Cadillac STS Forum - 2005 through 2010Forum for discussions regarding the new Sigma-based STS model. Not for Cadillac "Seville" discussions (2004 and older).
The bluetooth and the iPhone seem to work correctly with the annoying exception that once I have given a command to call a number a VERY LOUD whining noise is heard. This seems to have no relationship to the RPM of the engine. It seems to happen 2 out of 3 times I use the voice command. My dealer installed a filter recommended by GM but it did not change the noise at all. Seems like it is a software issue where once the call is dialed the system needs to mute until ringing starts. Anybody else having this problem. My family has 5 (five) iPhones, car has problem with all. Wife has mitsubishi no problems (Rockford / Fosgate). Love all other aspects of the Car. Love to drive it. Wish I had gotten Heads Up. Maybe next time...
I have an iPhone and have the same buzzing issue occasionally when connecting a call in my 2006 STS-V. I had the software on my nav system updated (presumably to the same software version you have in your newer car) and although I have fewer occurrences of this, it still happens occasionally.
I think what you are hearing is not electrical noise, but rather the actual data stream between the phone and the nav unit. It is interpreting it as actual voice data rather than something else (call setup data?), and the nav unit is trying to send it to the speakers thinking it is voice.
It is definitely a software compatibility issue between the iPhone implementation of bluetooth and the Denso implementation.
I don't know how to resolve it other than hope that the software updates on the iPhone eventually address it. I'm currently on iPhone version 1.1.1.
I'm sure if we report it to Apple and Denso they will just point fingers at each other. Bluetooth is a very ill defined standard that leaves a lot of interpretation to individual manufacturers, so it may just be something that you have to live with.
If I hear something different, then I will post it here.
I too have an iPhone (1.1.1) and a 2006 STS V8. I don't notice a persistent hum, but I do get greeted with an extremely loud and ear-piercing buzz noise when I use my hands free.
It may be the annoying interference caused by the GSM technology that Cingular Wireless has. When I had Cingular Wireless, I had that same annoying GSM interference sound. When I switched to Verizon Wireless, that annoying sound was gone due to the CDMA technology.
Going from Cingular to Verizon was a world of difference better.
I too have an iPhone (1.1.1) and a 2006 STS V8. I don't notice a persistent hum, but I do get greeted with an extremely loud and ear-piercing buzz noise when I use my hands free.
Yes, the ear splitting buzz is what we're all talking about.
With regards to AT&T(Cingular) versus Verizon, I had AT&T service with a Motorola RAZR and experienced no bluetooth issues. It wasn't until I switched to the iPhone that I started getting the buzz when it is setting up a call. During the call there is no problem.
Now, that said, there is NO way I'd go back to the RAZR. The iPhone is just too awesome!
A bigger problem for me is the fact that the radio does not mute when I accept an incoming call. As the call is displayed on the nav screen and the phone rings, the radio is mute. As soon as I answer, the radio turns back on and drowns out the person who is calling.
Does anyone else have this problem? Anything I can do about it?
A bigger problem for me is the fact that the radio does not mute when I accept an incoming call. As the call is displayed on the nav screen and the phone rings, the radio is mute. As soon as I answer, the radio turns back on and drowns out the person who is calling.
Does anyone else have this problem? Anything I can do about it?
That can be solved by upgrading the software on the nav system. I assume that your car is still under warranty? Report that to your dealer. They can order the upgrade disks for the nav and upgrade the software. I did that, and since the upgrade I have had no further problems with the radio failing to auto mute. Before the upgrade, auto mute never worked properly.
My wife has a Mitsibushi with bluetooth (Fosgate? unit) and no problem with their implementation. I just hope that Cadillac will upgrade the software soon. Apple seems to be selling a large quantity of these iPhones.
My wife has a Mitsibushi with bluetooth (Fosgate? unit) and no problem with their implementation. I just hope that Cadillac will upgrade the software soon. Apple seems to be selling a large quantity of these iPhones.
Byron...
Good luck with that. Let us know how it turns out. As it stands now the three phones that are supposed to work with bluetooth are over three years old. They haven't added any new phones to the list since the bluetooth unit came out...
I too use the iPhone with my 07 STS. The bluetooth works very well compared to my Nextel and the iPhone gives better options such as using the speakerphone, sts, or just handset. I like the user-friendlyness although that buzz in the beginning scares the hell out of me!
