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LEXIE

Disconnecting Battery

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Are there any precautions in temporarily disconnecting my battery other than

negative cable first. Will I foul computer system up and if so how do I restore

previous settings after reconnecting.

'93 SC400

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Im no expect but becareful that you dont loose the radio code,not sure how long if the battery disconected before the radio code would need to be entered.

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You won't ruin the computer or anything, anything that actually requires work needs the battery replaced... You will loose your radio settings of course, but that is about it. And you might see a slight performace increase while the ECU relearns fuel curves and such. But it won't last long.

Long story short, you won't ruin anything... But if you have a stereo that needs a code after reset make sure you know it first, I am sure lexus charges an arm and a leg to look it up. (much like mitsubishi does)

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I am sure lexus charges an arm and a leg to look it up. (much like mitsubishi does)

to true,Lexus uk have told me that on my mk1,the radio code is useally part of the vin number of the car..

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Hook a battery charger or another 12v battery to your cables before you remove them, then you won't lose any of your settings. I've heard of people using a little 9v battery to do the same thing (preserve settings.)

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I think there are even little battery systems you can buy that plug right into your cigarette lighter and do the same thing of maintaining radio memory and all that business. I don't remember where I saw them though, sorry :unsure:

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Wouldn't that negate the whole idea of disconnecting the battery? Unless your replacing the battey of course...

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yeah, all that will happen is you wiil lose the radio station settings and you would just have to set your clock.

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thx for all the replys guys. the reason i asked the quest was because

i was going to replace the seals in my p/s unit and needed to disconnect

the bat.

regarding the p/s job, although it took me yesterday and today, all went

well and because of all the info here and on other sites there were no

big supprises. of course the infamous two back bolts were the biggest

deal. i was able to remove the pump under the hood but when replacing,

i couldn't keep the lower back bolt from falling out before i could get it

started (threaded) so i fianlly had to jack the car up and go in from

underneath.

i also thoroughly cleaned the reservoir out and a quite a bit of s**t

came out. after installing the rebuilt pump i purged all the old fluid out and now i am in the process of deaerating the new fliud in the system. the pump is getting smoother with each cycle of starting and rotating the wheels to complete stop, left and right.

i hope all holds up...it feels good to save some $800 bucks after all is

done.

thx again to all for the many questions that were answered.

lexie.

ps... the solo drive belt removal and replacement was a snap as one of

the previous posts stated it would be.

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