2. Center Navagation/ radio screen restarts after vehicle is OFF. Sometimes the screen will illuminate immediately after vehicle shut off. At times panel will restart itself minutes later. Requires vehicle restart and shut off to turn off screen. This may happen occasionally or 8-10 times in a row. If screen runs, result is a dead battery. Doors can not lock if screen is running. If the car is locked and screen starts itself, car can only be opened manually as the fob can not unlock vehicle. Battery is a new 7 year battery OEM. No error codes are present when scanned. Mileage ~ 30,000
I would clean the throttle body with the special spray they sell and try that.
SOURCE: my radio requires a code and i completely forgot!.. :(
Contact the dealer and they will give you the code over the phone. FREE!!
SOURCE: new battery died after replaced bcuz car wouldnt start thought it was the starter
maybe its da alternator,i had that same problem with my ls400,new battery kept dying,i had 2 get it chargered like three times within one day,it was my alternator gone bad.
SOURCE: i have a 1992 lexus sc300 that start up fine and
yes mine is doing the same , and it is the main relay, my sisters honda did the same thing and it was the main relay!
SOURCE: 1992 LEXUS LS400 STALLS WHEN HOT & IDLE SURGING
Had same problem on 93 LS400, timing was off one tooth on left camshaft gear. Replaced belt and reset and no more problems. (Spent 1200.00 on repairs I did'nt need)
SOURCE: 1990 lexus ls 400 security system went off now
Okay you may want to check to see if the sensor on door lock cylinder hasn't fallen off from the lock itself. Pull of the door panels and check the wires at the door lock cylinder. Hope this helps.
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