About 4 months back I installed an F90BT in my 2006 A4. Since then I have not been able to solve the intermittent FM reception problem. My stock Symphony head unit never had an issue with FM reception, however ever since installing the F90, the FM reception constantly goes in and out.
I am using the powered antenna adapter. I have actually tried multiple versions of the powered adapter (Metra 40-VW53, Metra 40-VW54, and even a non powered adapter.
Anyone have any recommendations? TIA
how did you hook up the unit so that it only turn on when the car was on? Do you have the yellow wire connected to the red?
I have the unit hooked up so it only turns on with the car (I think it was yellow to yellow). For the antenna I have it connected to the blue powered antenna wire out of the Pioneer.
did you have to get the CONNECTS2 or PAC adapter?
did you have to get the CONNECTS2 or PAC adapter?
For steering wheel control... yes? Would this have anything to do with intermediate static FM reception?
Sounds to me like your power wire (blue from the Pio harness) is not supplying the Audi antenna amplifier with all the power it needs in a nice seamless manner. Perhaps you can connect a separate 12 volts (fused) positive wire to the amp-turn on wire (the audi wire) instead of the blue wire -- have the new power line be triggered off the accessory wire (you'd need an automotive relay) -- if you are gunna give this a try lemme know and i'll post instructions
Sounds to me like your power wire (blue from the Pio harness) is not supplying the Audi antenna amplifier with all the power it needs in a nice seamless manner. Perhaps you can connect a separate 12 volts (fused) positive wire to the amp-turn on wire (the audi wire) instead of the blue wire -- have the new power line be triggered off the accessory wire (you'd need an automotive relay) -- if you are gunna give this a try lemme know and i'll post instructions
I'm willing to try anything that might solve this. TIA
You should be able to just connect the red wire additionally to the power lead for your antenna. If you want to provide a totally separate line of power -- you'll need to find a 12 volt source and wire in a 30volt SPDT relay as follows:
85: ground
86: Accessory (red wire)
87: wire to power lead of Audi antenna
30: 12 volts fused + (from battery or another 12 volt source in the vehicle)
Well using just the 12 volt accessory wire didn't help. I guess I can go with trying a completely independent 12 volt, but other than that what could it be? A bad antenna cable?
connecting the blue wire from the f 90 harness did it for me. mine was professionally installed but the installer missed that wire. He tried 3 different antenna adapters but none changed anything. some where you should find a blue wire in your a4 wiring that isn't connected.
Ya the blue wire is connected, that's not the issue.
So, I'm at a loss now. I have checked the blue lead (5 times now). I have run an independent 12V from the battery to the amplified antenna. I have checked that the power lead from the Metra kit is also connected, and I still get static FM, and in and out reception.
I guess my other option is to run a totally independent AM/FM antenna? Anyone have any recommendations?
TIA
Well using just the 12 volt accessory wire didn't help. I guess I can go with trying a completely independent 12 volt, but other than that what could it be? A bad antenna cable?
If the antenna amplifier worked OK before the F90BT install, have a look at the connectors... FAKRA connectors can easily (OK, what is easy, you need to put some pressure on it) be connected with the centra pin bent, so effectivily not connecting at all. Also check the connection to the F90BT... my experience with the installation on my VAG car used a crummy 'phantom power supply' that had a wrong size central pin (to short and to small) and a bent FAKRA pin, the system was professionally installed by the VAG dealer -)
From : http://www.audicrazy.com/B6A4/Bentley_Audi_A4_B6_Radio.pdf page 19-21... The A4 has a complex antenna system with antenna selector unit installed. The F90BT does not control this unit... might be part of your problem?
Go to http://www.pioneerelectronics.com/Stati ... al0722.pdf and check on the antenna status, power or radio. make sure you check the voltage on the pioneer antenna wire.
Do a search for antenna control in the above link.
Rick
I've been having a similiar problem with my unit in my '08 Lancer Evo MR. The stock sounded great, put in the F90BT and now the radio reception is crap.. a lot of static. Did you ever figure out the problem? I'm not sure what I can do to fix the problem.
Not an Audi, but a Jeep Grand Cherokee also with the same problem with an F90BT. AM all static FM fades in and out, HD Radio is louder but not much better. tried a separate antenna moved around in inside of car I found if i held that antenna by the tip and held onto my big toe on my right foot ...only kidding! but the reception problem isn't funny I live near Boston and can't receive WBZ AM at all even in HD and the local sports radio fades in and out even rolling up to a stop light. really almost unusable. Help Please any ideas Its a factory non-powered stock antenna so no need for blue wire.
Thanks
Bob