I purchased a 2005 SC430 back in November 2020. It has Bluetooth for phone calls and when I connect my iPhone 11 Pro it shows connected successfully however when I make or receive a phone call I cannot hear the other end. But they can hear me. The mic in the car is working and all my speakers work for music no problem. Anyone know the Malfunction and how to fix this?

 

These issues are hard to pin down. If I have to guess, it is the phone itself. I had similar issues with my 2006 when I switched to a Motorola phone. My Samsung S7 worked fine but the Motorola didn't. So I bought a Samsung S8 and have had no problems since. The Motorola said it was connected and all my speakers and mic are working but the phone just had issues. Again, the S8 worked right from the start and has been working for about 2 years.

 

I’ve also tried my partner phones which is also a iPhone 11 Pro and same issue. I wonder if it’s the Bluetooth module in the car itself. Because of it was a compatibility issue why does the mic work in the car but not the speakers. I’ve looked at the catalog of oem Lexus parts and cannot for the life of me find the Bluetooth module.

 

I think it's going to come down to how the phone recognizes the bluetooth connection and identifies whether it is an audio devices with both input and output. I don't know a way to manually check what type of device is being recognized on an iPhone.
I would try to pair my laptop to the car and then check my laptop's audio input and output sound options and see if a bluetooth device is available for both input and output. That would at least check the bluetooth module for bidirectional audio capability.
Then again, Lexus might have configured the bluetooth model to only pair with phones.

 

Forget the SC phone and NAV system, use your phone instead. There are many options. Replace your radio with modern unit with Bluetooth capability is one. You can easily achieve the purpose by use a Bluetooth FM that plugged in the cigarette lighter socket, or like me, use the cassette adapter.

 

Is your bluetooth capability an aftermarket one? I ask because I thought that capability did not come stock until 2006 and after? If it did come stock, then I'd suggest looking at the settings on your phone for the fix. Our 06 will sync with both our iPhones - and we've had models from gen 6, 7, 10, 11 and now the 12 Pro.

Good luck,
Rich
Maple Valley, WA

 

do all 2006 and newer SC's have this Bluetooth capability? I never knew that to be so and would like to use it with my iPhone as such before I replace the onboard sound system. is there a set up page in the manual I might have missed?

 

Yes, all the 2006 and newer have Bluetooth capability.

 

Phone conversation only. No music.

 

I believe that Bluetooth was added in 2005.

 

Like to have that clarified because i thought it was added in 2006.

 

Pretty sure it was 2005.

 

Request of someone who has the bluetooth phone option. Where is are buttons on the car to activate and interact with the phone? Curious to know and see a pict of the buttons.

 

Here you are. 07 SC.

 

LOL! I was envisioning a cluster of physical buttons that Lexus had managed to add somewhere.

Didn't think of the Nav screen.

[EDIT: Wife's reaction.... "OMG, the pixels! It's like PacMan era."]