Interesting background info.

In Europe the Nav's are named after the year they launched. See http://www.lexus-mapupdates.eu/Shop/Index. Could be different over there.

So; Gen 00, Gen 01, Gen 03, Gen 05 & Gen 08 (the "Hard Disk Drive" & "Lexus CD" are also mentioned on that site). No "Gen 2".

 

That is interesting, however the version here in the states is a generation 2/3, so maybe the 2 was just dropped over there.

 

The fix for the steering wheel volume controls worked great. Thanks so much!

 

You're freaking awesome! I performed these steps on a 2004 LS 430 with navigation and worked beautifully.

 

This fix saved my life this morning

Thank you!

 

Worked like a charm! Thanks!

 

That leads to an obvious question. I updated my 02 to Gen 4 nav. Will it work if I have the problem in the future?

 

This remedy worked for me. I greatly appreciate your help!!
Thank you!

 

Does anybody know how to install a steering wheel control pad.

 

On my 02 sc430, if I hold the steering up/down volue arrows, it eventually goes blasting at absolutely full volume. This scared the crap our of us. Is it just my system or have others had this ridiculously bad design, which could blow the whole system up as well!!!!!!!!!!!!!!

 

Well there are two ways this could happen. First, you can set a memory point on one of the control buttons by getting the volume at the level you desire as a "saved" point by holding down that memory button. That way, if a phone call comes in on your phone or some other reason like chatting with a passenger, you press this button and it returns the volume to that set level quickly. If you mean that you're pressing this button and the volume jumps up too loud, then it's "saved" at a very high point. Second thing, could be a failing ML amp. I've heard that this random jump in volume occurs when the amp starts to fail. Usually the first sign. Check the first thing out, and report back and let us know what you find out.

 

Thanks for all the replies...this isn't a case of the steering wheel vol up/down not working..it seems if you don't set a 'preset' point for your "comfort zone" and just hold the volume til it nears minium, it comes back like a strike of ACDC blasting you in first row at the tower of speakers at Donnington or something...its like a volume wheel that doesn't have a stop point, it just goes from min to total insane, and not in a good way (anyone wanna trade a Tesla?).
I have ignored out of fear, those vol. pulls for years since it blasted me near out of the car. If I could, I"d probably pull it off, or makte it a control for HID lighting. No one should have designed a set of vol up down ***** that can suddenly to PEAKK RMS....it's a great way for them to sell you a new stereo system!
The point is, I had the "wood down" on the radio and cig light. areas, and my kid was trying to talk to me so I just thumbed it for maybe 2 secs and oh god...I don't know if she'll ever go in m car again...it was actually louder than our screams, so she goes "Whatfg..now our neighbors will have a new set of comlaints about our cars"! The top was down, too!\
I'd really like to have more donfidence about this unit before trying to perform a TSB....anyone have an 02?
It could be a good cardiac stress test...great way to be sold a new ticker with a LS400 and such!

 

best comparable scene in movie Back To THe Future is when Marty barely plays 1 note through Do's 8' diameter speakered amp system, and then the doc rings, unaware of the speakers smithereens..."Marty, I think you're gonna have to lay off the guitar amplifier, there's an inistability tin the system that could cause an overload.
Gee, thanks Doc" (Lexus?)....

 

I have an '04 LS430 and this worked perfectly. Much thanks.

 

Could this possibly solve the problems many experience with the gain control after installing BeatSonic? Just a thought. Might link it to a Beatsonic thread.