me...

[Wak]

same on the early TT's its common and annoying!

[teknobod]

It's a common problem, but only affects the Blaupunkt head units.

You can buy the head units on Ebay, but if you do, I would try and purchase the Panasonic type as people will try to sell the faulty Blaupunkt head units and hide the fact that they are faulty. (Crooks on Ebay - surely not ! )

Andy

[ash318]

thanks guys i think i will have to get it repaired as its packed up altogether now once again cheers

[Wak]

It's a common problem, but only affects the Blaupunkt head units.

You can buy the head units on Ebay, but if you do, I would try and purchase the Panasonic type as people will try to sell the faulty Blaupunkt head units and hide the fact that they are faulty. (Crooks on Ebay - surely not ! )

Andy

how can you tell the difference dont they have the same face?

Is there a sticker or part number to check for?

[teknobod]

I've just quickly found a website that gives the following info:-



AUDI CONCERT AUZ2Z3 4B0 035 186G GRUNDIG
AUDI CONCERT AUZ5Z3 4B0 035 186B PANASONIC CQ-LA1621L
AUDI CONCERT M4 AUZ1Z3 4B0 035 186C BLAUPUNKT
AUDI CONCERT NAV AUZ1Z3 4B0 035 186B BLAUPUNKT
AUDI CONCERT PLUS AUZ1Z3 4B0 035 186E BLAUPUNKT



I think the underlined numbers in italics are the ones to look for and should be on a label on the r/h side as you look at the front.

Another site which is quite useful for id numbers is:-

http://codedradio.info/?i=bn&sortby=A

Hope this helps

Andy

[Mc-BigE]

Mine has started waking up my next door neighbour in a cold morning!
Serves him right for banging doors in the middle of the night! (Semi-detached house)
Will vag-com do anything for it or will I need to send it to be repaired as Tartan Rob has done?
Is there a time limit in the morning before I should touch the volume on a cold morning?

[tartan_rob]

When the unit is warm it is less tempramental. I thik the revised control unit fitted by OE Electronics is revised and this fault is unlikely to occur.

[teknobod]

When the unit is warm it is less tempramental. I thik the revised control unit fitted by OE Electronics is revised and this fault is unlikely to occur.

Unfortunately, the fault will occur again, but probably not while you still own the car.

Apparently, the fault is due to the fact that the RAM used for the volume control data can only be overwritten a finite number of times, and because it is integral to the microprocessor, the MPU has to be changed which means that the code usually changes and the whole tuner/rf settings have to be reprogrammed.
However, at some point in the future the internal RAM will again fail. It will last longer if you don't play with the volume too much though!!

Andy