LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

sat nav radio not working blank screen

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Old 03-24-16, 06:28 AM
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shoney
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Default sat nav radio not working blank screen

so carnt see to push climate controls but the other buttons displays all fine can use the fan heater controls on dash

car had flat battery so jump start everything else fine so ..................
Old 03-24-16, 01:28 PM
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shoney
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or should i not jump these ?

Last edited by shoney; 03-24-16 at 08:45 PM.
Old 03-24-16, 08:47 PM
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shoney
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Default blank screen after jump start?????????

any ideas why??? oh and no radio
Old 03-25-16, 05:46 PM
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Yamae
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I don't know your problem is caused by the jump start but it often causes a problem to electronics circuits. because it generates a surge pulse which reaches more than 100V. This has been discussed many times on the forum and you also can find articles about it searching the Net.
For examples:
https://www.yourmechanic.com/questio...fter-jumpstart
http://www.mynrma.com.au/get-involve...modern-car.htm

Toyota/Lexus uses many surge absorbers called ZNR at circuits to prevent the damage caused by the surge but sometimes those ZNRs can't fully absorb the surge well enough depending on the waveform. Sometimes fuses are only open. So check fuses first.

If fuses are all OK, try resetting computers by the power disconnection. If still you can't fix the problem, you need to repair the damaged unit in a worst scenario. I have had some experience fixing those damaged units replacing regulators, resistors, diodes and others.
Old 03-26-16, 01:09 PM
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billydpowe
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shoney WHY are you still fooling around with this car... (quote omitted)
I said "get professional help"
electronics are different.. easy to mess up.

Last edited by billydpowe; 03-27-16 at 09:19 AM.
Old 03-27-16, 09:23 AM
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billydpowe
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send it to Yamae
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