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texuslexus1

strange intermittent electrical problems

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I recently brought my car in to have the dashboard replaced under the Warranty Enhancement Notification and had the car battery replaced at the same time.

When I picked up my car, the moonroof would not open and neither the tilt nor power button would do anything, so I could not reset it myself.  The dome/map light would not come on manually or when a door was open.  These remain issues.

A little while later, the audio system started doing strange things intermittently including:

power off causes eject disk, then power off switches radio to FM, then power off ejects another CD; power off causes eject disk, I reload disk, then power off turns unit off; power off causes eject disk, hitting load turns off unit; power off causes eject, do not load a disk, unit shuts off by itself.  Otherwise it is hard to switch off the unit.  After a couple of weeks, this behavior mostly stopped.  Now the light which illuminates the radio display stays off most of the time, but sometimes it will come back on.

One of the dual function tail lights stopped working (it was off with the headlights on and came on when the car was in reverse - the dash indicator light came on indicating an issue) and then it started working again and the dash indicator light went off).
 
I plan to return the car to the dealer to see if they can figure out what is going on.  Could all this be related to just the battery being disconnected?  When I changed the battery myself on a 2005 RX330, nothing happened other than needing to reset the power windows.  When a dash is replaced, does any wiring harness behind it need to be unplugged?  If so, perhaps there is a poor connection when a harness was reconnected.

 

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There is a lot of wiring behind the dash, but if all these issues started after the dash replacement, then the dealership has to fix them because they did something to cause all these issues. It could be anything from a loose connector or damaged wiring to something as simple as doing a reset procedure of some sort. Also check the battery and alternator for any issues. Take the car back to them.

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