Retroplay

Sounds like there is some type of battery in the ECUs that have lost their ability to charge. Do both sides have this problem?

MadlyMad

Thank you, Harold57, tried that link. Doesn't go back to '95.

MadlyMad

Retroplay, I only a driver's side memory seat control in my '95 SC400.

Harold57

Are you sure that you clicked on the SC400? When I did that, it had all of them, the 1995 included. Try this link.

http://drivers.lexus.com/lexusdriver...1995&x=47&y=11

MadlyMad

I did print out the Electrical one, Harold57. It's the only one that looks relevant to my problem. I'll bring it to my guy and see if it helps. Thank you.
MadlyMad

My1998LS40

iTrader: (1)

I tried following the steps in page one but no success. Disconnected the battery for more than 5m, reconnected, turned ignition on, moved seat forward all the way (no beep), moved seat back forward all the way (no beep), moved seat backward, seat back backward, set memory (no beep). I think maybe the seat memory ECU is not working since nothing beeped as it should. Anyone has any suggestion? Thank you in advance.

ShawnOk

iTrader: (1)

You also have to be in PARK to set the seat memory. Just thought I'd mention that.

My1998LS40

iTrader: (1)

Of course I was in "Park" when doing that. What else could I be in when disconnecting, reconnecting the battery?

ShawnOk

iTrader: (1)

Sorry, didn't mean to state the obvious. Honestly, I wasn't considering anything with the battery connected/disconnected. I just threw something I've zoned out on before. I have tried to set the seat memory or adjust the mirror while parked momentary at a stop light and of course I won't get any confirmation beep. I thought that might be part of your issue. My b.

You can always remove the seat and check all the wire harnesses under it. Pretty quick and easy. I posted a DIY on the thread about changing the seat belt receivers to white LEDs.

Additionally, My1998LS40, I've connected and disconnected the battery in Neutral this past weekend. Allowed me to push the car forward and backward to move it around the garage while my seats where out of the car (to avoid airbag deployment).. Just making a point.

Coleroad

Shawn I've done that stop at a stop sign and try to use the presets. Have to pull off put it in park. Sometimes the simplest things are overlooked.

Bgw70

I believe I read a TSB that said this procedure only worked on the 2005 SC430 and newer.

My1998LS40

iTrader: (1)

You might be right. Looking back and all the people that confirmed it worked were for 2005 and up except one person with a 2001. The ones with 2002's never did confirm if it work for them, specially the OP.

ShawnOK: I'm sorry but I didn't mean anything harsh, just overlooked the situation and didn't consider special occasions. But, if the seats still are still moving as they should, I don't think it's a wiring problem. Not at least at the seats. I've been trying to move it all different ways to see if it would beep and it never did. Searched but didn't found any different solution. Maybe I'll check the ECU in the door when I pop it open to replace speakers.

dallas7500

i had installed a new battery....before this post, I was left to wonder in bewildered puzzlement as to what happened.

tmakogon

I found that driver seat memory buttons also respond when I have car in park, keys not inserted, and door open. Seat moves to pre-programmed positions once. It's an '05.

amitmunjal

HI


I have tried this (below option) on my 2012 model RX 450H-- Australia, as the Driver side seat memory button is dead (the passenger side works fine)

No beeps when I moved seat to the 4 extreme positions. I have also checked

3 fuses that power this circuit:- 1- 30A POWER fuse, 2-10A DOME fuse, 3- 15A ECU-IG fuse. All good.

I bought this off a dealer (in a different city), second owner, about a year ago and never bothered with this feature until now. Don't know if battery was disconnected or not, but also thinking if disconnection of battery will reset other features like power windows etc as read in some other forums)

Any advancements sine last post on how to fix this issue.

Regards
tim




---------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------