Electricians and those familiar with the electrical components please opine.

So I bought a Bluetooth adapter from sc430mods. I installed it following the YouTube instructions and after some frustrations I got it going and I thought all was fine at first. It was quirky the next day by not even going to cd function for the Bluetooth audio to play on but since I never plugged back in AM/FM chords the channel was free for it to come through anyways so no big deal. I work the next 3 day and it rained the following 2 so I left the car in the garage top down.

Yesterday the sun was out and I got in and took it to my friends house. First thing I notice while starting to drive was now the radio unit is completely unresponsive and even the ac control unit as well to a large degree. Even the door for the radio unit no longer responded.the ac control unit still displayed time and the hazards worked but no other button did, nor did it display temperature and range like it always used to. Even the buttons for the navigation screen were unresponsive. When I was sitting still I tried to see if the top would react and it did not and that scared the hell out of me. Get to my friends and I tear into my car right there in the driveway and unplug the Bluetooth device right where I fed it down by the shifter. I put my car back in the on position and an odd noise came through but I could manipulate the top back up again. Thank God too as clouds were forming and it was getting COLD 2 hours later. Still I could not use the ac control unit for heat and the radio remained unresponsive.

Today I tore back into the car and ripped out the wiring tree used for the device and reconnected everything back how it was supposed to be stock. I even put the AM/FM back in despite how miserably short they are just to say it was all back to how it was. Still, nothing is responding to how it should be even though the radio unit made noises when I reconnected all the proper clips.

What do you guys think it could be? What would you suggest I do? Would disconnecting the battery for a good 10 minutes to let the car reset help? I just wanted to do the $85 Bluetooth adapter over the $1400 apple unit at a shop but my God is this stupid.

Pre-facelift if that matters at all.

 

No offense but there is about a 99 percent chance this is an installation issue. Might want to higher a professional to go through it.

 

Email Henri at Help@sc430mods.com and tell him everything you've said here and see if there's a fix.

Maybe you got a defective one and they'll just send you a new one or it could be an installation issue as @Tanker mentioned.

There's plenty of us that have installed their Bluetooth Adapter with no issues.

As for your car not responding now, if you haven't already tried disconnecting battery, I would hold off until I got a response from Henri.

You can also post this on the fb page SC430Mods

Be sure to update this thread and let us know if and how things were resolved.

 

My guess is you spliced into the CANN network instead of a dedicated 12V line. The cann network is the car's computer network, which transmits data from module to module. The tricky part is it also has a current on it, so it can power the equipment you hook up to it. However, if you do that, it will mess up the network and keep things from working.

 

Okay, I'm not quite sure how I accomplished that if that's true. How would you suggest resolving that issue assuming it is it. And how would I verify that is it?

 

pretty easy, You need to google SC430 Radio harness pinout and see what each color wires does.

If you put everything back they way it was and you still have the problem, then it is not what I suggested (unless you blew something)

 

I actually did tear out the device and restore everything to factory and the problem persists. Do you believe it is fuse(s) then?

 

Did you search for a blown fuse?

If you don't have an owner's manual, you can use this website
https://fuse-box.info/lexus/lexus-sc...001-2010-fuses

 

I've used the the sc430 adapter on both ls430 and sc430. And works fine. The install itself is very simple. The hardest part was getting the climate control out without scratching the leather on the side. It's literally unplug OEM wiring, plug in and put everything back. Are you sure you didn't yank any of the OEM wiring to hard or stretch the connectors when you put everything back.

 

That kind of makes sense. The AC Control unit has like 4 plugs that go to it that control different aspects of it. If one of them is loose it would explain the partial functionality.

 

The AC control unit has 3 plugs not 4. Besides it's positioned above the radio unit well enough away from those plugs even when all disconnected. The only "tight" things you can pull on from what I've experienced is the AM/FM cables but they're meant to be disregarded when I have my own music anyhow. I don't myself yanking the important cables to a point of disfunction. Nothing looks frayed by the clips. I'm starting to wonder if it's fuse(s) I need to use a tester on and pluck and replace any that might need it. Maybe letting the car sit for 10 minutes with a disconnected battery to reset might do magic? The electrical problems the car is having is centralized to the 2 units and everything else if fine.

What I find funny is when I ripped out the adapter and put everything back to stock the radio receives power as you can hear it cycling but it's otherwise unresponsive to all buttons. And I can feel heat in my vents as the last setting I had my ac on was warmth before it stopped responding. So it "remembered" but it's not blowing or being responsive.

 

I just took a drive tonight to keep the battery charged and the fluids moving. The ac control unit is receiving power but otherwise will not respond. The radio unit is unresponsive. Someone said somewhere it could have went into anti-theft which okay makes sense, but why is the ac control unit doing what it is too? I don't understand how a Bluetooth installation is causing this much headache.

 

Were you not able to get ahold of Henri Higgins at help@sc430mods.com ?

They also have a Facebook page SC430Mods.com

That would be your best bet on helping you get this resolved — GO to the source.

NO, this install shouldn’t be causing this much headache as mentioned before — plenty of us have done the same install with ZERO issues.


PLEASE seek help from the makers / source.

 

I have emailed and he is as perplexed as we are. His assumption in the last email was a possible shortage somewhere.

 

Good luck.

Diagnosing electrical issues in automobiles is a challenge.

Probably stating the obvious, but check all the connectors to makes certain they are connected. Check all the pins of the connectors to make certain they are even. If one of the pins in a connector has moved out, then this could cause your issues.

Also check all your grounds carefully. Make certain all the bolts on grounding lugs are tight.